---
_id: '15204'
abstract:
- lang: eng
  text: Using observations of X-ray pulsar Hercules X-1 by the Imaging X-ray Polarimetry
    Explorer we report a highly significant (>17σ) detection of the polarization signal
    from an accreting neutron star. The observed degree of linear polarization of
    ~10% is far below theoretical expectations for this object, and stays low throughout
    the spin cycle of the pulsar. Both the degree and angle of polarization exhibit
    variability with the pulse phase, allowing us to measure the pulsar spin position
    angle 57(2) deg and the magnetic obliquity 12(4) deg, which is an essential step
    towards detailed modelling of the intrinsic emission of X-ray pulsars. Combining
    our results with the optical polarimetric data, we find that the spin axis of
    the neutron star and the angular momentum of the binary orbit are misaligned by
    at least ~20 deg, which is a strong argument in support of the models explaining
    the stability of the observed superorbital variability with the precession of
    the neutron star.
article_processing_charge: No
article_type: original
arxiv: 1
author:
- first_name: Victor
  full_name: Doroshenko, Victor
  last_name: Doroshenko
- first_name: Juri
  full_name: Poutanen, Juri
  last_name: Poutanen
- first_name: Sergey S.
  full_name: Tsygankov, Sergey S.
  last_name: Tsygankov
- first_name: Valery F.
  full_name: Suleimanov, Valery F.
  last_name: Suleimanov
- first_name: Matteo
  full_name: Bachetti, Matteo
  last_name: Bachetti
- first_name: Ilaria
  full_name: Caiazzo, Ilaria
  id: 8ae5b6e7-2a03-11ee-914d-b58ed7a3b47d
  last_name: Caiazzo
  orcid: 0000-0002-4770-5388
- first_name: Enrico
  full_name: Costa, Enrico
  last_name: Costa
- first_name: Alessandro
  full_name: Di Marco, Alessandro
  last_name: Di Marco
- first_name: Jeremy
  full_name: Heyl, Jeremy
  last_name: Heyl
- first_name: Fabio
  full_name: La Monaca, Fabio
  last_name: La Monaca
- first_name: Fabio
  full_name: Muleri, Fabio
  last_name: Muleri
- first_name: Alexander A.
  full_name: Mushtukov, Alexander A.
  last_name: Mushtukov
- first_name: George G.
  full_name: Pavlov, George G.
  last_name: Pavlov
- first_name: Brian D.
  full_name: Ramsey, Brian D.
  last_name: Ramsey
- first_name: John
  full_name: Rankin, John
  last_name: Rankin
- first_name: Andrea
  full_name: Santangelo, Andrea
  last_name: Santangelo
- first_name: Paolo
  full_name: Soffitta, Paolo
  last_name: Soffitta
- first_name: Rüdiger
  full_name: Staubert, Rüdiger
  last_name: Staubert
- first_name: Martin C.
  full_name: Weisskopf, Martin C.
  last_name: Weisskopf
- first_name: Silvia
  full_name: Zane, Silvia
  last_name: Zane
- first_name: Iván
  full_name: Agudo, Iván
  last_name: Agudo
- first_name: Lucio A.
  full_name: Antonelli, Lucio A.
  last_name: Antonelli
- first_name: Luca
  full_name: Baldini, Luca
  last_name: Baldini
- first_name: Wayne H.
  full_name: Baumgartner, Wayne H.
  last_name: Baumgartner
- first_name: Ronaldo
  full_name: Bellazzini, Ronaldo
  last_name: Bellazzini
- first_name: Stefano
  full_name: Bianchi, Stefano
  last_name: Bianchi
- first_name: Stephen D.
  full_name: Bongiorno, Stephen D.
  last_name: Bongiorno
- first_name: Raffaella
  full_name: Bonino, Raffaella
  last_name: Bonino
- first_name: Alessandro
  full_name: Brez, Alessandro
  last_name: Brez
- first_name: Niccolò
  full_name: Bucciantini, Niccolò
  last_name: Bucciantini
- first_name: Fiamma
  full_name: Capitanio, Fiamma
  last_name: Capitanio
- first_name: Simone
  full_name: Castellano, Simone
  last_name: Castellano
- first_name: Elisabetta
  full_name: Cavazzuti, Elisabetta
  last_name: Cavazzuti
- first_name: Stefano
  full_name: Ciprini, Stefano
  last_name: Ciprini
- first_name: Alessandra
  full_name: De Rosa, Alessandra
  last_name: De Rosa
- first_name: Ettore
  full_name: Del Monte, Ettore
  last_name: Del Monte
- first_name: Laura
  full_name: Di Gesu, Laura
  last_name: Di Gesu
- first_name: Niccolò
  full_name: Di Lalla, Niccolò
  last_name: Di Lalla
- first_name: Immacolata
  full_name: Donnarumma, Immacolata
  last_name: Donnarumma
- first_name: Michal
  full_name: Dovčiak, Michal
  last_name: Dovčiak
- first_name: Steven R.
  full_name: Ehlert, Steven R.
  last_name: Ehlert
- first_name: Teruaki
  full_name: Enoto, Teruaki
  last_name: Enoto
- first_name: Yuri
  full_name: Evangelista, Yuri
  last_name: Evangelista
- first_name: Sergio
  full_name: Fabiani, Sergio
  last_name: Fabiani
- first_name: Riccardo
  full_name: Ferrazzoli, Riccardo
  last_name: Ferrazzoli
- first_name: Javier A.
  full_name: Garcia, Javier A.
  last_name: Garcia
- first_name: Shuichi
  full_name: Gunji, Shuichi
  last_name: Gunji
- first_name: Kiyoshi
  full_name: Hayashida, Kiyoshi
  last_name: Hayashida
- first_name: Wataru
  full_name: Iwakiri, Wataru
  last_name: Iwakiri
- first_name: Svetlana G.
  full_name: Jorstad, Svetlana G.
  last_name: Jorstad
- first_name: Vladimir
  full_name: Karas, Vladimir
  last_name: Karas
- first_name: Takao
  full_name: Kitaguchi, Takao
  last_name: Kitaguchi
- first_name: Jeffery J.
  full_name: Kolodziejczak, Jeffery J.
  last_name: Kolodziejczak
- first_name: Henric
  full_name: Krawczynski, Henric
  last_name: Krawczynski
- first_name: Luca
  full_name: Latronico, Luca
  last_name: Latronico
- first_name: Ioannis
  full_name: Liodakis, Ioannis
  last_name: Liodakis
- first_name: Simone
  full_name: Maldera, Simone
  last_name: Maldera
- first_name: Alberto
  full_name: Manfreda, Alberto
  last_name: Manfreda
- first_name: Frédéric
  full_name: Marin, Frédéric
  last_name: Marin
- first_name: Andrea
  full_name: Marinucci, Andrea
  last_name: Marinucci
- first_name: Alan P.
  full_name: Marscher, Alan P.
  last_name: Marscher
- first_name: Herman L.
  full_name: Marshall, Herman L.
  last_name: Marshall
- first_name: Giorgio
  full_name: Matt, Giorgio
  last_name: Matt
- first_name: Ikuyuki
  full_name: Mitsuishi, Ikuyuki
  last_name: Mitsuishi
- first_name: Tsunefumi
  full_name: Mizuno, Tsunefumi
  last_name: Mizuno
- first_name: Chi-Yung
  full_name: Ng, Chi-Yung
  last_name: Ng
- first_name: Stephen L.
  full_name: O’Dell, Stephen L.
  last_name: O’Dell
- first_name: Nicola
  full_name: Omodei, Nicola
  last_name: Omodei
- first_name: Chiara
  full_name: Oppedisano, Chiara
  last_name: Oppedisano
- first_name: Alessandro
  full_name: Papitto, Alessandro
  last_name: Papitto
- first_name: Abel L.
  full_name: Peirson, Abel L.
  last_name: Peirson
- first_name: Matteo
  full_name: Perri, Matteo
  last_name: Perri
- first_name: Melissa
  full_name: Pesce-Rollins, Melissa
  last_name: Pesce-Rollins
- first_name: Maura
  full_name: Pilia, Maura
  last_name: Pilia
- first_name: Andrea
  full_name: Possenti, Andrea
  last_name: Possenti
- first_name: Simonetta
  full_name: Puccetti, Simonetta
  last_name: Puccetti
- first_name: Ajay
  full_name: Ratheesh, Ajay
  last_name: Ratheesh
- first_name: Roger W.
  full_name: Romani, Roger W.
  last_name: Romani
- first_name: Carmelo
  full_name: Sgrò, Carmelo
  last_name: Sgrò
- first_name: Patrick
  full_name: Slane, Patrick
  last_name: Slane
- first_name: Gloria
  full_name: Spandre, Gloria
  last_name: Spandre
- first_name: Rashid A.
  full_name: Sunyaev, Rashid A.
  last_name: Sunyaev
- first_name: Toru
  full_name: Tamagawa, Toru
  last_name: Tamagawa
- first_name: Fabrizio
  full_name: Tavecchio, Fabrizio
  last_name: Tavecchio
- first_name: Roberto
  full_name: Taverna, Roberto
  last_name: Taverna
- first_name: Yuzuru
  full_name: Tawara, Yuzuru
  last_name: Tawara
- first_name: Allyn F.
  full_name: Tennant, Allyn F.
  last_name: Tennant
- first_name: Nicolas E.
  full_name: Thomas, Nicolas E.
  last_name: Thomas
- first_name: Francesco
  full_name: Tombesi, Francesco
  last_name: Tombesi
- first_name: Alessio
  full_name: Trois, Alessio
  last_name: Trois
- first_name: Roberto
  full_name: Turolla, Roberto
  last_name: Turolla
- first_name: Jacco
  full_name: Vink, Jacco
  last_name: Vink
- first_name: Kinwah
  full_name: Wu, Kinwah
  last_name: Wu
- first_name: Fei
  full_name: Xie, Fei
  last_name: Xie
citation:
  ama: Doroshenko V, Poutanen J, Tsygankov SS, et al. Determination of X-ray pulsar
    geometry with IXPE polarimetry. <i>Nature Astronomy</i>. 2022;6(12):1433-1443.
    doi:<a href="https://doi.org/10.1038/s41550-022-01799-5">10.1038/s41550-022-01799-5</a>
  apa: Doroshenko, V., Poutanen, J., Tsygankov, S. S., Suleimanov, V. F., Bachetti,
    M., Caiazzo, I., … Xie, F. (2022). Determination of X-ray pulsar geometry with
    IXPE polarimetry. <i>Nature Astronomy</i>. Springer Nature. <a href="https://doi.org/10.1038/s41550-022-01799-5">https://doi.org/10.1038/s41550-022-01799-5</a>
  chicago: Doroshenko, Victor, Juri Poutanen, Sergey S. Tsygankov, Valery F. Suleimanov,
    Matteo Bachetti, Ilaria Caiazzo, Enrico Costa, et al. “Determination of X-Ray
    Pulsar Geometry with IXPE Polarimetry.” <i>Nature Astronomy</i>. Springer Nature,
    2022. <a href="https://doi.org/10.1038/s41550-022-01799-5">https://doi.org/10.1038/s41550-022-01799-5</a>.
  ieee: V. Doroshenko <i>et al.</i>, “Determination of X-ray pulsar geometry with
    IXPE polarimetry,” <i>Nature Astronomy</i>, vol. 6, no. 12. Springer Nature, pp.
    1433–1443, 2022.
  ista: Doroshenko V, Poutanen J, Tsygankov SS, Suleimanov VF, Bachetti M, Caiazzo
    I, Costa E, Di Marco A, Heyl J, La Monaca F, Muleri F, Mushtukov AA, Pavlov GG,
    Ramsey BD, Rankin J, Santangelo A, Soffitta P, Staubert R, Weisskopf MC, Zane
    S, Agudo I, Antonelli LA, Baldini L, Baumgartner WH, Bellazzini R, Bianchi S,
    Bongiorno SD, Bonino R, Brez A, Bucciantini N, Capitanio F, Castellano S, Cavazzuti
    E, Ciprini S, De Rosa A, Del Monte E, Di Gesu L, Di Lalla N, Donnarumma I, Dovčiak
    M, Ehlert SR, Enoto T, Evangelista Y, Fabiani S, Ferrazzoli R, Garcia JA, Gunji
    S, Hayashida K, Iwakiri W, Jorstad SG, Karas V, Kitaguchi T, Kolodziejczak JJ,
    Krawczynski H, Latronico L, Liodakis I, Maldera S, Manfreda A, Marin F, Marinucci
    A, Marscher AP, Marshall HL, Matt G, Mitsuishi I, Mizuno T, Ng C-Y, O’Dell SL,
    Omodei N, Oppedisano C, Papitto A, Peirson AL, Perri M, Pesce-Rollins M, Pilia
    M, Possenti A, Puccetti S, Ratheesh A, Romani RW, Sgrò C, Slane P, Spandre G,
    Sunyaev RA, Tamagawa T, Tavecchio F, Taverna R, Tawara Y, Tennant AF, Thomas NE,
    Tombesi F, Trois A, Turolla R, Vink J, Wu K, Xie F. 2022. Determination of X-ray
    pulsar geometry with IXPE polarimetry. Nature Astronomy. 6(12), 1433–1443.
  mla: Doroshenko, Victor, et al. “Determination of X-Ray Pulsar Geometry with IXPE
    Polarimetry.” <i>Nature Astronomy</i>, vol. 6, no. 12, Springer Nature, 2022,
    pp. 1433–43, doi:<a href="https://doi.org/10.1038/s41550-022-01799-5">10.1038/s41550-022-01799-5</a>.
  short: V. Doroshenko, J. Poutanen, S.S. Tsygankov, V.F. Suleimanov, M. Bachetti,
    I. Caiazzo, E. Costa, A. Di Marco, J. Heyl, F. La Monaca, F. Muleri, A.A. Mushtukov,
    G.G. Pavlov, B.D. Ramsey, J. Rankin, A. Santangelo, P. Soffitta, R. Staubert,
    M.C. Weisskopf, S. Zane, I. Agudo, L.A. Antonelli, L. Baldini, W.H. Baumgartner,
    R. Bellazzini, S. Bianchi, S.D. Bongiorno, R. Bonino, A. Brez, N. Bucciantini,
    F. Capitanio, S. Castellano, E. Cavazzuti, S. Ciprini, A. De Rosa, E. Del Monte,
    L. Di Gesu, N. Di Lalla, I. Donnarumma, M. Dovčiak, S.R. Ehlert, T. Enoto, Y.
    Evangelista, S. Fabiani, R. Ferrazzoli, J.A. Garcia, S. Gunji, K. Hayashida, W.
    Iwakiri, S.G. Jorstad, V. Karas, T. Kitaguchi, J.J. Kolodziejczak, H. Krawczynski,
    L. Latronico, I. Liodakis, S. Maldera, A. Manfreda, F. Marin, A. Marinucci, A.P.
    Marscher, H.L. Marshall, G. Matt, I. Mitsuishi, T. Mizuno, C.-Y. Ng, S.L. O’Dell,
    N. Omodei, C. Oppedisano, A. Papitto, A.L. Peirson, M. Perri, M. Pesce-Rollins,
    M. Pilia, A. Possenti, S. Puccetti, A. Ratheesh, R.W. Romani, C. Sgrò, P. Slane,
    G. Spandre, R.A. Sunyaev, T. Tamagawa, F. Tavecchio, R. Taverna, Y. Tawara, A.F.
    Tennant, N.E. Thomas, F. Tombesi, A. Trois, R. Turolla, J. Vink, K. Wu, F. Xie,
    Nature Astronomy 6 (2022) 1433–1443.
date_created: 2024-03-26T09:51:04Z
date_published: 2022-10-22T00:00:00Z
date_updated: 2024-04-02T07:16:54Z
day: '22'
doi: 10.1038/s41550-022-01799-5
extern: '1'
external_id:
  arxiv:
  - '2206.07138'
fulldoi: https://doi.org/10.1038/s41550-022-01799-5
intvolume: '         6'
issue: '12'
keyword:
- Astronomy and Astrophysics
language:
- iso: eng
main_file_link:
- open_access: '1'
  url: https://arxiv.org/abs/2206.07138
month: '10'
oa: 1
oa_version: Preprint
page: 1433-1443
publication: Nature Astronomy
publication_identifier:
  issn:
  - 2397-3366
publication_status: published
publisher: Springer Nature
quality_controlled: '1'
scopus_import: '1'
status: public
title: Determination of X-ray pulsar geometry with IXPE polarimetry
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 6
year: '2022'
...
