--- _id: '15192' abstract: - lang: eng text: We searched the Gaia DR3 database for ultramassive white dwarfs with kinematics consistent with having escaped the nearby Hyades open cluster, identifying three such candidates. Two of these candidates have masses estimated from Gaia photometry of approximately 1.1 solar masses; their status as products of single-stellar evolution that have escaped the cluster was deemed too questionable for immediate follow-up analysis. The remaining candidate has an expected mass >1.3 solar masses, significantly reducing the probability of it being an interloper. Analysis of follow-up Gemini GMOS spectroscopy for this source reveals a nonmagnetized hydrogen atmosphere white dwarf with a mass and age consistent with having formed from a single star. Assuming a single-stellar-evolution formation channel, we estimate a 97.8% chance that the candidate is a true escapee from the Hyades. With a determined mass of 1.317 solar masses, this is potentially the most massive known single-evolution white dwarf and is by far the most massive with a strong association with an open cluster. article_number: L41 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: Kareem full_name: El-Badry, Kareem last_name: El-Badry - first_name: Antonio C. full_name: Rodriguez, Antonio C. last_name: Rodriguez - first_name: Zachary P. full_name: Vanderbosch, Zachary P. last_name: Vanderbosch - first_name: Jan full_name: van Roestel, Jan last_name: van Roestel citation: ama: Miller DR, Caiazzo I, Heyl J, et al. An extremely massive white dwarf escaped from the Hyades star cluster. The Astrophysical Journal Letters. 2023;956(2). doi:10.3847/2041-8213/acffc4 apa: Miller, D. R., Caiazzo, I., Heyl, J., Richer, H. B., El-Badry, K., Rodriguez, A. C., … van Roestel, J. (2023). An extremely massive white dwarf escaped from the Hyades star cluster. The Astrophysical Journal Letters. American Astronomical Society. https://doi.org/10.3847/2041-8213/acffc4 chicago: Miller, David R., Ilaria Caiazzo, Jeremy Heyl, Harvey B. Richer, Kareem El-Badry, Antonio C. Rodriguez, Zachary P. Vanderbosch, and Jan van Roestel. “An Extremely Massive White Dwarf Escaped from the Hyades Star Cluster.” The Astrophysical Journal Letters. American Astronomical Society, 2023. https://doi.org/10.3847/2041-8213/acffc4. ieee: D. R. Miller et al., “An extremely massive white dwarf escaped from the Hyades star cluster,” The Astrophysical Journal Letters, vol. 956, no. 2. American Astronomical Society, 2023. ista: Miller DR, Caiazzo I, Heyl J, Richer HB, El-Badry K, Rodriguez AC, Vanderbosch ZP, van Roestel J. 2023. An extremely massive white dwarf escaped from the Hyades star cluster. The Astrophysical Journal Letters. 956(2), L41. mla: Miller, David R., et al. “An Extremely Massive White Dwarf Escaped from the Hyades Star Cluster.” The Astrophysical Journal Letters, vol. 956, no. 2, L41, American Astronomical Society, 2023, doi:10.3847/2041-8213/acffc4. short: D.R. Miller, I. Caiazzo, J. Heyl, H.B. Richer, K. El-Badry, A.C. Rodriguez, Z.P. Vanderbosch, J. van Roestel, The Astrophysical Journal Letters 956 (2023). date_created: 2024-03-26T09:45:38Z date_published: 2023-10-19T00:00:00Z date_updated: 2024-04-02T06:56:01Z day: '19' doi: 10.3847/2041-8213/acffc4 extern: '1' external_id: arxiv: - '2310.03204' fulldoi: https://doi.org/10.3847/2041-8213/acffc4 intvolume: ' 956' 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/acffc4 month: '10' 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: An extremely massive white dwarf escaped from the Hyades star 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: 956 year: '2023' ... --- _id: '15196' abstract: - lang: eng text: We report the discovery of ZTF J0127+5258, a compact mass-transferring binary with an orbital period of 13.7 minutes. The system contains a white dwarf accretor, which likely originated as a post–common envelope carbon–oxygen (CO) white dwarf, and a warm donor (Teff,donor = 16,400 ± 1000 K). The donor probably formed during a common envelope phase between the CO white dwarf and an evolving giant that left behind a helium star or white dwarf in a close orbit with the CO white dwarf. We measure gravitational wave–driven orbital inspiral with ∼51σ significance, which yields a joint constraint on the component masses and mass transfer rate. While the accretion disk in the system is dominated by ionized helium emission, the donor exhibits a mixture of hydrogen and helium absorption lines. Phase-resolved spectroscopy yields a donor radial velocity semiamplitude of 771 ± 27 km s−1, and high-speed photometry reveals that the system is eclipsing. We detect a Chandra X-ray counterpart with LX ∼ 3 × 1031 erg s−1. Depending on the mass transfer rate, the system will likely either evolve into a stably mass-transferring helium cataclysmic variable, merge to become an R CrB star, or explode as a Type Ia supernova in the next million years. We predict that the Laser Space Interferometer Antenna (LISA) will detect the source with a signal-to-noise ratio of 24 ± 6 after 4 yr of observations. The system is the first LISA-loud mass-transferring binary with an intrinsically luminous donor, a class of sources that provide the opportunity to leverage the synergy between optical and infrared time domain surveys, X-ray facilities, and gravitational-wave observatories to probe general relativity, accretion physics, and binary evolution. article_number: L1 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: Saul full_name: Rappaport, Saul last_name: Rappaport - first_name: Tin Long full_name: Sunny Wong, Tin Long last_name: Sunny Wong - first_name: Evan B. full_name: Bauer, Evan B. last_name: Bauer - first_name: Lars full_name: Bildsten, Lars last_name: Bildsten - 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: Emma full_name: Chickles, Emma last_name: Chickles - 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: Thomas R. full_name: Marsh, Thomas R. last_name: Marsh - first_name: Melania full_name: Nynka, Melania last_name: Nynka - first_name: Thomas A. full_name: Prince, Thomas A. last_name: Prince - first_name: Robert A. full_name: Simcoe, Robert A. last_name: Simcoe - first_name: Jan full_name: van Roestel, Jan last_name: van Roestel - first_name: Zach full_name: Vanderbosch, Zach last_name: Vanderbosch - first_name: Eric C. full_name: Bellm, Eric C. last_name: Bellm - first_name: Richard G. full_name: Dekany, Richard G. last_name: Dekany - first_name: Andrew J. full_name: Drake, Andrew J. last_name: Drake - first_name: George full_name: Helou, George last_name: Helou - first_name: Frank J. full_name: Masci, Frank J. last_name: Masci - first_name: Jennifer full_name: Milburn, Jennifer last_name: Milburn - first_name: Reed full_name: Riddle, Reed last_name: Riddle - first_name: Ben full_name: Rusholme, Ben last_name: Rusholme - first_name: Roger full_name: Smith, Roger last_name: Smith citation: ama: Burdge KB, El-Badry K, Rappaport S, et al. Orbital decay in an accreting and eclipsing 13.7 minute orbital period binary with a luminous donor. The Astrophysical Journal Letters. 2023;953(1). doi:10.3847/2041-8213/ace7cf apa: Burdge, K. B., El-Badry, K., Rappaport, S., Sunny Wong, T. L., Bauer, E. B., Bildsten, L., … Smith, R. (2023). Orbital decay in an accreting and eclipsing 13.7 minute orbital period binary with a luminous donor. The Astrophysical Journal Letters. American Astronomical Society. https://doi.org/10.3847/2041-8213/ace7cf chicago: Burdge, Kevin B., Kareem El-Badry, Saul Rappaport, Tin Long Sunny Wong, Evan B. Bauer, Lars Bildsten, Ilaria Caiazzo, et al. “Orbital Decay in an Accreting and Eclipsing 13.7 Minute Orbital Period Binary with a Luminous Donor.” The Astrophysical Journal Letters. American Astronomical Society, 2023. https://doi.org/10.3847/2041-8213/ace7cf. ieee: K. B. Burdge et al., “Orbital decay in an accreting and eclipsing 13.7 minute orbital period binary with a luminous donor,” The Astrophysical Journal Letters, vol. 953, no. 1. American Astronomical Society, 2023. ista: Burdge KB, El-Badry K, Rappaport S, Sunny Wong TL, Bauer EB, Bildsten L, Caiazzo I, Chakrabarty D, Chickles E, Graham MJ, Kara E, Kulkarni SR, Marsh TR, Nynka M, Prince TA, Simcoe RA, van Roestel J, Vanderbosch Z, Bellm EC, Dekany RG, Drake AJ, Helou G, Masci FJ, Milburn J, Riddle R, Rusholme B, Smith R. 2023. Orbital decay in an accreting and eclipsing 13.7 minute orbital period binary with a luminous donor. The Astrophysical Journal Letters. 