---
_id: '15205'
abstract:
- lang: eng
  text: 'Magnetars are neutron stars with ultrastrong magnetic fields, which can be
    observed in x-rays. Polarization measurements could provide information on their
    magnetic fields and surface properties. We observed polarized x-rays from the
    magnetar 4U 0142+61 using the Imaging X-ray Polarimetry Explorer and found a linear
    polarization degree of 13.5 ± 0.8% averaged over the 2– to 8–kilo–electron volt
    band. The polarization changes with energy: The degree is 15.0 ± 1.0% at 2 to
    4 kilo–electron volts, drops below the instrumental sensitivity ~4 to 5 kilo–electron
    volts, and rises to 35.2 ± 7.1% at 5.5 to 8 kilo–electron volts. The polarization
    angle also changes by 90° at ~4 to 5 kilo–electron volts. These results are consistent
    with a model in which thermal radiation from the magnetar surface is reprocessed
    by scattering off charged particles in the magnetosphere.'
article_processing_charge: No
article_type: original
arxiv: 1
author:
- first_name: Roberto
  full_name: Taverna, Roberto
  last_name: Taverna
- first_name: Roberto
  full_name: Turolla, Roberto
  last_name: Turolla
- first_name: Fabio
  full_name: Muleri, Fabio
  last_name: Muleri
- first_name: Jeremy
  full_name: Heyl, Jeremy
  last_name: Heyl
- first_name: Silvia
  full_name: Zane, Silvia
  last_name: Zane
- first_name: Luca
  full_name: Baldini, Luca
  last_name: Baldini
- first_name: Denis
  full_name: González-Caniulef, Denis
  last_name: González-Caniulef
- first_name: Matteo
  full_name: Bachetti, Matteo
  last_name: Bachetti
- first_name: John
  full_name: Rankin, John
  last_name: Rankin
- first_name: Ilaria
  full_name: Caiazzo, Ilaria
  id: 8ae5b6e7-2a03-11ee-914d-b58ed7a3b47d
  last_name: Caiazzo
  orcid: 0000-0002-4770-5388
- first_name: Niccolò
  full_name: Di Lalla, Niccolò
  last_name: Di Lalla
- first_name: Victor
  full_name: Doroshenko, Victor
  last_name: Doroshenko
- first_name: Manel
  full_name: Errando, Manel
  last_name: Errando
- first_name: Ephraim
  full_name: Gau, Ephraim
  last_name: Gau
- first_name: Demet
  full_name: Kırmızıbayrak, Demet
  last_name: Kırmızıbayrak
- first_name: Henric
  full_name: Krawczynski, Henric
  last_name: Krawczynski
- first_name: Michela
  full_name: Negro, Michela
  last_name: Negro
- first_name: Mason
  full_name: Ng, Mason
  last_name: Ng
- first_name: Nicola
  full_name: Omodei, Nicola
  last_name: Omodei
- first_name: Andrea
  full_name: Possenti, Andrea
  last_name: Possenti
- first_name: Toru
  full_name: Tamagawa, Toru
  last_name: Tamagawa
- first_name: Keisuke
  full_name: Uchiyama, Keisuke
  last_name: Uchiyama
- first_name: Martin C.
  full_name: Weisskopf, Martin C.
  last_name: Weisskopf
- first_name: Ivan
  full_name: Agudo, Ivan
  last_name: Agudo
- first_name: Lucio A.
  full_name: Antonelli, Lucio A.
  last_name: Antonelli
- first_name: Wayne H.
  full_name: Baumgartner, Wayne H.
  last_name: Baumgartner
- first_name: Ronaldo
  full_name: Bellazzini, Ronaldo
  last_name: Bellazzini
- first_name: Stefano
  full_name: Bianchi, Stefano
  last_name: Bianchi
- first_name: Stephen D.
  full_name: Bongiorno, Stephen D.
  last_name: Bongiorno
- first_name: Raffaella
  full_name: Bonino, Raffaella
  last_name: Bonino
- first_name: Alessandro
  full_name: Brez, Alessandro
  last_name: Brez
- first_name: Niccolò
  full_name: Bucciantini, Niccolò
  last_name: Bucciantini
- first_name: Fiamma
  full_name: Capitanio, Fiamma
  last_name: Capitanio
- first_name: Simone
  full_name: Castellano, Simone
  last_name: Castellano
- first_name: Elisabetta
  full_name: Cavazzuti, Elisabetta
  last_name: Cavazzuti
- first_name: Stefano
  full_name: Ciprini, Stefano
  last_name: Ciprini
- first_name: Enrico
  full_name: Costa, Enrico
  last_name: Costa
- first_name: Alessandra
  full_name: De Rosa, Alessandra
  last_name: De Rosa
- first_name: Ettore
  full_name: Del Monte, Ettore
  last_name: Del Monte
- first_name: Laura
  full_name: Di Gesu, Laura
  last_name: Di Gesu
- first_name: Alessandro
  full_name: Di Marco, Alessandro
  last_name: Di Marco
- first_name: Immacolata
  full_name: Donnarumma, Immacolata
  last_name: Donnarumma
- first_name: Michal
  full_name: Dovčiak, Michal
  last_name: Dovčiak
- first_name: Steven R.
  full_name: Ehlert, Steven R.
  last_name: Ehlert
- first_name: Teruaki
  full_name: Enoto, Teruaki
  last_name: Enoto
- first_name: Yuri
  full_name: Evangelista, Yuri
  last_name: Evangelista
- first_name: Sergio
  full_name: Fabiani, Sergio
  last_name: Fabiani
- first_name: Riccardo
  full_name: Ferrazzoli, Riccardo
  last_name: Ferrazzoli
- first_name: Javier A.
  full_name: Garcia, Javier A.
  last_name: Garcia
- first_name: Shuichi
  full_name: Gunji, Shuichi
  last_name: Gunji
- first_name: Kiyoshi
  full_name: Hayashida, Kiyoshi
  last_name: Hayashida
- first_name: Wataru
  full_name: Iwakiri, Wataru
  last_name: Iwakiri
- first_name: Svetlana G.
  full_name: Jorstad, Svetlana G.
  last_name: Jorstad
- first_name: Vladimir
  full_name: Karas, Vladimir
  last_name: Karas
- first_name: Takao
  full_name: Kitaguchi, Takao
  last_name: Kitaguchi
- first_name: Jeffery J.
  full_name: Kolodziejczak, Jeffery J.
  last_name: Kolodziejczak
- first_name: Fabio
  full_name: La Monaca, Fabio
  last_name: La Monaca
- first_name: Luca
  full_name: Latronico, Luca
  last_name: Latronico
- first_name: Ioannis
  full_name: Liodakis, Ioannis
  last_name: Liodakis
- first_name: Simone
  full_name: Maldera, Simone
  last_name: Maldera
- first_name: Alberto
  full_name: Manfreda, Alberto
  last_name: Manfreda
- first_name: Frédéric
  full_name: Marin, Frédéric
  last_name: Marin
- first_name: Andrea
  full_name: Marinucci, Andrea
  last_name: Marinucci
- first_name: Alan P.
  full_name: Marscher, Alan P.
  last_name: Marscher
- first_name: Herman L.
  full_name: Marshall, Herman L.
  last_name: Marshall
- first_name: Giorgio
  full_name: Matt, Giorgio
  last_name: Matt
- first_name: Ikuyuki
  full_name: Mitsuishi, Ikuyuki
  last_name: Mitsuishi
- first_name: Tsunefumi
  full_name: Mizuno, Tsunefumi
  last_name: Mizuno
- first_name: Stephen C.-Y.
  full_name: Ng, Stephen C.-Y.
  last_name: Ng
- first_name: Stephen L.
  full_name: O’Dell, Stephen L.
  last_name: O’Dell
- first_name: Chiara
  full_name: Oppedisano, Chiara
  last_name: Oppedisano
- first_name: Alessandro
  full_name: Papitto, Alessandro
  last_name: Papitto
- first_name: George G.
  full_name: Pavlov, George G.
  last_name: Pavlov
- first_name: Abel L.
  full_name: Peirson, Abel L.
  last_name: Peirson
- first_name: Matteo
  full_name: Perri, Matteo
  last_name: Perri
- first_name: Melissa
  full_name: Pesce-Rollins, Melissa
  last_name: Pesce-Rollins
- first_name: Maura
  full_name: Pilia, Maura
  last_name: Pilia
- first_name: Juri
  full_name: Poutanen, Juri
  last_name: Poutanen
- first_name: Simonetta
  full_name: Puccetti, Simonetta
  last_name: Puccetti
- first_name: Brian D.
  full_name: Ramsey, Brian D.
  last_name: Ramsey
- first_name: Ajay
  full_name: Ratheesh, Ajay
  last_name: Ratheesh
- first_name: Roger W.
  full_name: Romani, Roger W.
  last_name: Romani
- first_name: Carmelo
  full_name: Sgrò, Carmelo
  last_name: Sgrò
- first_name: Patrick
  full_name: Slane, Patrick
  last_name: Slane
- first_name: Paolo
  full_name: Soffitta, Paolo
  last_name: Soffitta
- first_name: Gloria
  full_name: Spandre, Gloria
  last_name: Spandre
- first_name: Fabrizio
  full_name: Tavecchio, Fabrizio
  last_name: Tavecchio
- first_name: Yuzuru
  full_name: Tawara, Yuzuru
  last_name: Tawara
- first_name: Allyn F.
  full_name: Tennant, Allyn F.
  last_name: Tennant
- first_name: Nicholas E.
  full_name: Thomas, Nicholas E.
  last_name: Thomas
- first_name: Francesco
  full_name: Tombesi, Francesco
  last_name: Tombesi
- first_name: Alessio
  full_name: Trois, Alessio
  last_name: Trois
- first_name: Sergey S.
  full_name: Tsygankov, Sergey S.
  last_name: Tsygankov
- first_name: Jacco
  full_name: Vink, Jacco
  last_name: Vink
- first_name: Kinwah
  full_name: Wu, Kinwah
  last_name: Wu
- first_name: Fei
  full_name: Xie, Fei
  last_name: Xie
citation:
  ama: Taverna R, Turolla R, Muleri F, et al. Polarized x-rays from a magnetar. <i>Science</i>.
    2022;378(6620):646-650. doi:<a href="https://doi.org/10.1126/science.add0080">10.1126/science.add0080</a>
  apa: Taverna, R., Turolla, R., Muleri, F., Heyl, J., Zane, S., Baldini, L., … Xie,
    F. (2022). Polarized x-rays from a magnetar. <i>Science</i>. American Association
    for the Advancement of Science. <a href="https://doi.org/10.1126/science.add0080">https://doi.org/10.1126/science.add0080</a>
  chicago: Taverna, Roberto, Roberto Turolla, Fabio Muleri, Jeremy Heyl, Silvia Zane,
    Luca Baldini, Denis González-Caniulef, et al. “Polarized X-Rays from a Magnetar.”
    <i>Science</i>. American Association for the Advancement of Science, 2022. <a
    href="https://doi.org/10.1126/science.add0080">https://doi.org/10.1126/science.add0080</a>.
  ieee: R. Taverna <i>et al.</i>, “Polarized x-rays from a magnetar,” <i>Science</i>,
    vol. 378, no. 6620. American Association for the Advancement of Science, pp. 646–650,
    2022.
  ista: Taverna R, Turolla R, Muleri F, Heyl J, Zane S, Baldini L, González-Caniulef
    D, Bachetti M, Rankin J, Caiazzo I, Di Lalla N, Doroshenko V, Errando M, Gau E,
    Kırmızıbayrak D, Krawczynski H, Negro M, Ng M, Omodei N, Possenti A, Tamagawa
    T, Uchiyama K, Weisskopf MC, Agudo I, Antonelli LA, Baumgartner WH, Bellazzini
    R, Bianchi S, Bongiorno SD, Bonino R, Brez A, Bucciantini N, Capitanio F, Castellano
    S, Cavazzuti E, Ciprini S, Costa E, De Rosa A, Del Monte E, Di Gesu L, Di Marco
    A, Donnarumma I, Dovčiak M, Ehlert SR, Enoto T, Evangelista Y, Fabiani S, Ferrazzoli
    R, Garcia JA, Gunji S, Hayashida K, Iwakiri W, Jorstad SG, Karas V, Kitaguchi
    T, Kolodziejczak JJ, La Monaca F, Latronico L, Liodakis I, Maldera S, Manfreda
    A, Marin F, Marinucci A, Marscher AP, Marshall HL, Matt G, Mitsuishi I, Mizuno
    T, Ng SC-Y, O’Dell SL, Oppedisano C, Papitto A, Pavlov GG, Peirson AL, Perri M,
    Pesce-Rollins M, Pilia M, Poutanen J, Puccetti S, Ramsey BD, Ratheesh A, Romani
    RW, Sgrò C, Slane P, Soffitta P, Spandre G, Tavecchio F, Tawara Y, Tennant AF,
    Thomas NE, Tombesi F, Trois A, Tsygankov SS, Vink J, Wu K, Xie F. 2022. Polarized
    x-rays from a magnetar. Science. 378(6620), 646–650.
  mla: Taverna, Roberto, et al. “Polarized X-Rays from a Magnetar.” <i>Science</i>,
    vol. 378, no. 6620, American Association for the Advancement of Science, 2022,
    pp. 646–50, doi:<a href="https://doi.org/10.1126/science.add0080">10.1126/science.add0080</a>.
  short: R. Taverna, R. Turolla, F. Muleri, J. Heyl, S. Zane, L. Baldini, D. González-Caniulef,
    M. Bachetti, J. Rankin, I. Caiazzo, N. Di Lalla, V. Doroshenko, M. Errando, E.
    Gau, D. Kırmızıbayrak, H. Krawczynski, M. Negro, M. Ng, N. Omodei, A. Possenti,
    T. Tamagawa, K. Uchiyama, M.C. Weisskopf, I. Agudo, L.A. Antonelli, W.H. Baumgartner,
    R. Bellazzini, S. Bianchi, S.D. Bongiorno, R. Bonino, A. Brez, N. Bucciantini,
    F. Capitanio, S. Castellano, E. Cavazzuti, S. Ciprini, E. Costa, A. De Rosa, E.
    Del Monte, L. Di Gesu, A. Di Marco, I. Donnarumma, M. Dovčiak, S.R. Ehlert, T.
    Enoto, Y. Evangelista, S. Fabiani, R. Ferrazzoli, J.A. Garcia, S. Gunji, K. Hayashida,
    W. Iwakiri, S.G. Jorstad, V. Karas, T. Kitaguchi, J.J. Kolodziejczak, F. La Monaca,
    L. Latronico, I. Liodakis, S. Maldera, A. Manfreda, F. Marin, A. Marinucci, A.P.
    Marscher, H.L. Marshall, G. Matt, I. Mitsuishi, T. Mizuno, S.C.-Y. Ng, S.L. O’Dell,
    C. Oppedisano, A. Papitto, G.G. Pavlov, A.L. Peirson, M. Perri, M. Pesce-Rollins,
    M. Pilia, J. Poutanen, S. Puccetti, B.D. Ramsey, A. Ratheesh, R.W. Romani, C.
    Sgrò, P. Slane, P. Soffitta, G. Spandre, F. Tavecchio, Y. Tawara, A.F. Tennant,
    N.E. Thomas, F. Tombesi, A. Trois, S.S. Tsygankov, J. Vink, K. Wu, F. Xie, Science
    378 (2022) 646–650.
date_created: 2024-03-26T09:51:30Z
date_published: 2022-11-03T00:00:00Z
date_updated: 2024-04-02T07:17:25Z
day: '03'
doi: 10.1126/science.add0080
extern: '1'
external_id:
  arxiv:
  - '2205.08898'
fulldoi: https://doi.org/10.1126/science.add0080
intvolume: '       378'
issue: '6620'
keyword:
- Multidisciplinary
language:
- iso: eng
main_file_link:
- open_access: '1'
  url: https://arxiv.org/abs/2205.08898
month: '11'
oa: 1
oa_version: Preprint
page: 646-650
publication: Science
publication_identifier:
  eissn:
  - 1095-9203
  issn:
  - 0036-8075
publication_status: published
publisher: American Association for the Advancement of Science
quality_controlled: '1'
scopus_import: '1'
status: public
title: Polarized x-rays from a magnetar
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 378
year: '2022'
...
---
_id: '15206'
abstract:
- lang: eng
  text: We use the Relativistic Precession Model (RPM) and quasi-periodic oscillation
    (QPO) observations from the Rossi X-ray Timing Explorer to derive constraints
    on the properties of the black holes that power these sources and to test general
    relativity (GR) in the strong field regime. We build upon past techniques by using
    pairs of simultaneously measured QPOs, rather than triplets, and by including
    characteristic frequencies from the broad noise components of the power spectra
    in our fits. We find the inclusion of these broad noise components causes an overestimate
    in masses and underestimate in spins compared to values derived independently
    from optical spectra. We extend the underlying space-time metric to constrain
    potential deviations from the predictions of GR for astrophysical black holes.
    To do this, we modify the RPM model to a Kerr–Newman–deSitter space-time and model
    changes in the radial, ecliptic, and vertical frequencies. We compare our models
    with X-ray data of XTE J1550-564 and GRO J1655-40 using robust statistical techniques
    to constrain the parameters of the black holes and the deviations from GR. For
    both sources, using QPO and characteristic frequency data, we constrain particular
    deviations from GR to be less than one part per thousand.
article_processing_charge: No
article_type: original
arxiv: 1
author:
- first_name: Katherine
  full_name: Rink, Katherine
  last_name: Rink
- first_name: Ilaria
  full_name: Caiazzo, Ilaria
  id: 8ae5b6e7-2a03-11ee-914d-b58ed7a3b47d
  last_name: Caiazzo
  orcid: 0000-0002-4770-5388
- first_name: Jeremy
  full_name: Heyl, Jeremy
  last_name: Heyl
citation:
  ama: 'Rink K, Caiazzo I, Heyl J. Testing general relativity using quasi-periodic
    oscillations from X-ray black holes: XTE J1550-564 and GRO J1655-40. <i>Monthly
    Notices of the Royal Astronomical Society</i>. 2022;517(1):1389-1397. doi:<a href="https://doi.org/10.1093/mnras/stac2740">10.1093/mnras/stac2740</a>'
  apa: 'Rink, K., Caiazzo, I., &#38; Heyl, J. (2022). Testing general relativity using
    quasi-periodic oscillations from X-ray black holes: XTE J1550-564 and GRO J1655-40.
    <i>Monthly Notices of the Royal Astronomical Society</i>. Oxford University Press.
    <a href="https://doi.org/10.1093/mnras/stac2740">https://doi.org/10.1093/mnras/stac2740</a>'
  chicago: 'Rink, Katherine, Ilaria Caiazzo, and Jeremy Heyl. “Testing General Relativity
    Using Quasi-Periodic Oscillations from X-Ray Black Holes: XTE J1550-564 and GRO
    J1655-40.” <i>Monthly Notices of the Royal Astronomical Society</i>. Oxford University
    Press, 2022. <a href="https://doi.org/10.1093/mnras/stac2740">https://doi.org/10.1093/mnras/stac2740</a>.'
  ieee: 'K. Rink, I. Caiazzo, and J. Heyl, “Testing general relativity using quasi-periodic
    oscillations from X-ray black holes: XTE J1550-564 and GRO J1655-40,” <i>Monthly
    Notices of the Royal Astronomical Society</i>, vol. 517, no. 1. Oxford University
    Press, pp. 1389–1397, 2022.'
  ista: 'Rink K, Caiazzo I, Heyl J. 2022. Testing general relativity using quasi-periodic
    oscillations from X-ray black holes: XTE J1550-564 and GRO J1655-40. Monthly Notices
    of the Royal Astronomical Society. 517(1), 1389–1397.'
  mla: 'Rink, Katherine, et al. “Testing General Relativity Using Quasi-Periodic Oscillations
    from X-Ray Black Holes: XTE J1550-564 and GRO J1655-40.” <i>Monthly Notices of
    the Royal Astronomical Society</i>, vol. 517, no. 1, Oxford University Press,
    2022, pp. 1389–97, doi:<a href="https://doi.org/10.1093/mnras/stac2740">10.1093/mnras/stac2740</a>.'
  short: K. Rink, I. Caiazzo, J. Heyl, Monthly Notices of the Royal Astronomical Society
    517 (2022) 1389–1397.
date_created: 2024-03-26T09:51:55Z
date_published: 2022-09-28T00:00:00Z
date_updated: 2024-04-02T07:18:07Z
day: '28'
doi: 10.1093/mnras/stac2740
extern: '1'
external_id:
  arxiv:
  - '2107.06828'
fulldoi: https://doi.org/10.1093/mnras/stac2740
intvolume: '       517'
issue: '1'
keyword:
- Space and Planetary Science
- Astronomy and Astrophysics
language:
- iso: eng
main_file_link:
- open_access: '1'
  url: https://arxiv.org/abs/2107.06828
month: '09'
oa: 1
oa_version: Preprint
page: 1389-1397
publication: Monthly Notices of the Royal Astronomical Society
publication_identifier:
  eissn:
  - 1365-2966
  issn:
  - 0035-8711
publication_status: published
publisher: Oxford University Press
quality_controlled: '1'
scopus_import: '1'
status: public
title: 'Testing general relativity using quasi-periodic oscillations from X-ray black
  holes: XTE J1550-564 and GRO J1655-40'
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 517
year: '2022'
...
---
_id: '15207'
abstract:
- lang: eng
  text: Of more than a thousand known cataclysmic variables (CVs), where a white dwarf
    is accreting from a hydrogen-rich star, only a dozen have orbital periods below
    75 minutes1,2,3,4,5,6,7,8,9. One way to achieve these short periods requires the
    donor star to have undergone substantial nuclear evolution before interacting
    with the white dwarf10,11,12,13,14, and it is expected that these objects will
    transition to helium accretion. These transitional CVs have been proposed as progenitors
    of helium CVs13,14,15,16,17,18. However, no known transitional CV is expected
    to reach an orbital period short enough to account for most of the helium CV population,
    leaving the role of this evolutionary pathway unclear. Here we report observations
    of ZTF J1813+4251, a 51-minute-orbital-period, fully eclipsing binary system consisting
    of a star with a temperature comparable to that of the Sun but a density 100 times
    greater owing to its helium-rich composition, accreting onto a white dwarf. Phase-resolved
    spectra, multi-band light curves and the broadband spectral energy distribution
    allow us to obtain precise and robust constraints on the masses, radii and temperatures
    of both components. Evolutionary modelling shows that ZTF J1813+4251 is destined
    to become a helium CV binary, reaching an orbital period under 20 minutes, rendering
    ZTF J1813+4251 a previously missing link between helium CV binaries and hydrogen-rich
    CVs.
article_processing_charge: No
article_type: original
arxiv: 1
author:
- first_name: Kevin B.
  full_name: Burdge, Kevin B.
  last_name: Burdge
- first_name: Kareem
  full_name: El-Badry, Kareem
  last_name: El-Badry
- first_name: Thomas R.
  full_name: Marsh, Thomas R.
  last_name: Marsh
- first_name: Saul
  full_name: Rappaport, Saul
  last_name: Rappaport
- first_name: Warren R.
  full_name: Brown, Warren R.
  last_name: Brown
- first_name: Ilaria
  full_name: Caiazzo, Ilaria
  id: 8ae5b6e7-2a03-11ee-914d-b58ed7a3b47d
  last_name: Caiazzo
  orcid: 0000-0002-4770-5388
- first_name: Deepto
  full_name: Chakrabarty, Deepto
  last_name: Chakrabarty
- first_name: V. S.
  full_name: Dhillon, V. S.
  last_name: Dhillon
- first_name: Jim
  full_name: Fuller, Jim
  last_name: Fuller
- first_name: Boris T.
  full_name: Gänsicke, Boris T.
  last_name: Gänsicke
- first_name: Matthew J.
  full_name: Graham, Matthew J.
  last_name: Graham
- first_name: Erin
  full_name: Kara, Erin
  last_name: Kara
- first_name: S. R.
  full_name: Kulkarni, S. R.
  last_name: Kulkarni
- first_name: S. P.
  full_name: Littlefair, S. P.
  last_name: Littlefair
- first_name: Przemek
  full_name: Mróz, Przemek
  last_name: Mróz
- first_name: Pablo
  full_name: Rodríguez-Gil, Pablo
  last_name: Rodríguez-Gil
- first_name: Jan van
  full_name: Roestel, Jan van
  last_name: Roestel
- first_name: Robert A.
  full_name: Simcoe, Robert A.
  last_name: Simcoe
- first_name: Eric C.
  full_name: Bellm, Eric C.
  last_name: Bellm
- first_name: Andrew J.
  full_name: Drake, Andrew J.
  last_name: Drake
- first_name: Richard G.
  full_name: Dekany, Richard G.
  last_name: Dekany
- first_name: Steven L.
  full_name: Groom, Steven L.
  last_name: Groom
- first_name: Russ R.
  full_name: Laher, Russ R.
  last_name: Laher
- first_name: Frank J.
  full_name: Masci, Frank J.
  last_name: Masci
- first_name: Reed
  full_name: Riddle, Reed
  last_name: Riddle
- first_name: Roger M.
  full_name: Smith, Roger M.
  last_name: Smith
- first_name: Thomas A.
  full_name: Prince, Thomas A.
  last_name: Prince
citation:
  ama: Burdge KB, El-Badry K, Marsh TR, et al. A dense 0.1-solar-mass star in a 51-minute-orbital-period
    eclipsing binary. <i>Nature</i>. 2022;610(7932):467-471. doi:<a href="https://doi.org/10.1038/s41586-022-05195-x">10.1038/s41586-022-05195-x</a>
  apa: Burdge, K. B., El-Badry, K., Marsh, T. R., Rappaport, S., Brown, W. R., Caiazzo,
    I., … Prince, T. A. (2022). A dense 0.1-solar-mass star in a 51-minute-orbital-period
    eclipsing binary. <i>Nature</i>. Springer Nature. <a href="https://doi.org/10.1038/s41586-022-05195-x">https://doi.org/10.1038/s41586-022-05195-x</a>
  chicago: Burdge, Kevin B., Kareem El-Badry, Thomas R. Marsh, Saul Rappaport, Warren
    R. Brown, Ilaria Caiazzo, Deepto Chakrabarty, et al. “A Dense 0.1-Solar-Mass Star
    in a 51-Minute-Orbital-Period Eclipsing Binary.” <i>Nature</i>. Springer Nature,
    2022. <a href="https://doi.org/10.1038/s41586-022-05195-x">https://doi.org/10.1038/s41586-022-05195-x</a>.
  ieee: K. B. Burdge <i>et al.</i>, “A dense 0.1-solar-mass star in a 51-minute-orbital-period
    eclipsing binary,” <i>Nature</i>, vol. 610, no. 7932. Springer Nature, pp. 467–471,
    2022.
  ista: Burdge KB, El-Badry K, Marsh TR, Rappaport S, Brown WR, Caiazzo I, Chakrabarty
    D, Dhillon VS, Fuller J, Gänsicke BT, Graham MJ, Kara E, Kulkarni SR, Littlefair
    SP, Mróz P, Rodríguez-Gil P, Roestel J van, Simcoe RA, Bellm EC, Drake AJ, Dekany
    RG, Groom SL, Laher RR, Masci FJ, Riddle R, Smith RM, Prince TA. 2022. A dense
    0.1-solar-mass star in a 51-minute-orbital-period eclipsing binary. Nature. 610(7932),
    467–471.
  mla: Burdge, Kevin B., et al. “A Dense 0.1-Solar-Mass Star in a 51-Minute-Orbital-Period
    Eclipsing Binary.” <i>Nature</i>, vol. 610, no. 7932, Springer Nature, 2022, pp.
    467–71, doi:<a href="https://doi.org/10.1038/s41586-022-05195-x">10.1038/s41586-022-05195-x</a>.
  short: K.B. Burdge, K. El-Badry, T.R. Marsh, S. Rappaport, W.R. Brown, I. Caiazzo,
    D. Chakrabarty, V.S. Dhillon, J. Fuller, B.T. Gänsicke, M.J. Graham, E. Kara,
    S.R. Kulkarni, S.P. Littlefair, P. Mróz, P. Rodríguez-Gil, J. van Roestel, R.A.
    Simcoe, E.C. Bellm, A.J. Drake, R.G. Dekany, S.L. Groom, R.R. Laher, F.J. Masci,
    R. Riddle, R.M. Smith, T.A. Prince, Nature 610 (2022) 467–471.
date_created: 2024-03-26T09:52:17Z
date_published: 2022-10-05T00:00:00Z
date_updated: 2024-04-02T07:18:43Z
day: '05'
doi: 10.1038/s41586-022-05195-x
extern: '1'
external_id:
  arxiv:
  - '2210.01809'
  pmid:
  - '36198793'
fulldoi: https://doi.org/10.1038/s41586-022-05195-x
intvolume: '       610'
issue: '7932'
language:
- iso: eng
main_file_link:
- open_access: '1'
  url: https://arxiv.org/abs/2210.01809
month: '10'
oa: 1
oa_version: Preprint
page: 467-471
pmid: 1
publication: Nature
publication_identifier:
  eissn:
  - 1476-4687
  issn:
  - 0028-0836
publication_status: published
publisher: Springer Nature
quality_controlled: '1'
scopus_import: '1'
status: public
title: A dense 0.1-solar-mass star in a 51-minute-orbital-period eclipsing binary
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 610
year: '2022'
...
---
_id: '15208'
abstract:
- lang: eng
  text: This year, a new era of observations of compact objects in X-ray polarization
    is commencing. Among the key targets for the Imaging X-ray Polarimetry Explorer
    mission are the magnetars 4U 0142+61 and 1RXS J170849.0-400910. Here, we present
    detailed predictions of the expected polarization from these sources that incorporate
    realistic models of emission physics at the surface (gaseous or condensed), the
    temperature distribution on the surface, general relativity, quantum electrodynamics,
    and scattering in the magnetosphere, accounting for the broad-band spectral energy
    distribution from below 1 keV to nearly 100 keV. We find that either atmospheres
    or condensed surfaces can account for the emission at a few keV. In both cases,
    either a small hot polar cap or scattering is required to account for the emission
    at 5–10 keV and, above 10 keV, scattering by a hard population of electrons can
    account for the rising power in the hard X-rays observed in many magnetars in
    quiescence. Although these different scenarios result in very similar spectral
    energy distributions, they generate dramatically different polarization signatures
    from 2 to 8 keV, which is the range of sensitivity of the Imaging X-ray Polarimetry
    Explorer. Observations of these sources in X-ray polarization will therefore probe
    the emission from magnetars in an essentially new way.
article_processing_charge: No
article_type: original
arxiv: 1
author:
- first_name: Ilaria
  full_name: Caiazzo, Ilaria
  id: 8ae5b6e7-2a03-11ee-914d-b58ed7a3b47d
  last_name: Caiazzo
  orcid: 0000-0002-4770-5388
- first_name: Denis
  full_name: González-Caniulef, Denis
  last_name: González-Caniulef
- first_name: Jeremy
  full_name: Heyl, Jeremy
  last_name: Heyl
- first_name: Rodrigo
  full_name: Fernández, Rodrigo
  last_name: Fernández
citation:
  ama: Caiazzo I, González-Caniulef D, Heyl J, Fernández R. Probing magnetar emission
    mechanisms with X-ray spectropolarimetry. <i>Monthly Notices of the Royal Astronomical
    Society</i>. 2022;514(4):5024-5034. doi:<a href="https://doi.org/10.1093/mnras/stac1571">10.1093/mnras/stac1571</a>
  apa: Caiazzo, I., González-Caniulef, D., Heyl, J., &#38; Fernández, R. (2022). Probing
    magnetar emission mechanisms with X-ray spectropolarimetry. <i>Monthly Notices
    of the Royal Astronomical Society</i>. Oxford University Press. <a href="https://doi.org/10.1093/mnras/stac1571">https://doi.org/10.1093/mnras/stac1571</a>
  chicago: Caiazzo, Ilaria, Denis González-Caniulef, Jeremy Heyl, and Rodrigo Fernández.
    “Probing Magnetar Emission Mechanisms with X-Ray Spectropolarimetry.” <i>Monthly
    Notices of the Royal Astronomical Society</i>. Oxford University Press, 2022.
    <a href="https://doi.org/10.1093/mnras/stac1571">https://doi.org/10.1093/mnras/stac1571</a>.
  ieee: I. Caiazzo, D. González-Caniulef, J. Heyl, and R. Fernández, “Probing magnetar
    emission mechanisms with X-ray spectropolarimetry,” <i>Monthly Notices of the
    Royal Astronomical Society</i>, vol. 514, no. 4. Oxford University Press, pp.
    5024–5034, 2022.
  ista: Caiazzo I, González-Caniulef D, Heyl J, Fernández R. 2022. Probing magnetar
    emission mechanisms with X-ray spectropolarimetry. Monthly Notices of the Royal
    Astronomical Society. 514(4), 5024–5034.
  mla: Caiazzo, Ilaria, et al. “Probing Magnetar Emission Mechanisms with X-Ray Spectropolarimetry.”
    <i>Monthly Notices of the Royal Astronomical Society</i>, vol. 514, no. 4, Oxford
    University Press, 2022, pp. 5024–34, doi:<a href="https://doi.org/10.1093/mnras/stac1571">10.1093/mnras/stac1571</a>.
  short: I. Caiazzo, D. González-Caniulef, J. Heyl, R. Fernández, Monthly Notices
    of the Royal Astronomical Society 514 (2022) 5024–5034.
date_created: 2024-03-26T09:52:41Z
date_published: 2022-06-09T00:00:00Z
date_updated: 2024-10-14T12:32:39Z
day: '09'
doi: 10.1093/mnras/stac1571
extern: '1'
external_id:
  arxiv:
  - '2112.03401'
fulldoi: https://doi.org/10.1093/mnras/stac1571
intvolume: '       514'
issue: '4'
keyword:
- Space and Planetary Science
- Astronomy and Astrophysics
language:
- iso: eng
main_file_link:
- open_access: '1'
  url: https://arxiv.org/abs/2112.03401
month: '06'
oa: 1
oa_version: Preprint
page: 5024-5034
publication: Monthly Notices of the Royal Astronomical Society
publication_identifier:
  eissn:
  - 1365-2966
  issn:
  - 0035-8711
publication_status: published
publisher: Oxford University Press
quality_controlled: '1'
scopus_import: '1'
status: public
title: Probing magnetar emission mechanisms with X-ray spectropolarimetry
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 514
year: '2022'
...
---
_id: '15209'
abstract:
- lang: eng
  text: It has been recently suggested that white dwarfs generate magnetic fields
    in a process analogous to the Earth. The crystallization of the core creates a
    compositional inversion that drives convection, and combined with rotation, this
    can sustain a magnetic dynamo. We reanalyse the dynamo mechanism, arising from
    the slow crystallization of the core, and find convective turnover times tconv
    of weeks to months – longer by orders of magnitude than previously thought. With
    white dwarf spin periods P ≪ tconv, crystallization-driven dynamos are almost
    always in the fast-rotating regime, where the magnetic field B is at least in
    equipartition with the convective motion and is possibly further enhanced by a
    factor of B ∝ (tconv/P)1/2, depending on the assumed dynamo scaling law. We track
    the growth of the crystallized core using MESA and compute the magnetic field
    B(Teff) as a function of the white dwarf’s effective temperature Teff. We compare
    this prediction with observations and show that crystallization-driven dynamos
    can explain some – but not all – of the ∼MG magnetic fields measured for single
    white dwarfs, as well as the stronger fields measured for white dwarfs in cataclysmic
    variables, which were spun up by mass accretion to short P. Our B(Teff) curves
    might also explain the clustering of white dwarfs with Balmer emission lines around
    Teff ≈ 7500 K.
article_processing_charge: No
article_type: original
arxiv: 1
author:
- first_name: Sivan
  full_name: Ginzburg, Sivan
  last_name: Ginzburg
- first_name: Jim
  full_name: Fuller, Jim
  last_name: Fuller
- first_name: Adela
  full_name: Kawka, Adela
  last_name: Kawka
- first_name: Ilaria
  full_name: Caiazzo, Ilaria
  id: 8ae5b6e7-2a03-11ee-914d-b58ed7a3b47d
  last_name: Caiazzo
  orcid: 0000-0002-4770-5388
citation:
  ama: Ginzburg S, Fuller J, Kawka A, Caiazzo I. Slow convection and fast rotation
    in crystallization-driven white dwarf dynamos. <i>Monthly Notices of the Royal
    Astronomical Society</i>. 2022;514(3):4111-4119. doi:<a href="https://doi.org/10.1093/mnras/stac1363">10.1093/mnras/stac1363</a>
  apa: Ginzburg, S., Fuller, J., Kawka, A., &#38; Caiazzo, I. (2022). Slow convection
    and fast rotation in crystallization-driven white dwarf dynamos. <i>Monthly Notices
    of the Royal Astronomical Society</i>. Oxford University Press. <a href="https://doi.org/10.1093/mnras/stac1363">https://doi.org/10.1093/mnras/stac1363</a>
  chicago: Ginzburg, Sivan, Jim Fuller, Adela Kawka, and Ilaria Caiazzo. “Slow Convection
    and Fast Rotation in Crystallization-Driven White Dwarf Dynamos.” <i>Monthly Notices
    of the Royal Astronomical Society</i>. Oxford University Press, 2022. <a href="https://doi.org/10.1093/mnras/stac1363">https://doi.org/10.1093/mnras/stac1363</a>.
  ieee: S. Ginzburg, J. Fuller, A. Kawka, and I. Caiazzo, “Slow convection and fast
    rotation in crystallization-driven white dwarf dynamos,” <i>Monthly Notices of
    the Royal Astronomical Society</i>, vol. 514, no. 3. Oxford University Press,
    pp. 4111–4119, 2022.
  ista: Ginzburg S, Fuller J, Kawka A, Caiazzo I. 2022. Slow convection and fast rotation
    in crystallization-driven white dwarf dynamos. Monthly Notices of the Royal Astronomical
    Society. 514(3), 4111–4119.
  mla: Ginzburg, Sivan, et al. “Slow Convection and Fast Rotation in Crystallization-Driven
    White Dwarf Dynamos.” <i>Monthly Notices of the Royal Astronomical Society</i>,
    vol. 514, no. 3, Oxford University Press, 2022, pp. 4111–19, doi:<a href="https://doi.org/10.1093/mnras/stac1363">10.1093/mnras/stac1363</a>.
  short: S. Ginzburg, J. Fuller, A. Kawka, I. Caiazzo, Monthly Notices of the Royal
    Astronomical Society 514 (2022) 4111–4119.
date_created: 2024-03-26T09:53:04Z
date_published: 2022-05-16T00:00:00Z
date_updated: 2024-04-02T07:24:15Z
day: '16'
doi: 10.1093/mnras/stac1363
extern: '1'
external_id:
  arxiv:
  - '2202.12902'
fulldoi: https://doi.org/10.1093/mnras/stac1363
intvolume: '       514'
issue: '3'
keyword:
- Space and Planetary Science
- Astronomy and Astrophysics
language:
- iso: eng
main_file_link:
- open_access: '1'
  url: https://arxiv.org/abs/2202.12902
month: '05'
oa: 1
oa_version: Preprint
page: 4111-4119
publication: Monthly Notices of the Royal Astronomical Society
publication_identifier:
  eissn:
  - 1365-2966
  issn:
  - 0035-8711
publication_status: published
publisher: Oxford University Press
quality_controlled: '1'
scopus_import: '1'
status: public
title: Slow convection and fast rotation in crystallization-driven white dwarf dynamos
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 514
year: '2022'
...
---
_id: '15210'
abstract:
- lang: eng
  text: The maximum mass of a star that can produce a white dwarf (WD) is an important
    astrophysical quantity. One of the best approaches to establishing this limit
    is to search for WDs in young star clusters in which only massive stars have had
    time to evolve and where the mass of the progenitor can be established from the
    cooling time of the WD together with the age of the cluster. Searches in young
    Milky Way clusters have not thus far yielded WD members more massive than about
    1.1 M⊙, well below the Chandrasekhar mass of 1.38 M⊙, nor progenitors with masses
    in excess of about 6 M⊙. However, the hunt for potentially massive WDs that escaped
    their cluster environs is yielding interesting candidates. To expand the cluster
    sample further, we used HST to survey four young and massive star clusters in
    the Magellanic Clouds for bright WDs that could have evolved from stars as massive
    as 10 M⊙. We located five potential WD candidates in the oldest of the four clusters
    examined, the first extragalactic single WDs thus far discovered. As these hot
    WDs are very faint at optical wavelengths, final confirmation will likely have
    to await spectroscopy with 30 m class telescopes.
article_number: L20
article_processing_charge: No
article_type: original
arxiv: 1
author:
- first_name: Harvey B.
  full_name: Richer, Harvey B.
  last_name: Richer
- first_name: Roger E.
  full_name: Cohen, Roger E.
  last_name: Cohen
- first_name: Jeremy
  full_name: Heyl, Jeremy
  last_name: Heyl
- first_name: Jason
  full_name: Kalirai, Jason
  last_name: Kalirai
- first_name: Ilaria
  full_name: Caiazzo, Ilaria
  id: 8ae5b6e7-2a03-11ee-914d-b58ed7a3b47d
  last_name: Caiazzo
  orcid: 0000-0002-4770-5388
- first_name: Matteo
  full_name: Correnti, Matteo
  last_name: Correnti
- first_name: Jeffrey
  full_name: Cummings, Jeffrey
  last_name: Cummings
- first_name: Paul
  full_name: Goudfrooij, Paul
  last_name: Goudfrooij
- first_name: Bradley M. S.
  full_name: Hansen, Bradley M. S.
  last_name: Hansen
- first_name: Molly
  full_name: Peeples, Molly
  last_name: Peeples
- first_name: Elena
  full_name: Sabbi, Elena
  last_name: Sabbi
- first_name: Pier-Emmanuel
  full_name: Tremblay, Pier-Emmanuel
  last_name: Tremblay
- first_name: Benjamin
  full_name: Williams, Benjamin
  last_name: Williams
citation:
  ama: Richer HB, Cohen RE, Heyl J, et al. When do stars go boom? <i>The Astrophysical
    Journal Letters</i>. 2022;931(2). doi:<a href="https://doi.org/10.3847/2041-8213/ac6585">10.3847/2041-8213/ac6585</a>
  apa: Richer, H. B., Cohen, R. E., Heyl, J., Kalirai, J., Caiazzo, I., Correnti,
    M., … Williams, B. (2022). When do stars go boom? <i>The Astrophysical Journal
    Letters</i>. American Astronomical Society. <a href="https://doi.org/10.3847/2041-8213/ac6585">https://doi.org/10.3847/2041-8213/ac6585</a>
  chicago: Richer, Harvey B., Roger E. Cohen, Jeremy Heyl, Jason Kalirai, Ilaria Caiazzo,
    Matteo Correnti, Jeffrey Cummings, et al. “When Do Stars Go Boom?” <i>The Astrophysical
    Journal Letters</i>. American Astronomical Society, 2022. <a href="https://doi.org/10.3847/2041-8213/ac6585">https://doi.org/10.3847/2041-8213/ac6585</a>.
  ieee: H. B. Richer <i>et al.</i>, “When do stars go boom?,” <i>The Astrophysical
    Journal Letters</i>, vol. 931, no. 2. American Astronomical Society, 2022.
  ista: Richer HB, Cohen RE, Heyl J, Kalirai J, Caiazzo I, Correnti M, Cummings J,
    Goudfrooij P, Hansen BMS, Peeples M, Sabbi E, Tremblay P-E, Williams B. 2022.
    When do stars go boom? The Astrophysical Journal Letters. 931(2), L20.
  mla: Richer, Harvey B., et al. “When Do Stars Go Boom?” <i>The Astrophysical Journal
    Letters</i>, vol. 931, no. 2, L20, American Astronomical Society, 2022, doi:<a
    href="https://doi.org/10.3847/2041-8213/ac6585">10.3847/2041-8213/ac6585</a>.
  short: H.B. Richer, R.E. Cohen, J. Heyl, J. Kalirai, I. Caiazzo, M. Correnti, J.
    Cummings, P. Goudfrooij, B.M.S. Hansen, M. Peeples, E. Sabbi, P.-E. Tremblay,
    B. Williams, The Astrophysical Journal Letters 931 (2022).
date_created: 2024-03-26T10:28:48Z
date_published: 2022-05-30T00:00:00Z
date_updated: 2024-04-02T07:25:50Z
day: '30'
doi: 10.3847/2041-8213/ac6585
extern: '1'
external_id:
  arxiv:
  - '2203.11264'
fulldoi: https://doi.org/10.3847/2041-8213/ac6585
intvolume: '       931'
issue: '2'
keyword:
- Space and Planetary Science
- Astronomy and Astrophysics
language:
- iso: eng
license: https://creativecommons.org/licenses/by/4.0/
main_file_link:
- open_access: '1'
  url: https://doi.org/10.3847/2041-8213/ac6585
month: '05'
oa: 1
oa_version: Published Version
publication: The Astrophysical Journal Letters
publication_identifier:
  eissn:
  - 2041-8213
  issn:
  - 2041-8205
publication_status: published
publisher: American Astronomical Society
quality_controlled: '1'
scopus_import: '1'
status: public
title: When do stars go boom?
tmp:
  image: /images/cc_by.png
  legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode
  name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)
  short: CC BY (4.0)
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 931
year: '2022'
...
---
_id: '15211'
abstract:
- lang: eng
  text: Over a dozen millisecond pulsars are ablating low-mass companions in close
    binary systems. In the original ‘black widow’, the eight-hour orbital period eclipsing
    pulsar PSR J1959+2048 (PSR B1957+20)1, high-energy emission originating from the
    pulsar2 is irradiating and may eventually destroy3 a low-mass companion. These
    systems are not only physical laboratories that reveal the interesting results
    of exposing a close companion star to the relativistic energy output of a pulsar,
    but are also believed to harbour some of the most massive neutron stars4, allowing
    for robust tests of the neutron star equation of state. Here we report observations
    of ZTF J1406+1222, a wide hierarchical triple hosting a 62-minute orbital period
    black widow candidate, the optical flux of which varies by a factor of more than
    ten. ZTF J1406+1222 pushes the boundaries of evolutionary models5, falling below
    the 80-minute minimum orbital period of hydrogen-rich systems. The wide tertiary
    companion is a rare low-metallicity cool subdwarf star, and the system has a Galactic
    halo orbit consistent with passing near the Galactic Centre, making it a probe
    of formation channels, neutron star kick physics6 and binary evolution.
article_processing_charge: No
article_type: original
arxiv: 1
author:
- first_name: Kevin B.
  full_name: Burdge, Kevin B.
  last_name: Burdge
- first_name: Thomas R.
  full_name: Marsh, Thomas R.
  last_name: Marsh
- first_name: Jim
  full_name: Fuller, Jim
  last_name: Fuller
- first_name: Eric C.
  full_name: Bellm, Eric C.
  last_name: Bellm
- first_name: Ilaria
  full_name: Caiazzo, Ilaria
  id: 8ae5b6e7-2a03-11ee-914d-b58ed7a3b47d
  last_name: Caiazzo
  orcid: 0000-0002-4770-5388
- first_name: Deepto
  full_name: Chakrabarty, Deepto
  last_name: Chakrabarty
- first_name: Michael W.
  full_name: Coughlin, Michael W.
  last_name: Coughlin
- first_name: Kishalay
  full_name: De, Kishalay
  last_name: De
- first_name: V. S.
  full_name: Dhillon, V. S.
  last_name: Dhillon
- first_name: Matthew J.
  full_name: Graham, Matthew J.
  last_name: Graham
- first_name: Pablo
  full_name: Rodríguez-Gil, Pablo
  last_name: Rodríguez-Gil
- first_name: Amruta D.
  full_name: Jaodand, Amruta D.
  last_name: Jaodand
- first_name: David L.
  full_name: Kaplan, David L.
  last_name: Kaplan
- first_name: Erin
  full_name: Kara, Erin
  last_name: Kara
- first_name: Albert K. H.
  full_name: Kong, Albert K. H.
  last_name: Kong
- first_name: S. R.
  full_name: Kulkarni, S. R.
  last_name: Kulkarni
- first_name: Kwan-Lok
  full_name: Li, Kwan-Lok
  last_name: Li
- first_name: S. P.
  full_name: Littlefair, S. P.
  last_name: Littlefair
- first_name: Walid A.
  full_name: Majid, Walid A.
  last_name: Majid
- first_name: Przemek
  full_name: Mróz, Przemek
  last_name: Mróz
- first_name: Aaron B.
  full_name: Pearlman, Aaron B.
  last_name: Pearlman
- first_name: E. S.
  full_name: Phinney, E. S.
  last_name: Phinney
- first_name: Jan van
  full_name: Roestel, Jan van
  last_name: Roestel
- first_name: Robert A.
  full_name: Simcoe, Robert A.
  last_name: Simcoe
- first_name: Igor
  full_name: Andreoni, Igor
  last_name: Andreoni
- first_name: Andrew J.
  full_name: Drake, Andrew J.
  last_name: Drake
- first_name: Richard G.
  full_name: Dekany, Richard G.
  last_name: Dekany
- first_name: Dmitry A.
  full_name: Duev, Dmitry A.
  last_name: Duev
- first_name: Erik C.
  full_name: Kool, Erik C.
  last_name: Kool
- first_name: Ashish A.
  full_name: Mahabal, Ashish A.
  last_name: Mahabal
- first_name: Michael S.
  full_name: Medford, Michael S.
  last_name: Medford
- first_name: Reed
  full_name: Riddle, Reed
  last_name: Riddle
- first_name: Thomas A.
  full_name: Prince, Thomas A.
  last_name: Prince
citation:
  ama: Burdge KB, Marsh TR, Fuller J, et al. A 62-minute orbital period black widow
    binary in a wide hierarchical triple. <i>Nature</i>. 2022;605(7908):41-45. doi:<a
    href="https://doi.org/10.1038/s41586-022-04551-1">10.1038/s41586-022-04551-1</a>
  apa: Burdge, K. B., Marsh, T. R., Fuller, J., Bellm, E. C., Caiazzo, I., Chakrabarty,
    D., … Prince, T. A. (2022). A 62-minute orbital period black widow binary in a
    wide hierarchical triple. <i>Nature</i>. Springer Nature. <a href="https://doi.org/10.1038/s41586-022-04551-1">https://doi.org/10.1038/s41586-022-04551-1</a>
  chicago: Burdge, Kevin B., Thomas R. Marsh, Jim Fuller, Eric C. Bellm, Ilaria Caiazzo,
    Deepto Chakrabarty, Michael W. Coughlin, et al. “A 62-Minute Orbital Period Black
    Widow Binary in a Wide Hierarchical Triple.” <i>Nature</i>. Springer Nature, 2022.
    <a href="https://doi.org/10.1038/s41586-022-04551-1">https://doi.org/10.1038/s41586-022-04551-1</a>.
  ieee: K. B. Burdge <i>et al.</i>, “A 62-minute orbital period black widow binary
    in a wide hierarchical triple,” <i>Nature</i>, vol. 605, no. 7908. Springer Nature,
    pp. 41–45, 2022.
  ista: Burdge KB, Marsh TR, Fuller J, Bellm EC, Caiazzo I, Chakrabarty D, Coughlin
    MW, De K, Dhillon VS, Graham MJ, Rodríguez-Gil P, Jaodand AD, Kaplan DL, Kara
    E, Kong AKH, Kulkarni SR, Li K-L, Littlefair SP, Majid WA, Mróz P, Pearlman AB,
    Phinney ES, Roestel J van, Simcoe RA, Andreoni I, Drake AJ, Dekany RG, Duev DA,
    Kool EC, Mahabal AA, Medford MS, Riddle R, Prince TA. 2022. A 62-minute orbital
    period black widow binary in a wide hierarchical triple. Nature. 605(7908), 41–45.
  mla: Burdge, Kevin B., et al. “A 62-Minute Orbital Period Black Widow Binary in
    a Wide Hierarchical Triple.” <i>Nature</i>, vol. 605, no. 7908, Springer Nature,
    2022, pp. 41–45, doi:<a href="https://doi.org/10.1038/s41586-022-04551-1">10.1038/s41586-022-04551-1</a>.
  short: K.B. Burdge, T.R. Marsh, J. Fuller, E.C. Bellm, I. Caiazzo, D. Chakrabarty,
    M.W. Coughlin, K. De, V.S. Dhillon, M.J. Graham, P. Rodríguez-Gil, A.D. Jaodand,
    D.L. Kaplan, E. Kara, A.K.H. Kong, S.R. Kulkarni, K.-L. Li, S.P. Littlefair, W.A.
    Majid, P. Mróz, A.B. Pearlman, E.S. Phinney, J. van Roestel, R.A. Simcoe, I. Andreoni,
    A.J. Drake, R.G. Dekany, D.A. Duev, E.C. Kool, A.A. Mahabal, M.S. Medford, R.
    Riddle, T.A. Prince, Nature 605 (2022) 41–45.
date_created: 2024-03-26T10:29:26Z
date_published: 2022-05-04T00:00:00Z
date_updated: 2024-04-02T07:26:19Z
day: '04'
doi: 10.1038/s41586-022-04551-1
extern: '1'
external_id:
  arxiv:
  - '2205.02278'
  pmid:
  - '35508781'
fulldoi: https://doi.org/10.1038/s41586-022-04551-1
intvolume: '       605'
issue: '7908'
keyword:
- Multidisciplinary
language:
- iso: eng
main_file_link:
- open_access: '1'
  url: https://arxiv.org/abs/2205.02278
month: '05'
oa: 1
oa_version: Preprint
page: 41-45
pmid: 1
publication: Nature
publication_identifier:
  eissn:
  - 1476-4687
  issn:
  - 0028-0836
publication_status: published
publisher: Springer Nature
quality_controlled: '1'
scopus_import: '1'
status: public
title: A 62-minute orbital period black widow binary in a wide hierarchical triple
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 605
year: '2022'
...
---
_id: '15212'
abstract:
- lang: eng
  text: We determine the distribution of cooling ages of massive Gaia EDR3 white dwarfs
    identified with over 90 per cent probability within 200 pc and with mass in the
    range 0.95–1.25 M⊙. Using three sets of publicly available models, we consider
    sub-samples of these white dwarfs sorted into three equally spaced mass bins.
    Under the assumption of a constant white dwarf formation rate, we find an excess
    of white dwarfs, both along the Q branch and below it, corresponding respectively
    to stars that are in the process of freezing and those that are completely frozen.
    We compare the cooling age distributions for each of these bins to the recently
    determined time-varying star formation rate of Gaia DR2 main sequence stars. For
    white dwarfs in the two lightest mass bins, spanning the mass range 0.95–1.15
    M⊙, we find that the cumulative cooling age distribution is statistically consistent
    with the expectation from the star formation rate. For white dwarfs in the heaviest
    mass bin, 1.15–1.25 M⊙, we find that their cumulative distribution is inconsistent
    with the star formation rate for all of the models considered; instead, we find
    that their cooling age distribution is well fitted by a linear combination of
    the distribution expected for single stellar evolution products and the distribution
    expected for double white dwarf merger products when approximately 40–50 per cent
    of the 1.15–1.25 M⊙ white dwarfs that formed over the past 4 Gyr are produced
    through double white dwarf mergers.
article_processing_charge: No
article_type: original
arxiv: 1
author:
- first_name: Leesa
  full_name: Fleury, Leesa
  last_name: Fleury
- first_name: Ilaria
  full_name: Caiazzo, Ilaria
  id: 8ae5b6e7-2a03-11ee-914d-b58ed7a3b47d
  last_name: Caiazzo
  orcid: 0000-0002-4770-5388
- first_name: Jeremy
  full_name: Heyl, Jeremy
  last_name: Heyl
citation:
  ama: Fleury L, Caiazzo I, Heyl J. The cooling of massive white dwarfs from <i>Gaia</i>
    EDR3. <i>Monthly Notices of the Royal Astronomical Society</i>. 2022;511(4):5984-5993.
    doi:<a href="https://doi.org/10.1093/mnras/stac458">10.1093/mnras/stac458</a>
  apa: Fleury, L., Caiazzo, I., &#38; Heyl, J. (2022). The cooling of massive white
    dwarfs from <i>Gaia</i> EDR3. <i>Monthly Notices of the Royal Astronomical Society</i>.
    Oxford University Press. <a href="https://doi.org/10.1093/mnras/stac458">https://doi.org/10.1093/mnras/stac458</a>
  chicago: Fleury, Leesa, Ilaria Caiazzo, and Jeremy Heyl. “The Cooling of Massive
    White Dwarfs from <i>Gaia</i> EDR3.” <i>Monthly Notices of the Royal Astronomical
    Society</i>. Oxford University Press, 2022. <a href="https://doi.org/10.1093/mnras/stac458">https://doi.org/10.1093/mnras/stac458</a>.
  ieee: L. Fleury, I. Caiazzo, and J. Heyl, “The cooling of massive white dwarfs from
    <i>Gaia</i> EDR3,” <i>Monthly Notices of the Royal Astronomical Society</i>, vol.
    511, no. 4. Oxford University Press, pp. 5984–5993, 2022.
  ista: Fleury L, Caiazzo I, Heyl J. 2022. The cooling of massive white dwarfs from
    <i>Gaia</i> EDR3. Monthly Notices of the Royal Astronomical Society. 511(4), 5984–5993.
  mla: Fleury, Leesa, et al. “The Cooling of Massive White Dwarfs from <i>Gaia</i>
    EDR3.” <i>Monthly Notices of the Royal Astronomical Society</i>, vol. 511, no.
    4, Oxford University Press, 2022, pp. 5984–93, doi:<a href="https://doi.org/10.1093/mnras/stac458">10.1093/mnras/stac458</a>.
  short: L. Fleury, I. Caiazzo, J. Heyl, Monthly Notices of the Royal Astronomical
    Society 511 (2022) 5984–5993.
date_created: 2024-03-26T10:31:05Z
date_published: 2022-02-21T00:00:00Z
date_updated: 2024-04-02T07:26:50Z
day: '21'
doi: 10.1093/mnras/stac458
extern: '1'
external_id:
  arxiv:
  - '2110.00598'
fulldoi: https://doi.org/10.1093/mnras/stac458
intvolume: '       511'
issue: '4'
keyword:
- Space and Planetary Science
- Astronomy and Astrophysics
language:
- iso: eng
main_file_link:
- open_access: '1'
  url: https://arxiv.org/abs/2110.00598
month: '02'
oa: 1
oa_version: Preprint
page: 5984-5993
publication: Monthly Notices of the Royal Astronomical Society
publication_identifier:
  eissn:
  - 1365-2966
  issn:
  - 0035-8711
publication_status: published
publisher: Oxford University Press
quality_controlled: '1'
scopus_import: '1'
status: public
title: The cooling of massive white dwarfs from <i>Gaia</i> EDR3
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 511
year: '2022'
...
---
_id: '15213'
abstract:
- lang: eng
  text: We searched through the entire Gaia EDR3 candidate white dwarf catalog for
    stars with proper motions and positions that are consistent with them having escaped
    from the Alpha Persei cluster within the past 81 Myr, the age of the cluster.
    In this search we found five candidate white dwarf escapees from Alpha Persei
    and obtained spectra for all of them. We confirm that three are massive white
    dwarfs sufficiently young to have originated in the cluster. All these are more
    massive than any white dwarf previously associated with a cluster using Gaia astrometry,
    and possess some of the most massive progenitors. In particular, the white dwarf
    Gaia EDR3 4395978097863572, which lies within 25 pc of the cluster center, has
    a mass of about 1.20 solar masses and evolved from an 8.5 solar-mass star, pushing
    the upper limit for white dwarf formation from a single massive star, while still
    leaving a substantial gap between the resulting white dwarf mass and the Chandrasekhar
    mass.
article_number: L24
article_processing_charge: No
article_type: original
arxiv: 1
author:
- first_name: David R.
  full_name: Miller, David R.
  last_name: Miller
- first_name: Ilaria
  full_name: Caiazzo, Ilaria
  id: 8ae5b6e7-2a03-11ee-914d-b58ed7a3b47d
  last_name: Caiazzo
  orcid: 0000-0002-4770-5388
- first_name: Jeremy
  full_name: Heyl, Jeremy
  last_name: Heyl
- first_name: Harvey B.
  full_name: Richer, Harvey B.
  last_name: Richer
- first_name: Pier-Emmanuel
  full_name: Tremblay, Pier-Emmanuel
  last_name: Tremblay
citation:
  ama: Miller DR, Caiazzo I, Heyl J, Richer HB, Tremblay P-E. The ultramassive white
    dwarfs of the Alpha Persei cluster. <i>The Astrophysical Journal Letters</i>.
    2022;926(2). doi:<a href="https://doi.org/10.3847/2041-8213/ac50a5">10.3847/2041-8213/ac50a5</a>
  apa: Miller, D. R., Caiazzo, I., Heyl, J., Richer, H. B., &#38; Tremblay, P.-E.
    (2022). The ultramassive white dwarfs of the Alpha Persei cluster. <i>The Astrophysical
    Journal Letters</i>. American Astronomical Society. <a href="https://doi.org/10.3847/2041-8213/ac50a5">https://doi.org/10.3847/2041-8213/ac50a5</a>
  chicago: Miller, David R., Ilaria Caiazzo, Jeremy Heyl, Harvey B. Richer, and Pier-Emmanuel
    Tremblay. “The Ultramassive White Dwarfs of the Alpha Persei Cluster.” <i>The
    Astrophysical Journal Letters</i>. American Astronomical Society, 2022. <a href="https://doi.org/10.3847/2041-8213/ac50a5">https://doi.org/10.3847/2041-8213/ac50a5</a>.
  ieee: D. R. Miller, I. Caiazzo, J. Heyl, H. B. Richer, and P.-E. Tremblay, “The
    ultramassive white dwarfs of the Alpha Persei cluster,” <i>The Astrophysical Journal
    Letters</i>, vol. 926, no. 2. American Astronomical Society, 2022.
  ista: Miller DR, Caiazzo I, Heyl J, Richer HB, Tremblay P-E. 2022. The ultramassive
    white dwarfs of the Alpha Persei cluster. The Astrophysical Journal Letters. 926(2),
    L24.
  mla: Miller, David R., et al. “The Ultramassive White Dwarfs of the Alpha Persei
    Cluster.” <i>The Astrophysical Journal Letters</i>, vol. 926, no. 2, L24, American
    Astronomical Society, 2022, doi:<a href="https://doi.org/10.3847/2041-8213/ac50a5">10.3847/2041-8213/ac50a5</a>.
  short: D.R. Miller, I. Caiazzo, J. Heyl, H.B. Richer, P.-E. Tremblay, The Astrophysical
    Journal Letters 926 (2022).
date_created: 2024-03-26T10:31:25Z
date_published: 2022-02-21T00:00:00Z
date_updated: 2024-04-02T07:27:20Z
day: '21'
doi: 10.3847/2041-8213/ac50a5
extern: '1'
external_id:
  arxiv:
  - '2110.09668'
fulldoi: https://doi.org/10.3847/2041-8213/ac50a5
intvolume: '       926'
issue: '2'
keyword:
- Space and Planetary Science
- Astronomy and Astrophysics
language:
- iso: eng
main_file_link:
- open_access: '1'
  url: https://doi.org/10.3847/2041-8213/ac50a5
month: '02'
oa: 1
oa_version: Published Version
publication: The Astrophysical Journal Letters
publication_identifier:
  eissn:
  - 2041-8213
  issn:
  - 2041-8205
publication_status: published
publisher: American Astronomical Society
quality_controlled: '1'
scopus_import: '1'
status: public
title: The ultramassive white dwarfs of the Alpha Persei cluster
tmp:
  image: /images/cc_by.png
  legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode
  name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)
  short: CC BY (4.0)
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 926
year: '2022'
...
---
_id: '15214'
abstract:
- lang: eng
  text: We search through an eight million cubic parsec volume surrounding the Pleiades
    star cluster and the Sun to identify both the current and past members of the
    Pleiades cluster within the Gaia EDR3 data set. We find nearly 1300 current cluster
    members and 289 former cluster candidates. Many of these candidates lie well in
    front of or behind the cluster from our point of view, so formerly they were considered
    cluster members, but their parallaxes put them more than 10 pc from the center
    of the cluster today. Over the past 100 Myr we estimate that the cluster has lost
    twenty percent of its mass including two massive white dwarf stars and the α2
    Canum Venaticorum type variable star, 41 Tau. All three white dwarfs associated
    with the cluster are massive (1.01–1.06 M⊙) and have progenitors with main-sequence
    masses of about six solar masses. Although we did not associate any giant stars
    with the cluster, the cooling time of the oldest white dwarf of 60 Myr gives a
    firm lower limit on the age of the cluster.
article_number: '132'
article_processing_charge: No
article_type: original
arxiv: 1
author:
- first_name: Jeremy
  full_name: Heyl, Jeremy
  last_name: Heyl
- first_name: Ilaria
  full_name: Caiazzo, Ilaria
  id: 8ae5b6e7-2a03-11ee-914d-b58ed7a3b47d
  last_name: Caiazzo
  orcid: 0000-0002-4770-5388
- first_name: Harvey B.
  full_name: Richer, Harvey B.
  last_name: Richer
citation:
  ama: Heyl J, Caiazzo I, Richer HB. Reconstructing the Pleiades with Gaia EDR3. <i>The
    Astrophysical Journal</i>. 2022;926(2). doi:<a href="https://doi.org/10.3847/1538-4357/ac45fc">10.3847/1538-4357/ac45fc</a>
  apa: Heyl, J., Caiazzo, I., &#38; Richer, H. B. (2022). Reconstructing the Pleiades
    with Gaia EDR3. <i>The Astrophysical Journal</i>. American Astronomical Society.
    <a href="https://doi.org/10.3847/1538-4357/ac45fc">https://doi.org/10.3847/1538-4357/ac45fc</a>
  chicago: Heyl, Jeremy, Ilaria Caiazzo, and Harvey B. Richer. “Reconstructing the
    Pleiades with Gaia EDR3.” <i>The Astrophysical Journal</i>. American Astronomical
    Society, 2022. <a href="https://doi.org/10.3847/1538-4357/ac45fc">https://doi.org/10.3847/1538-4357/ac45fc</a>.
  ieee: J. Heyl, I. Caiazzo, and H. B. Richer, “Reconstructing the Pleiades with Gaia
    EDR3,” <i>The Astrophysical Journal</i>, vol. 926, no. 2. American Astronomical
    Society, 2022.
  ista: Heyl J, Caiazzo I, Richer HB. 2022. Reconstructing the Pleiades with Gaia
    EDR3. The Astrophysical Journal. 926(2), 132.
  mla: Heyl, Jeremy, et al. “Reconstructing the Pleiades with Gaia EDR3.” <i>The Astrophysical
    Journal</i>, vol. 926, no. 2, 132, American Astronomical Society, 2022, doi:<a
    href="https://doi.org/10.3847/1538-4357/ac45fc">10.3847/1538-4357/ac45fc</a>.
  short: J. Heyl, I. Caiazzo, H.B. Richer, The Astrophysical Journal 926 (2022).
date_created: 2024-03-26T10:31:44Z
date_published: 2022-02-18T00:00:00Z
date_updated: 2024-04-02T07:27:52Z
day: '18'
doi: 10.3847/1538-4357/ac45fc
extern: '1'
external_id:
  arxiv:
  - '2110.03837'
fulldoi: https://doi.org/10.3847/1538-4357/ac45fc
intvolume: '       926'
issue: '2'
keyword:
- Space and Planetary Science
- Astronomy and Astrophysics
language:
- iso: eng
main_file_link:
- open_access: '1'
  url: https://doi.org/10.3847/1538-4357/ac45fc
month: '02'
oa: 1
oa_version: Published Version
publication: The Astrophysical Journal
publication_identifier:
  eissn:
  - 1538-4357
  issn:
  - 0004-637X
publication_status: published
publisher: American Astronomical Society
quality_controlled: '1'
scopus_import: '1'
status: public
title: Reconstructing the Pleiades with Gaia EDR3
tmp:
  image: /images/cc_by.png
  legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode
  name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)
  short: CC BY (4.0)
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 926
year: '2022'
...
---
_id: '15268'
abstract:
- lang: eng
  text: Apolipoprotein A‐I (apoA‐I) has a key function in the reverse cholesterol
    transport. However, aggregation of apoA‐I single point mutants can lead to hereditary
    amyloid pathology. Although several studies have tackled the biophysical and structural
    consequences introduced by these mutations, there is little information addressing
    the relationship between the evolutionary and structural features that contribute
    to the amyloid behavior of apoA‐I. We combined evolutionary studies, in silico
    mutagenesis and molecular dynamics (MD) simulations to provide a comprehensive
    analysis of the conservation and pathogenic role of the aggregation‐prone regions
    (APRs) present in apoA‐I. Sequence analysis demonstrated that among the four amyloidogenic
    regions described for human apoA‐I, only two (APR1 and APR4) are evolutionary
    conserved across different species of Sarcopterygii. Moreover, stability analysis
    carried out with the FoldX engine showed that APR1 contributes to the marginal
    stability of apoA‐I. Structural properties of full‐length apoA‐I models suggest
    that aggregation is avoided by placing APRs into highly packed and rigid portions
    of its native fold. Compared to silent variants extracted from the gnomAD database,
    the thermodynamic and pathogenic impact of amyloid mutations showed evidence of
    a higher destabilizing effect. MD simulations of the amyloid variant G26R evidenced
    the partial unfolding of the alpha‐helix bundle with the concomitant exposure
    of APR1 to the solvent, suggesting an insight into the early steps involved in
    its aggregation. Our findings highlight APR1 as a relevant component for apoA‐I
    structural integrity and emphasize a destabilizing effect of amyloid variants
    that leads to the exposure of this region.
article_processing_charge: No
article_type: original
author:
- first_name: Romina A.
  full_name: Gisonno, Romina A.
  last_name: Gisonno
- first_name: Tomas
  full_name: Masson, Tomas
  id: 93ac43e8-8599-11eb-9b86-f6efb0a4c207
  last_name: Masson
  orcid: 0000-0002-2634-6283
- first_name: Nahuel A.
  full_name: Ramella, Nahuel A.
  last_name: Ramella
- first_name: Exequiel E.
  full_name: Barrera, Exequiel E.
  last_name: Barrera
- first_name: Víctor
  full_name: Romanowski, Víctor
  last_name: Romanowski
- first_name: M. Alejandra
  full_name: Tricerri, M. Alejandra
  last_name: Tricerri
citation:
  ama: 'Gisonno RA, Masson T, Ramella NA, Barrera EE, Romanowski V, Tricerri MA. Evolutionary
    and structural constraints influencing apolipoprotein A‐I amyloid behavior. <i>Proteins:
    Structure, Function, and Bioinformatics</i>. 2022;90(1):258-269. doi:<a href="https://doi.org/10.1002/prot.26217">10.1002/prot.26217</a>'
  apa: 'Gisonno, R. A., Masson, T., Ramella, N. A., Barrera, E. E., Romanowski, V.,
    &#38; Tricerri, M. A. (2022). Evolutionary and structural constraints influencing
    apolipoprotein A‐I amyloid behavior. <i>Proteins: Structure, Function, and Bioinformatics</i>.
    Wiley. <a href="https://doi.org/10.1002/prot.26217">https://doi.org/10.1002/prot.26217</a>'
  chicago: 'Gisonno, Romina A., Tomas Masson, Nahuel A. Ramella, Exequiel E. Barrera,
    Víctor Romanowski, and M. Alejandra Tricerri. “Evolutionary and Structural Constraints
    Influencing Apolipoprotein A‐I Amyloid Behavior.” <i>Proteins: Structure, Function,
    and Bioinformatics</i>. Wiley, 2022. <a href="https://doi.org/10.1002/prot.26217">https://doi.org/10.1002/prot.26217</a>.'
  ieee: 'R. A. Gisonno, T. Masson, N. A. Ramella, E. E. Barrera, V. Romanowski, and
    M. A. Tricerri, “Evolutionary and structural constraints influencing apolipoprotein
    A‐I amyloid behavior,” <i>Proteins: Structure, Function, and Bioinformatics</i>,
    vol. 90, no. 1. Wiley, pp. 258–269, 2022.'
  ista: 'Gisonno RA, Masson T, Ramella NA, Barrera EE, Romanowski V, Tricerri MA.
    2022. Evolutionary and structural constraints influencing apolipoprotein A‐I amyloid
    behavior. Proteins: Structure, Function, and Bioinformatics. 90(1), 258–269.'
  mla: 'Gisonno, Romina A., et al. “Evolutionary and Structural Constraints Influencing
    Apolipoprotein A‐I Amyloid Behavior.” <i>Proteins: Structure, Function, and Bioinformatics</i>,
    vol. 90, no. 1, Wiley, 2022, pp. 258–69, doi:<a href="https://doi.org/10.1002/prot.26217">10.1002/prot.26217</a>.'
  short: 'R.A. Gisonno, T. Masson, N.A. Ramella, E.E. Barrera, V. Romanowski, M.A.
    Tricerri, Proteins: Structure, Function, and Bioinformatics 90 (2022) 258–269.'
corr_author: '1'
date_created: 2024-04-03T07:49:53Z
date_published: 2022-01-01T00:00:00Z
date_updated: 2024-10-09T21:08:44Z
day: '01'
department:
- _id: MaJö
doi: 10.1002/prot.26217
external_id:
  pmid:
  - '34414600'
fulldoi: https://doi.org/10.1002/prot.26217
intvolume: '        90'
issue: '1'
keyword:
- Molecular Biology
- Biochemistry
- Structural Biology
language:
- iso: eng
main_file_link:
- open_access: '1'
  url: https://doi.org/10.1101/2020.09.18.304337
month: '01'
oa: 1
oa_version: Preprint
page: 258-269
pmid: 1
publication: 'Proteins: Structure, Function, and Bioinformatics'
publication_identifier:
  eissn:
  - 1097-0134
  issn:
  - 0887-3585
publication_status: published
publisher: Wiley
quality_controlled: '1'
status: public
title: Evolutionary and structural constraints influencing apolipoprotein A‐I amyloid
  behavior
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 90
year: '2022'
...
---
_id: '17057'
abstract:
- lang: eng
  text: Martin Loose studied chemistry at the University of Heidelberg, Germany. He
    then joined Petra Schwille's group at the Max Planck Institute of Molecular Cell
    Biology and Genetics in Dresden, where he obtained his PhD degree in 2010 for
    work on self-organization and pattern formation in the bacterial Min protein system.
    He then moved to Tim Mitchison's lab at Harvard Medical School, Boston, USA for
    his postdoc, funded by Human Frontier Science Program (HSFP) and European Molecular
    Biology Organization (EMBO) long-term fellowships; there, he discovered that the
    bacterial cell division proteins FtsA and FtsZ self-organize into dynamic cytoskeletal
    patterns. Martin established his independent research group at the Institute of
    Science and Technology (IST) Austria in 2015, supported by an European Research
    Council (ERC) starting grant and HFSP Young Investigator Grant. His lab studies
    the self-organization of bacterial cell division and small GTPase networks.
article_number: jcs259715
article_processing_charge: No
author:
- first_name: Martin
  full_name: Loose, Martin
  id: 462D4284-F248-11E8-B48F-1D18A9856A87
  last_name: Loose
  orcid: 0000-0001-7309-9724
citation:
  ama: Loose M. <i>Cell Scientist to Watch – Martin Loose</i>. Vol 135. The Company
    of Biologists; 2022. doi:<a href="https://doi.org/10.1242/jcs.259715">10.1242/jcs.259715</a>
  apa: Loose, M. (2022). <i>Cell scientist to watch – Martin Loose</i>. <i>Journal
    of Cell Science</i> (Vol. 135). The Company of Biologists. <a href="https://doi.org/10.1242/jcs.259715">https://doi.org/10.1242/jcs.259715</a>
  chicago: Loose, Martin. <i>Cell Scientist to Watch – Martin Loose</i>. <i>Journal
    of Cell Science</i>. Vol. 135. The Company of Biologists, 2022. <a href="https://doi.org/10.1242/jcs.259715">https://doi.org/10.1242/jcs.259715</a>.
  ieee: M. Loose, <i>Cell scientist to watch – Martin Loose</i>, vol. 135, no. 2.
    The Company of Biologists, 2022.
  ista: Loose M. 2022. Cell scientist to watch – Martin Loose, The Company of Biologists,p.
  mla: Loose, Martin. “Cell Scientist to Watch – Martin Loose.” <i>Journal of Cell
    Science</i>, vol. 135, no. 2, jcs259715, The Company of Biologists, 2022, doi:<a
    href="https://doi.org/10.1242/jcs.259715">10.1242/jcs.259715</a>.
  short: M. Loose, Cell Scientist to Watch – Martin Loose, The Company of Biologists,
    2022.
date_created: 2024-05-28T13:28:30Z
date_published: 2022-01-19T00:00:00Z
date_updated: 2026-06-18T17:51:26Z
day: '19'
ddc:
- '570'
department:
- _id: MaLo
doi: 10.1242/jcs.259715
external_id:
  isi:
  - '000762665200015'
fulldoi: https://doi.org/10.1242/jcs.259715
intvolume: '       135'
isi: 1
issue: '2'
language:
- iso: eng
main_file_link:
- open_access: '1'
  url: https://doi.org/10.1242/jcs.259715
month: '01'
oa: 1
oa_version: Published Version
publication: Journal of Cell Science
publication_identifier:
  eissn:
  - 1477-9137
  issn:
  - 0021-9533
publication_status: published
publisher: The Company of Biologists
quality_controlled: '1'
status: public
title: Cell scientist to watch – Martin Loose
type: other_academic_publication
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 135
year: '2022'
...
---
_id: '17059'
abstract:
- lang: eng
  text: The recent focus on the efficiency of deep neural networks (DNNs) has led
    to significant work on model compression approaches, of which weight pruning is
    one of the most popular. At the same time, there is rapidly-growing computational
    support for efficiently executing the unstructured-sparse models obtained via
    pruning. Yet, most existing pruning methods minimize just the number of remaining
    weights, i.e. the size of the model, rather than optimizing for inference time.
    We address this gap by introducing SPDY, a new compression method which automatically
    determines layer-wise sparsity targets achieving a desired inference speedup on
    a given system, while minimizing accuracy loss. SPDY is the composition of two
    new techniques. The first is an efficient and general dynamic programming algorithm
    for solving constrained layer-wise compression problems, given a set of layer-wise
    error scores. The second technique is a local search procedure for automatically
    determining such scores in an accurate and robust manner. Experiments across popular
    vision and language models show that SPDY guarantees speedups while recovering
    higher accuracy relative to existing strategies, both for one-shot and gradual
    pruning scenarios, and is compatible with most existing pruning approaches. We
    also extend our approach to the recently-proposed task of pruning with very little
    data, where we achieve the best known accuracy recovery when pruning to the GPU-supported
    2:4 sparsity pattern.
acknowledgement: "We gratefully acknowledge funding from the European Research Council
  (ERC) under the European Union’s Horizon 2020 programme (grant agreement No 805223
  ScaleML),\r\nas well as computational support from AWS EC2. We thank Eldar Kurtic
  for code and hyper-parameters for BERT pruning, and the Neural Magic Team, notably
  Michael Goin and\r\nMark Kurtz, for support with their software."
alternative_title:
- PMLR
article_processing_charge: Yes
author:
- first_name: Elias
  full_name: Frantar, Elias
  id: 09a8f98d-ec99-11ea-ae11-c063a7b7fe5f
  last_name: Frantar
- first_name: Dan-Adrian
  full_name: Alistarh, Dan-Adrian
  id: 4A899BFC-F248-11E8-B48F-1D18A9856A87
  last_name: Alistarh
  orcid: 0000-0003-3650-940X
citation:
  ama: 'Frantar E, Alistarh D-A. SPDY: Accurate pruning with speedup guarantees. In:
    <i>39th International Conference on Machine Learning</i>. Vol 162. ML Research
    Press; 2022:6726-6743.'
  apa: 'Frantar, E., &#38; Alistarh, D.-A. (2022). SPDY: Accurate pruning with speedup
    guarantees. In <i>39th International Conference on Machine Learning</i> (Vol.
    162, pp. 6726–6743). Baltimore, MD, United States: ML Research Press.'
  chicago: 'Frantar, Elias, and Dan-Adrian Alistarh. “SPDY: Accurate Pruning with
    Speedup Guarantees.” In <i>39th International Conference on Machine Learning</i>,
    162:6726–43. ML Research Press, 2022.'
  ieee: 'E. Frantar and D.-A. Alistarh, “SPDY: Accurate pruning with speedup guarantees,”
    in <i>39th International Conference on Machine Learning</i>, Baltimore, MD, United
    States, 2022, vol. 162, pp. 6726–6743.'
  ista: 'Frantar E, Alistarh D-A. 2022. SPDY: Accurate pruning with speedup guarantees.
    39th International Conference on Machine Learning. ICML: International Conference
    on Machine Learning, PMLR, vol. 162, 6726–6743.'
  mla: 'Frantar, Elias, and Dan-Adrian Alistarh. “SPDY: Accurate Pruning with Speedup
    Guarantees.” <i>39th International Conference on Machine Learning</i>, vol. 162,
    ML Research Press, 2022, pp. 6726–43.'
  short: E. Frantar, D.-A. Alistarh, in:, 39th International Conference on Machine
    Learning, ML Research Press, 2022, pp. 6726–6743.
conference:
  end_date: 2022-07-23
  location: Baltimore, MD, United States
  name: 'ICML: International Conference on Machine Learning'
  start_date: 2022-07-17
corr_author: '1'
date_created: 2024-05-28T13:45:20Z
date_published: 2022-07-20T00:00:00Z
date_updated: 2025-04-14T07:49:14Z
day: '20'
ddc:
- '000'
department:
- _id: DaAl
ec_funded: 1
external_id:
  isi:
  - '000922378801029'
file:
- access_level: open_access
  checksum: 5179a1e4dfc0fbfab6674907299e414a
  content_type: application/pdf
  creator: dernst
  date_created: 2024-08-19T06:54:41Z
  date_updated: 2024-08-19T06:54:41Z
  file_id: '17440'
  file_name: 2022_PMLR_Frantar.pdf
  file_size: 615916
  relation: main_file
  success: 1
file_date_updated: 2024-08-19T06:54:41Z
has_accepted_license: '1'
intvolume: '       162'
isi: 1
language:
- iso: eng
month: '07'
oa: 1
oa_version: Published Version
page: 6726-6743
project:
- _id: 268A44D6-B435-11E9-9278-68D0E5697425
  call_identifier: H2020
  grant_number: '805223'
  name: Elastic Coordination for Scalable Machine Learning
publication: 39th International Conference on Machine Learning
publication_status: published
publisher: ML Research Press
quality_controlled: '1'
scopus_import: '1'
status: public
title: 'SPDY: Accurate pruning with speedup guarantees'
tmp:
  image: /images/cc_by.png
  legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode
  name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)
  short: CC BY (4.0)
type: conference
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 162
year: '2022'
...
---
_id: '17060'
abstract:
- lang: eng
  text: "Payment channel networks (PCNs) are one of the most prominent solutions to
    the limited transaction throughput of blockchains. Nevertheless, PCNs suffer themselves
    from a throughput limitation due to the capital constraints of their channels.
    A similar dependence on high capital is also found in inter-bank payment settlements,
    where the so-called netting technique is used to mitigate liquidity demands.\r\nIn
    this work, we alleviate this limitation by introducing the notion of transaction
    aggregation: instead of executing transactions sequentially through a PCN, we
    enable senders to aggregate multiple transactions and execute them simultaneously
    to benefit from several amounts that may \"cancel out\". Two direct advantages
    of our proposal is the decrease in intermediary fees paid by senders as well as
    the obfuscation of the transaction data from the intermediaries.\r\nWe formulate
    the transaction aggregation as a computational problem, a generalization of the
    Bank Clearing Problem. We present a generic framework for the transaction aggregation
    execution, and thereafter we propose Wiser as an implementation of this framework
    in a specific hub-based setting. To overcome the NP-hardness of the transaction
    aggregation problem, in Wiser we propose a fixed-parameter linear algorithm for
    a special case of transaction aggregation as well as the Bank Clearing Problem.
    Wiser can also be seen as a modern variant of the Hawala money transfer system,
    as well as a decentralized implementation of the overseas remittance service of
    Wise."
acknowledgement: "This work was supported partially by ERC Starting Grant QIP–805241,
  by the Vienna business agency (Wirtschaftsagentur) through the Vienna Cybersecurity
  and Privacy Research Center\r\n(ViSP) and by the Austrian Science Fund (FWF) project
  I 4800-N (ADVISE).\r\nThe first author would like to thank Daniel Dadush for suggesting
  the use of discrepancy techniques to solve the transaction aggregation problem."
article_processing_charge: Yes (in subscription journal)
arxiv: 1
author:
- first_name: Samarth
  full_name: Tiwari, Samarth
  last_name: Tiwari
- first_name: Michelle X
  full_name: Yeo, Michelle X
  id: 2D82B818-F248-11E8-B48F-1D18A9856A87
  last_name: Yeo
  orcid: 0009-0001-3676-4809
- first_name: Zeta
  full_name: Avarikioti, Zeta
  last_name: Avarikioti
- first_name: Iosif
  full_name: Salem, Iosif
  last_name: Salem
- first_name: Krzysztof Z
  full_name: Pietrzak, Krzysztof Z
  id: 3E04A7AA-F248-11E8-B48F-1D18A9856A87
  last_name: Pietrzak
  orcid: 0000-0002-9139-1654
- first_name: Stefan
  full_name: Schmid, Stefan
  last_name: Schmid
citation:
  ama: 'Tiwari S, Yeo MX, Avarikioti Z, Salem I, Pietrzak KZ, Schmid S. Wiser: Increasing
    throughput in payment channel networks with transaction aggregation. In: <i>Proceedings
    of the 4th ACM Conference on Advances in Financial Technologies</i>. Association
    for Computing Machinery; 2022:217-231. doi:<a href="https://doi.org/10.1145/3558535.3559775">10.1145/3558535.3559775</a>'
  apa: 'Tiwari, S., Yeo, M. X., Avarikioti, Z., Salem, I., Pietrzak, K. Z., &#38;
    Schmid, S. (2022). Wiser: Increasing throughput in payment channel networks with
    transaction aggregation. In <i>Proceedings of the 4th ACM Conference on Advances
    in Financial Technologies</i> (pp. 217–231). Cambridge, MA, United States: Association
    for Computing Machinery. <a href="https://doi.org/10.1145/3558535.3559775">https://doi.org/10.1145/3558535.3559775</a>'
  chicago: 'Tiwari, Samarth, Michelle X Yeo, Zeta Avarikioti, Iosif Salem, Krzysztof
    Z Pietrzak, and Stefan Schmid. “Wiser: Increasing Throughput in Payment Channel
    Networks with Transaction Aggregation.” In <i>Proceedings of the 4th ACM Conference
    on Advances in Financial Technologies</i>, 217–31. Association for Computing Machinery,
    2022. <a href="https://doi.org/10.1145/3558535.3559775">https://doi.org/10.1145/3558535.3559775</a>.'
  ieee: 'S. Tiwari, M. X. Yeo, Z. Avarikioti, I. Salem, K. Z. Pietrzak, and S. Schmid,
    “Wiser: Increasing throughput in payment channel networks with transaction aggregation,”
    in <i>Proceedings of the 4th ACM Conference on Advances in Financial Technologies</i>,
    Cambridge, MA, United States, 2022, pp. 217–231.'
  ista: 'Tiwari S, Yeo MX, Avarikioti Z, Salem I, Pietrzak KZ, Schmid S. 2022. Wiser:
    Increasing throughput in payment channel networks with transaction aggregation.
    Proceedings of the 4th ACM Conference on Advances in Financial Technologies. AFT:
    Conference on Advances in Financial Technologies, 217–231.'
  mla: 'Tiwari, Samarth, et al. “Wiser: Increasing Throughput in Payment Channel Networks
    with Transaction Aggregation.” <i>Proceedings of the 4th ACM Conference on Advances
    in Financial Technologies</i>, Association for Computing Machinery, 2022, pp.
    217–31, doi:<a href="https://doi.org/10.1145/3558535.3559775">10.1145/3558535.3559775</a>.'
  short: S. Tiwari, M.X. Yeo, Z. Avarikioti, I. Salem, K.Z. Pietrzak, S. Schmid, in:,
    Proceedings of the 4th ACM Conference on Advances in Financial Technologies, Association
    for Computing Machinery, 2022, pp. 217–231.
conference:
  end_date: 2022-09-21
  location: Cambridge, MA, United States
  name: 'AFT: Conference on Advances in Financial Technologies'
  start_date: 2022-09-19
date_created: 2024-05-28T13:58:35Z
date_published: 2022-09-19T00:00:00Z
date_updated: 2025-09-10T09:57:48Z
day: '19'
ddc:
- '000'
department:
- _id: KrPi
doi: 10.1145/3558535.3559775
external_id:
  arxiv:
  - '2205.11597'
  isi:
  - '001041852800015'
file:
- access_level: open_access
  checksum: 54a7d405f8e57dba24728599ca63818c
  content_type: application/pdf
  creator: dernst
  date_created: 2024-08-19T06:45:21Z
  date_updated: 2024-08-19T06:45:21Z
  file_id: '17439'
  file_name: 2022_AFT_Tiwari.pdf
  file_size: 574728
  relation: main_file
  success: 1
file_date_updated: 2024-08-19T06:45:21Z
fulldoi: https://doi.org/10.1145/3558535.3559775
has_accepted_license: '1'
isi: 1
language:
- iso: eng
month: '09'
oa: 1
oa_version: Published Version
page: 217-231
publication: Proceedings of the 4th ACM Conference on Advances in Financial Technologies
publication_identifier:
  isbn:
  - '9781450398619'
publication_status: published
publisher: Association for Computing Machinery
quality_controlled: '1'
scopus_import: '1'
status: public
title: 'Wiser: Increasing throughput in payment channel networks with transaction
  aggregation'
tmp:
  image: /images/cc_by.png
  legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode
  name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)
  short: CC BY (4.0)
type: conference
user_id: 317138e5-6ab7-11ef-aa6d-ffef3953e345
year: '2022'
...
---
_id: '17061'
abstract:
- lang: eng
  text: Across many domains of interaction, both natural and artificial, individuals
    use past experience to shape future behaviors. The results of such learning processes
    depend on what individuals wish to maximize. A natural objective is one’s own
    success. However, when two such “selfish” learners interact with each other, the
    outcome can be detrimental to both, especially when there are conflicts of interest.
    Here, we explore how a learner can align incentives with a selfish opponent. Moreover,
    we consider the dynamics that arise when learning rules themselves are subject
    to evolutionary pressure. By combining extensive simulations and analytical techniques,
    we demonstrate that selfish learning is unstable in most classical two-player
    repeated games. If evolution operates on the level of long-run payoffs, selection
    instead favors learning rules that incorporate social (other-regarding) preferences.
    To further corroborate these results, we analyze data from a repeated prisoner’s
    dilemma experiment. We find that selfish learning is insufficient to explain human
    behavior when there is a trade-off between payoff maximization and fairness.
acknowledgement: The authors are grateful to Jörg Oechssler for many helpful comments.
  A.M. was supported by a Simons Postdoctoral Fellowship (Math+X) at the University
  of Pennsylvania; K.C. was supported by the European Research Council Consolidator
  Grant 863818 (ForM-SMArt); and C.H. was supported by the European Research Council
  Starting Grant 850529 (E-DIRECT).
article_number: pgac141
article_processing_charge: Yes
article_type: original
arxiv: 1
author:
- first_name: Alex
  full_name: McAvoy, Alex
  last_name: McAvoy
- first_name: Julian
  full_name: Kates-Harbeck, Julian
  last_name: Kates-Harbeck
- first_name: Krishnendu
  full_name: Chatterjee, Krishnendu
  id: 2E5DCA20-F248-11E8-B48F-1D18A9856A87
  last_name: Chatterjee
  orcid: 0000-0002-4561-241X
- first_name: Christian
  full_name: Hilbe, Christian
  id: 2FDF8F3C-F248-11E8-B48F-1D18A9856A87
  last_name: Hilbe
  orcid: 0000-0001-5116-955X
citation:
  ama: McAvoy A, Kates-Harbeck J, Chatterjee K, Hilbe C. Evolutionary instability
    of selfish learning in repeated games. <i>PNAS Nexus</i>. 2022;1(4). doi:<a href="https://doi.org/10.1093/pnasnexus/pgac141">10.1093/pnasnexus/pgac141</a>
  apa: McAvoy, A., Kates-Harbeck, J., Chatterjee, K., &#38; Hilbe, C. (2022). Evolutionary
    instability of selfish learning in repeated games. <i>PNAS Nexus</i>. Oxford University
    Press. <a href="https://doi.org/10.1093/pnasnexus/pgac141">https://doi.org/10.1093/pnasnexus/pgac141</a>
  chicago: McAvoy, Alex, Julian Kates-Harbeck, Krishnendu Chatterjee, and Christian
    Hilbe. “Evolutionary Instability of Selfish Learning in Repeated Games.” <i>PNAS
    Nexus</i>. Oxford University Press, 2022. <a href="https://doi.org/10.1093/pnasnexus/pgac141">https://doi.org/10.1093/pnasnexus/pgac141</a>.
  ieee: A. McAvoy, J. Kates-Harbeck, K. Chatterjee, and C. Hilbe, “Evolutionary instability
    of selfish learning in repeated games,” <i>PNAS Nexus</i>, vol. 1, no. 4. Oxford
    University Press, 2022.
  ista: McAvoy A, Kates-Harbeck J, Chatterjee K, Hilbe C. 2022. Evolutionary instability
    of selfish learning in repeated games. PNAS Nexus. 1(4), pgac141.
  mla: McAvoy, Alex, et al. “Evolutionary Instability of Selfish Learning in Repeated
    Games.” <i>PNAS Nexus</i>, vol. 1, no. 4, pgac141, Oxford University Press, 2022,
    doi:<a href="https://doi.org/10.1093/pnasnexus/pgac141">10.1093/pnasnexus/pgac141</a>.
  short: A. McAvoy, J. Kates-Harbeck, K. Chatterjee, C. Hilbe, PNAS Nexus 1 (2022).
date_created: 2024-05-28T14:23:12Z
date_published: 2022-09-01T00:00:00Z
date_updated: 2025-06-11T13:54:20Z
day: '01'
ddc:
- '000'
department:
- _id: KrCh
doi: 10.1093/pnasnexus/pgac141
ec_funded: 1
external_id:
  arxiv:
  - '2105.06199'
  pmid:
  - '36714856'
file:
- access_level: open_access
  checksum: 79a8e3e4be7e8a2b407b4efddd65f3f3
  content_type: application/pdf
  creator: dernst
  date_created: 2024-08-06T07:33:30Z
  date_updated: 2024-08-06T07:33:30Z
  file_id: '17400'
  file_name: 2022_PNASNexus_McAvoy.pdf
  file_size: 2410962
  relation: main_file
  success: 1
file_date_updated: 2024-08-06T07:33:30Z
fulldoi: https://doi.org/10.1093/pnasnexus/pgac141
has_accepted_license: '1'
intvolume: '         1'
issue: '4'
language:
- iso: eng
month: '09'
oa: 1
oa_version: Published Version
pmid: 1
project:
- _id: 0599E47C-7A3F-11EA-A408-12923DDC885E
  call_identifier: H2020
  grant_number: '863818'
  name: 'Formal Methods for Stochastic Models: Algorithms and Applications'
publication: PNAS Nexus
publication_identifier:
  issn:
  - 2752-6542
publication_status: published
publisher: Oxford University Press
quality_controlled: '1'
related_material:
  link:
  - relation: software
    url: https://github.com/alexmcavoy/fmtl/
scopus_import: '1'
status: public
title: Evolutionary instability of selfish learning in repeated games
tmp:
  image: /images/cc_by.png
  legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode
  name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)
  short: CC BY (4.0)
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 1
year: '2022'
...
---
_id: '17065'
abstract:
- lang: eng
  text: Past work on optimizing fabrication plans given a carpentry design can provide
    Pareto-optimal plans trading off between material waste, fabrication time, precision,
    and other considerations. However, when developing fabrication plans, experts
    rarely restrict to a single design, instead considering families of design variations,
    sometimes adjusting designs to simplify fabrication. Jointly exploring the design
    and fabrication plan spaces for each design is intractable using current techniques.
    We present a new approach to jointly optimize design and fabrication plans for
    carpentered objects. To make this bi-level optimization tractable, we adapt recent
    work from program synthesis based on equality graphs (e-graphs), which encode
    sets of equivalent programs. Our insight is that subproblems within our bi-level
    problem share significant substructures. By representing both designs and fabrication
    plans in a new bag of parts (BOP) e-graph, we amortize the cost of optimizing
    design components shared among multiple candidates. Even using BOP e-graphs, the
    optimization space grows quickly in practice. Hence, we also show how a feedback-guided
    search strategy dubbed Iterative Contraction and Expansion on E-graphs (ICEE)
    can keep the size of the e-graph manageable and direct the search towards promising
    candidates. We illustrate the advantages of our pipeline through examples from
    the carpentry domain.
acknowledgement: The authors would like to thank anonymous reviewers for their helpful
  feedback; Haomiao Wu for her contribution to the algorithm development in the early
  stage of the project; Elias Baldwin, David Tsay, Alexander Lefort, and Qiyang Tan
  for helping the experiments.
article_number: '32'
article_processing_charge: No
article_type: original
arxiv: 1
author:
- first_name: Haisen
  full_name: Zhao, Haisen
  id: fb7f793a-80d1-11eb-8869-d56e5b2a8ff4
  last_name: Zhao
  orcid: 0000-0002-6389-1045
- first_name: Max
  full_name: Willsey, Max
  last_name: Willsey
- first_name: Amy
  full_name: Zhu, Amy
  last_name: Zhu
- first_name: Chandrakana
  full_name: Nandi, Chandrakana
  last_name: Nandi
- first_name: Zachary
  full_name: Tatlock, Zachary
  last_name: Tatlock
- first_name: Justin
  full_name: Solomon, Justin
  last_name: Solomon
- first_name: Adriana
  full_name: Schulz, Adriana
  last_name: Schulz
citation:
  ama: Zhao H, Willsey M, Zhu A, et al. Co-optimization of design and fabrication
    plans for carpentry. <i>ACM Transactions on Graphics</i>. 2022;41(3). doi:<a href="https://doi.org/10.1145/3508499">10.1145/3508499</a>
  apa: Zhao, H., Willsey, M., Zhu, A., Nandi, C., Tatlock, Z., Solomon, J., &#38;
    Schulz, A. (2022). Co-optimization of design and fabrication plans for carpentry.
    <i>ACM Transactions on Graphics</i>. Association for Computing Machinery. <a href="https://doi.org/10.1145/3508499">https://doi.org/10.1145/3508499</a>
  chicago: Zhao, Haisen, Max Willsey, Amy Zhu, Chandrakana Nandi, Zachary Tatlock,
    Justin Solomon, and Adriana Schulz. “Co-Optimization of Design and Fabrication
    Plans for Carpentry.” <i>ACM Transactions on Graphics</i>. Association for Computing
    Machinery, 2022. <a href="https://doi.org/10.1145/3508499">https://doi.org/10.1145/3508499</a>.
  ieee: H. Zhao <i>et al.</i>, “Co-optimization of design and fabrication plans for
    carpentry,” <i>ACM Transactions on Graphics</i>, vol. 41, no. 3. Association for
    Computing Machinery, 2022.
  ista: Zhao H, Willsey M, Zhu A, Nandi C, Tatlock Z, Solomon J, Schulz A. 2022. Co-optimization
    of design and fabrication plans for carpentry. ACM Transactions on Graphics. 41(3),
    32.
  mla: Zhao, Haisen, et al. “Co-Optimization of Design and Fabrication Plans for Carpentry.”
    <i>ACM Transactions on Graphics</i>, vol. 41, no. 3, 32, Association for Computing
    Machinery, 2022, doi:<a href="https://doi.org/10.1145/3508499">10.1145/3508499</a>.
  short: H. Zhao, M. Willsey, A. Zhu, C. Nandi, Z. Tatlock, J. Solomon, A. Schulz,
    ACM Transactions on Graphics 41 (2022).
date_created: 2024-05-29T06:09:23Z
date_published: 2022-03-09T00:00:00Z
date_updated: 2024-08-06T07:03:14Z
day: '09'
department:
- _id: BeBi
doi: 10.1145/3508499
external_id:
  arxiv:
  - '2107.12265'
fulldoi: https://doi.org/10.1145/3508499
intvolume: '        41'
issue: '3'
language:
- iso: eng
main_file_link:
- open_access: '1'
  url: https://doi.org/10.48550/arXiv.2107.12265
month: '03'
oa: 1
oa_version: Preprint
publication: ACM Transactions on Graphics
publication_identifier:
  eissn:
  - 1557-7368
  issn:
  - 0730-0301
publication_status: published
publisher: Association for Computing Machinery
quality_controlled: '1'
scopus_import: '1'
status: public
title: Co-optimization of design and fabrication plans for carpentry
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 41
year: '2022'
...
---
_id: '17066'
abstract:
- lang: eng
  text: A cell’s size affects the likelihood that it will die. But how is cell size
    controlled in this context and how does cell size impact commitment to the cell
    death fate? We present evidence that the caspase CED-3 interacts with the RhoGEF
    ECT-2 in Caenorhabditis elegans neuroblasts that generate “unwanted” cells. We
    propose that this interaction promotes polar actomyosin contractility, which leads
    to unequal neuroblast division and the generation of a daughter cell that is below
    the critical “lethal” size threshold. Furthermore, we find that hyperactivation
    of ECT-2 RhoGEF reduces the sizes of unwanted cells. Importantly, this suppresses
    the “cell death abnormal” phenotype caused by the partial loss of ced-3 caspase
    and therefore increases the likelihood that unwanted cells die. A putative null
    mutation of ced-3 caspase, however, is not suppressed, which indicates that cell
    size affects CED-3 caspase activation and/or activity. Therefore, we have uncovered
    novel sequential and reciprocal interactions between the apoptosis pathway and
    cell size that impact a cell’s commitment to the cell death fate.
acknowledgement: "We thank members of the Conradt, Lambie, and Hajnal labs for discussions
  and comments on the manuscript. We thank M. Bauer, L. Jocham, N. Lebedeva, and L.
  McGuinness for excellent technical support; A. Hajnal and T. Kohlbrenner (University
  of Zurich, Switzerland) for allele zh135; and H.R. Horvitz (Massachusetts of Technology,
  USA) for plasmid pET-CED-3.\r\nSome strains were provided by the Caenorhabditis
  Genetics Center (CGC), which is funded by NIH Office of Research Infrastructure
  Programs (https://orip.nih.gov/) (P40 OD010440). This work was supported by UCL
  (Capital Equipment Fund, CEF2), a predoctoral fellowship from the China Scholarship
  Council (https://www.csc.edu.cn/) to HW, a predoctoral fellowship from the Studienstiftung
  des Deutschen Volkes (https://www.studienstiftung.de/) to NM, a Wolfson Fellowship
  from the Royal Society (https://royalsociety.org/) to BC (RSWF\\R1\\180008), the
  Deutsche Forschungsgemeinschaft (https://www.dfg.de/en/index.jsp) (ZA619/3-1 and
  ZA619/3-2 to EZ; C0204/10-1 and EXC114 to BC), and the Biotechnology and Biological
  Sciences Research Council (https://bbsrc.ukri.org/) (BB/V007572/1 to BC). "
article_number: e3001786
article_processing_charge: Yes
article_type: original
author:
- first_name: Aditya
  full_name: Sethi, Aditya
  last_name: Sethi
- first_name: Hai
  full_name: Wei, Hai
  last_name: Wei
- first_name: Nikhil
  full_name: Mishra, Nikhil
  id: C4D70E82-1081-11EA-B3ED-9A4C3DDC885E
  last_name: Mishra
  orcid: 0000-0002-6425-5788
- first_name: Ioannis
  full_name: Segos, Ioannis
  last_name: Segos
- first_name: Eric J.
  full_name: Lambie, Eric J.
  last_name: Lambie
- first_name: Esther
  full_name: Zanin, Esther
  last_name: Zanin
- first_name: Barbara
  full_name: Conradt, Barbara
  last_name: Conradt
citation:
  ama: Sethi A, Wei H, Mishra N, et al. A caspase–RhoGEF axis contributes to the cell
    size threshold for apoptotic death in developing Caenorhabditis elegans. <i>PLOS
    Biology</i>. 2022;20(10). doi:<a href="https://doi.org/10.1371/journal.pbio.3001786">10.1371/journal.pbio.3001786</a>
  apa: Sethi, A., Wei, H., Mishra, N., Segos, I., Lambie, E. J., Zanin, E., &#38;
    Conradt, B. (2022). A caspase–RhoGEF axis contributes to the cell size threshold
    for apoptotic death in developing Caenorhabditis elegans. <i>PLOS Biology</i>.
    Public Library of Science. <a href="https://doi.org/10.1371/journal.pbio.3001786">https://doi.org/10.1371/journal.pbio.3001786</a>
  chicago: Sethi, Aditya, Hai Wei, Nikhil Mishra, Ioannis Segos, Eric J. Lambie, Esther
    Zanin, and Barbara Conradt. “A Caspase–RhoGEF Axis Contributes to the Cell Size
    Threshold for Apoptotic Death in Developing Caenorhabditis Elegans.” <i>PLOS Biology</i>.
    Public Library of Science, 2022. <a href="https://doi.org/10.1371/journal.pbio.3001786">https://doi.org/10.1371/journal.pbio.3001786</a>.
  ieee: A. Sethi <i>et al.</i>, “A caspase–RhoGEF axis contributes to the cell size
    threshold for apoptotic death in developing Caenorhabditis elegans,” <i>PLOS Biology</i>,
    vol. 20, no. 10. Public Library of Science, 2022.
  ista: Sethi A, Wei H, Mishra N, Segos I, Lambie EJ, Zanin E, Conradt B. 2022. A
    caspase–RhoGEF axis contributes to the cell size threshold for apoptotic death
    in developing Caenorhabditis elegans. PLOS Biology. 20(10), e3001786.
  mla: Sethi, Aditya, et al. “A Caspase–RhoGEF Axis Contributes to the Cell Size Threshold
    for Apoptotic Death in Developing Caenorhabditis Elegans.” <i>PLOS Biology</i>,
    vol. 20, no. 10, e3001786, Public Library of Science, 2022, doi:<a href="https://doi.org/10.1371/journal.pbio.3001786">10.1371/journal.pbio.3001786</a>.
  short: A. Sethi, H. Wei, N. Mishra, I. Segos, E.J. Lambie, E. Zanin, B. Conradt,
    PLOS Biology 20 (2022).
date_created: 2024-05-29T06:09:34Z
date_published: 2022-10-06T00:00:00Z
date_updated: 2024-08-06T07:08:54Z
day: '06'
ddc:
- '570'
department:
- _id: CaHe
doi: 10.1371/journal.pbio.3001786
external_id:
  pmid:
  - '36201522'
file:
- access_level: open_access
  checksum: a7b46460b7819c196028481cc18a7c85
  content_type: application/pdf
  creator: dernst
  date_created: 2024-08-06T07:07:52Z
  date_updated: 2024-08-06T07:07:52Z
  file_id: '17399'
  file_name: 2022_PlosBio_Sethi.pdf
  file_size: 2515388
  relation: main_file
  success: 1
file_date_updated: 2024-08-06T07:07:52Z
fulldoi: https://doi.org/10.1371/journal.pbio.3001786
has_accepted_license: '1'
intvolume: '        20'
issue: '10'
language:
- iso: eng
month: '10'
oa: 1
oa_version: Published Version
pmid: 1
publication: PLOS Biology
publication_identifier:
  issn:
  - 1545-7885
publication_status: published
publisher: Public Library of Science
quality_controlled: '1'
scopus_import: '1'
status: public
title: A caspase–RhoGEF axis contributes to the cell size threshold for apoptotic
  death in developing Caenorhabditis elegans
tmp:
  image: /images/cc_by.png
  legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode
  name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)
  short: CC BY (4.0)
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 20
year: '2022'
...
---
_id: '17067'
abstract:
- lang: eng
  text: 'Human doublecortin (DCX) mutations are associated with severe brain malformations
    leading to aberrant neuron positioning (heterotopia), intellectual disability
    and epilepsy. DCX is a microtubule-associated protein which plays a key role during
    neurodevelopment in neuronal migration and differentiation. Dcx knockout (KO)
    mice show disorganized hippocampal pyramidal neurons. The CA2/CA3 pyramidal cell
    layer is present as two abnormal layers and disorganized CA3 KO pyramidal neurons
    are also more excitable than wild-type (WT) cells. To further identify abnormalities,
    we characterized Dcx KO hippocampal neurons at subcellular, molecular and ultrastructural
    levels. Severe defects were observed in mitochondria, affecting number and distribution.
    Also, the Golgi apparatus was visibly abnormal, increased in volume and abnormally
    organized. Transcriptome analyses from laser microdissected hippocampal tissue
    at postnatal day 60 (P60) highlighted organelle abnormalities. Ultrastructural
    studies of CA3 cells performed in P60 (young adult) and > 9 months (mature) tissue
    showed that organelle defects are persistent throughout life. Locomotor activity
    and fear memory of young and mature adults were also abnormal: Dcx KO mice consistently
    performed less well than WT littermates, with defects becoming more severe with
    age. Thus, we show that disruption of a neurodevelopmentally-regulated gene can
    lead to permanent organelle anomalies contributing to abnormal adult behavior.'
acknowledgement: "We thank Sylvie Dumont for initial aid with laser microdissection
  and G. Martinez-Lorenzana for experimental help with electron microscopy. We thank
  the animal experimentation facility and cellular and tissue imaging platforms at
  the Institut du Fer à Moulin, supported also by the Région Ile de France and the
  FRC Rotary. The Francis lab was associated with the BioPsy Labex project and the
  Ecole des Neurosciences de Paris Ile-de-France (ENP) network. Our salaries and lab
  were supported by Inserm, the Centre national de la recherche scientifique (CNRS)
  and Sorbonne University. The Francis group obtained the following funding contributing
  to this project: the European Union (EU- HEALTH-2013, DESIRE, N° 60253), the JTC
  2015 Neurodevelopmental Disorders affiliated with the French Agence National de
  la Recherche (for \r\nNEURON8-Full- 815-006 STEM-MCD, to FF), E-Rare-3, the ERA-Net
  for Research on Rare Diseases affiliated with the French ANR (ERARE18-049), the
  European Cooperation on Science and Technology (COST Action CA16118)."
article_number: '105702'
article_processing_charge: Yes
article_type: original
author:
- first_name: Melissa A
  full_name: Stouffer, Melissa A
  id: 4C9372C4-F248-11E8-B48F-1D18A9856A87
  last_name: Stouffer
- first_name: R.
  full_name: Khalaf-Nazzal, R.
  last_name: Khalaf-Nazzal
- first_name: C.
  full_name: Cifuentes-Diaz, C.
  last_name: Cifuentes-Diaz
- first_name: G.
  full_name: Albertini, G.
  last_name: Albertini
- first_name: E.
  full_name: Bandet, E.
  last_name: Bandet
- first_name: G.
  full_name: Grannec, G.
  last_name: Grannec
- first_name: V.
  full_name: Lavilla, V.
  last_name: Lavilla
- first_name: J.-F.
  full_name: Deleuze, J.-F.
  last_name: Deleuze
- first_name: R.
  full_name: Olaso, R.
  last_name: Olaso
- first_name: M.
  full_name: Nosten-Bertrand, M.
  last_name: Nosten-Bertrand
- first_name: F.
  full_name: Francis, F.
  last_name: Francis
citation:
  ama: Stouffer MA, Khalaf-Nazzal R, Cifuentes-Diaz C, et al. Doublecortin mutation
    leads to persistent defects in the Golgi apparatus and mitochondria in adult hippocampal
    pyramidal cells. <i>Neurobiology of Disease</i>. 2022;168. doi:<a href="https://doi.org/10.1016/j.nbd.2022.105702">10.1016/j.nbd.2022.105702</a>
  apa: Stouffer, M. A., Khalaf-Nazzal, R., Cifuentes-Diaz, C., Albertini, G., Bandet,
    E., Grannec, G., … Francis, F. (2022). Doublecortin mutation leads to persistent
    defects in the Golgi apparatus and mitochondria in adult hippocampal pyramidal
    cells. <i>Neurobiology of Disease</i>. Elsevier. <a href="https://doi.org/10.1016/j.nbd.2022.105702">https://doi.org/10.1016/j.nbd.2022.105702</a>
  chicago: Stouffer, Melissa A, R. Khalaf-Nazzal, C. Cifuentes-Diaz, G. Albertini,
    E. Bandet, G. Grannec, V. Lavilla, et al. “Doublecortin Mutation Leads to Persistent
    Defects in the Golgi Apparatus and Mitochondria in Adult Hippocampal Pyramidal
    Cells.” <i>Neurobiology of Disease</i>. Elsevier, 2022. <a href="https://doi.org/10.1016/j.nbd.2022.105702">https://doi.org/10.1016/j.nbd.2022.105702</a>.
  ieee: M. A. Stouffer <i>et al.</i>, “Doublecortin mutation leads to persistent defects
    in the Golgi apparatus and mitochondria in adult hippocampal pyramidal cells,”
    <i>Neurobiology of Disease</i>, vol. 168. Elsevier, 2022.
  ista: Stouffer MA, Khalaf-Nazzal R, Cifuentes-Diaz C, Albertini G, Bandet E, Grannec
    G, Lavilla V, Deleuze J-F, Olaso R, Nosten-Bertrand M, Francis F. 2022. Doublecortin
    mutation leads to persistent defects in the Golgi apparatus and mitochondria in
    adult hippocampal pyramidal cells. Neurobiology of Disease. 168, 105702.
  mla: Stouffer, Melissa A., et al. “Doublecortin Mutation Leads to Persistent Defects
    in the Golgi Apparatus and Mitochondria in Adult Hippocampal Pyramidal Cells.”
    <i>Neurobiology of Disease</i>, vol. 168, 105702, Elsevier, 2022, doi:<a href="https://doi.org/10.1016/j.nbd.2022.105702">10.1016/j.nbd.2022.105702</a>.
  short: M.A. Stouffer, R. Khalaf-Nazzal, C. Cifuentes-Diaz, G. Albertini, E. Bandet,
    G. Grannec, V. Lavilla, J.-F. Deleuze, R. Olaso, M. Nosten-Bertrand, F. Francis,
    Neurobiology of Disease 168 (2022).
date_created: 2024-05-29T06:10:05Z
date_published: 2022-06-15T00:00:00Z
date_updated: 2024-08-06T06:57:39Z
day: '15'
ddc:
- '570'
department:
- _id: SiHi
doi: 10.1016/j.nbd.2022.105702
external_id:
  pmid:
  - '35339680'
file:
- access_level: open_access
  checksum: b705d3d23d0b424ba29920be7ab64c23
  content_type: application/pdf
  creator: dernst
  date_created: 2024-08-06T06:54:24Z
  date_updated: 2024-08-06T06:54:24Z
  file_id: '17398'
  file_name: 2022_NeurobioDisease_Stouffer.pdf
  file_size: 8890818
  relation: main_file
  success: 1
file_date_updated: 2024-08-06T06:54:24Z
fulldoi: https://doi.org/10.1016/j.nbd.2022.105702
has_accepted_license: '1'
intvolume: '       168'
language:
- iso: eng
license: https://creativecommons.org/licenses/by-nc-nd/4.0/
month: '06'
oa: 1
oa_version: Published Version
pmid: 1
publication: Neurobiology of Disease
publication_identifier:
  issn:
  - 0969-9961
publication_status: published
publisher: Elsevier
quality_controlled: '1'
scopus_import: '1'
status: public
title: Doublecortin mutation leads to persistent defects in the Golgi apparatus and
  mitochondria in adult hippocampal pyramidal cells
tmp:
  image: /images/cc_by_nc_nd.png
  legal_code_url: https://creativecommons.org/licenses/by-nc-nd/4.0/legalcode
  name: Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International
    (CC BY-NC-ND 4.0)
  short: CC BY-NC-ND (4.0)
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 168
year: '2022'
...
---
_id: '17068'
abstract:
- lang: eng
  text: In plants, the antagonism between growth and defense is hardwired by hormonal
    signaling. The perception of pathogen-associated molecular patterns (PAMPs) from
    invading microorganisms inhibits auxin signaling and plant growth. Conversely,
    pathogens manipulate auxin signaling to promote disease, but how this hormone
    inhibits immunity is not fully understood. Ustilago maydis is a maize pathogen
    that induces auxin signaling in its host. We characterized a U. maydis effector
    protein, Naked1 (Nkd1), that is translocated into the host nucleus. Through its
    native ethylene-responsive element binding factor-associated amphiphilic repression
    (EAR) motif, Nkd1 binds to the transcriptional co-repressors TOPLESS/TOPLESS-related
    (TPL/TPRs) and prevents the recruitment of a transcriptional repressor involved
    in hormonal signaling, leading to the de-repression of auxin and jasmonate signaling
    and thereby promoting susceptibility to (hemi)biotrophic pathogens. A moderate
    upregulation of auxin signaling inhibits the PAMP-triggered reactive oxygen species
    (ROS) burst, an early defense response. Thus, our findings establish a clear mechanism
    for auxin-induced pathogen susceptibility. Engineered Nkd1 variants with increased
    expression or increased EAR-mediated TPL/TPR binding trigger typical salicylic-acid-mediated
    defense reactions, leading to pathogen resistance. This implies that moderate
    binding of Nkd1 to TPL is a result of a balancing evolutionary selection process
    to enable TPL manipulation while avoiding host recognition.
acknowledgement: "The research leading to these results received funding from the
  European Research Council under the European Union Seventh Framework Programme ERC-2013-STG
  grant agreement \r\n335691; the Austrian Science Fund (FWF) P27818-B22,I 3033-B22;
  the Austrian Academy of Sciences (OEAW); and the Deutsche Forschungsgemeinschaft
  (DFG, German Research Foundation) under Germany’s Excellence Strategy - EXC 2070-390732324.\r\nWe
  would like to thank the GMI/IMBA/IMP core facilities for excellent technical support,
  especially the BioOptics and Molecular Biology Services. We thank the Plant Sciences
  and Next Generation Sequencing Facilities at the Vienna BioCenter Core Facilities
  GmbH (VBCF). We are grateful to the Jirí Friml and Jürgen Kleine-Vehn laboratories
  for providing useful A. thaliana lines. We thank Mathias Madalinski for peptide
  synthesis and Dr. J. Matthew Watson for proofreading and valuable feedback on the
  manuscript. The authors declare no competing interests."
article_number: '100269'
article_processing_charge: Yes
article_type: original
author:
- first_name: Fernando
  full_name: Navarrete, Fernando
  last_name: Navarrete
- first_name: Michelle C
  full_name: Gallei, Michelle C
  id: 35A03822-F248-11E8-B48F-1D18A9856A87
  last_name: Gallei
  orcid: 0000-0003-1286-7368
- first_name: Aleksandra E.
  full_name: Kornienko, Aleksandra E.
  last_name: Kornienko
- first_name: Indira
  full_name: Saado, Indira
  last_name: Saado
- first_name: Mamoona
  full_name: Khan, Mamoona
  last_name: Khan
- first_name: Khong-Sam
  full_name: Chia, Khong-Sam
  last_name: Chia
- first_name: Martin A.
  full_name: Darino, Martin A.
  last_name: Darino
- first_name: Janos
  full_name: Bindics, Janos
  last_name: Bindics
- first_name: Armin
  full_name: Djamei, Armin
  last_name: Djamei
citation:
  ama: Navarrete F, Gallei MC, Kornienko AE, et al. TOPLESS promotes plant immunity
    by repressing auxin signaling and is targeted by the fungal effector Naked1. <i>Plant
    Communications</i>. 2022;3(2). doi:<a href="https://doi.org/10.1016/j.xplc.2021.100269">10.1016/j.xplc.2021.100269</a>
  apa: Navarrete, F., Gallei, M. C., Kornienko, A. E., Saado, I., Khan, M., Chia,
    K.-S., … Djamei, A. (2022). TOPLESS promotes plant immunity by repressing auxin
    signaling and is targeted by the fungal effector Naked1. <i>Plant Communications</i>.
    Elsevier. <a href="https://doi.org/10.1016/j.xplc.2021.100269">https://doi.org/10.1016/j.xplc.2021.100269</a>
  chicago: Navarrete, Fernando, Michelle C Gallei, Aleksandra E. Kornienko, Indira
    Saado, Mamoona Khan, Khong-Sam Chia, Martin A. Darino, Janos Bindics, and Armin
    Djamei. “TOPLESS Promotes Plant Immunity by Repressing Auxin Signaling and Is
    Targeted by the Fungal Effector Naked1.” <i>Plant Communications</i>. Elsevier,
    2022. <a href="https://doi.org/10.1016/j.xplc.2021.100269">https://doi.org/10.1016/j.xplc.2021.100269</a>.
  ieee: F. Navarrete <i>et al.</i>, “TOPLESS promotes plant immunity by repressing
    auxin signaling and is targeted by the fungal effector Naked1,” <i>Plant Communications</i>,
    vol. 3, no. 2. Elsevier, 2022.
  ista: Navarrete F, Gallei MC, Kornienko AE, Saado I, Khan M, Chia K-S, Darino MA,
    Bindics J, Djamei A. 2022. TOPLESS promotes plant immunity by repressing auxin
    signaling and is targeted by the fungal effector Naked1. Plant Communications.
    3(2), 100269.
  mla: Navarrete, Fernando, et al. “TOPLESS Promotes Plant Immunity by Repressing
    Auxin Signaling and Is Targeted by the Fungal Effector Naked1.” <i>Plant Communications</i>,
    vol. 3, no. 2, 100269, Elsevier, 2022, doi:<a href="https://doi.org/10.1016/j.xplc.2021.100269">10.1016/j.xplc.2021.100269</a>.
  short: F. Navarrete, M.C. Gallei, A.E. Kornienko, I. Saado, M. Khan, K.-S. Chia,
    M.A. Darino, J. Bindics, A. Djamei, Plant Communications 3 (2022).
date_created: 2024-05-29T06:10:22Z
date_published: 2022-03-14T00:00:00Z
date_updated: 2024-08-05T10:27:03Z
day: '14'
ddc:
- '580'
department:
- _id: JiFr
doi: 10.1016/j.xplc.2021.100269
external_id:
  pmid:
  - '35529945'
file:
- access_level: open_access
  checksum: 1eeb6ee65419e4aa34627fea6857f343
  content_type: application/pdf
  creator: dernst
  date_created: 2024-08-05T10:26:29Z
  date_updated: 2024-08-05T10:26:29Z
  file_id: '17393'
  file_name: 2022_PlantComm_Navarrete.pdf
  file_size: 3216686
  relation: main_file
  success: 1
file_date_updated: 2024-08-05T10:26:29Z
fulldoi: https://doi.org/10.1016/j.xplc.2021.100269
has_accepted_license: '1'
intvolume: '         3'
issue: '2'
language:
- iso: eng
month: '03'
oa: 1
oa_version: Published Version
pmid: 1
publication: Plant Communications
publication_identifier:
  issn:
  - 2590-3462
publication_status: published
publisher: Elsevier
quality_controlled: '1'
scopus_import: '1'
status: public
title: TOPLESS promotes plant immunity by repressing auxin signaling and is targeted
  by the fungal effector Naked1
tmp:
  image: /images/cc_by_nc_nd.png
  legal_code_url: https://creativecommons.org/licenses/by-nc-nd/4.0/legalcode
  name: Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International
    (CC BY-NC-ND 4.0)
  short: CC BY-NC-ND (4.0)
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 3
year: '2022'
...