953(1), L1. mla: Burdge, Kevin B., et al. “Orbital Decay in an Accreting and Eclipsing 13.7 Minute Orbital Period Binary with a Luminous Donor.” The Astrophysical Journal Letters, vol. 953, no. 1, L1, American Astronomical Society, 2023, doi:10.3847/2041-8213/ace7cf. short: K.B. Burdge, K. El-Badry, S. Rappaport, T.L. Sunny Wong, E.B. Bauer, L. Bildsten, I. Caiazzo, D. Chakrabarty, E. Chickles, M.J. Graham, E. Kara, S.R. Kulkarni, T.R. Marsh, M. Nynka, T.A. Prince, R.A. Simcoe, J. van Roestel, Z. Vanderbosch, E.C. Bellm, R.G. Dekany, A.J. Drake, G. Helou, F.J. Masci, J. Milburn, R. Riddle, B. Rusholme, R. Smith, The Astrophysical Journal Letters 953 (2023). date_created: 2024-03-26T09:47:22Z date_published: 2023-08-08T00:00:00Z date_updated: 2024-04-02T07:01:46Z day: '08' doi: 10.3847/2041-8213/ace7cf extern: '1' external_id: arxiv: - '2303.13573' fulldoi: https://doi.org/10.3847/2041-8213/ace7cf intvolume: ' 953' issue: '1' 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/ace7cf month: '08' 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: Orbital decay in an accreting and eclipsing 13.7 minute orbital period binary with a luminous donor 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: 953 year: '2023' ... --- _id: '15202' abstract: - lang: eng text: Magnetars are the most strongly magnetized neutron stars, and one of the most promising targets for X-ray polarimetric measurements. We present here the first Imaging X-ray Polarimetry Explorer observation of the magnetar 1RXS J170849.0-400910, jointly analyzed with a new Swift observation and archival NICER data. The total (energy- and phase-integrated) emission in the 2–8 keV energy range is linerarly polarized, at a ∼35% level. The phase-averaged polarization signal shows a marked increase with energy, ranging from ∼20% at 2–3 keV up to ∼80% at 6–8 keV, while the polarization angle remains constant. This indicates that radiation is mostly polarized in a single direction. The spectrum is well reproduced by a combination of either two thermal (blackbody) components or a blackbody and a power law. Both the polarization degree and angle also show a variation with the spin phase, and the former is almost anticorrelated with the source counts in the 2–8 and 2–4 keV bands. We discuss the possible implications and interpretations, based on a joint analysis of the spectral, polarization, and pulsation properties of the source. A scenario in which the surface temperature is not homogeneous, with a hotter cap covered by a gaseous atmosphere and a warmer region in a condensed state, provides a satisfactory description of both the phase- and energy-dependent spectro-polarimetric data. The (comparatively) small size of the two emitting regions, required to explain the observed pulsations, does not allow to reach a robust conclusion about the presence of vacuum birefringence effects. article_number: L27 article_processing_charge: No article_type: original arxiv: 1 author: - first_name: Silvia full_name: Zane, Silvia last_name: Zane - first_name: Roberto full_name: Taverna, Roberto last_name: Taverna - first_name: Denis full_name: González–Caniulef, Denis last_name: González–Caniulef - first_name: Fabio full_name: Muleri, Fabio last_name: Muleri - first_name: Roberto full_name: Turolla, Roberto last_name: Turolla - first_name: Jeremy full_name: Heyl, Jeremy last_name: Heyl - first_name: Keisuke full_name: Uchiyama, Keisuke last_name: Uchiyama - first_name: Mason full_name: Ng, Mason last_name: Ng - first_name: Toru full_name: Tamagawa, Toru last_name: Tamagawa - 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: Herman L. full_name: Marshall, Herman L. last_name: Marshall - first_name: Matteo full_name: Bachetti, Matteo last_name: Bachetti - first_name: Fabio full_name: La Monaca, Fabio last_name: La Monaca - first_name: Ephraim full_name: Gau, Ephraim last_name: Gau - first_name: Alessandro full_name: Di Marco, Alessandro last_name: Di Marco - first_name: Luca full_name: Baldini, Luca last_name: Baldini - first_name: Michela full_name: Negro, Michela last_name: Negro - first_name: Nicola full_name: Omodei, Nicola last_name: Omodei - first_name: John full_name: Rankin, John last_name: Rankin - first_name: Giorgio full_name: Matt, Giorgio last_name: Matt - first_name: George G. full_name: Pavlov, George G. last_name: Pavlov - first_name: Takao full_name: Kitaguchi, Takao last_name: Kitaguchi - first_name: Henric full_name: Krawczynski, Henric last_name: Krawczynski - first_name: Fabian full_name: Kislat, Fabian last_name: Kislat - first_name: Ruth full_name: Kelly, Ruth last_name: Kelly - first_name: Iván full_name: Agudo, Iván 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: Chieng-Ting full_name: Chen, Chieng-Ting last_name: Chen - 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: Immacolata full_name: Donnarumma, Immacolata last_name: Donnarumma - first_name: Victor full_name: Doroshenko, Victor last_name: Doroshenko - 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: Philip full_name: Kaaret, Philip last_name: Kaaret - first_name: Vladimir full_name: Karas, Vladimir last_name: Karas - first_name: Jeffery J. full_name: Kolodziejczak, Jeffery J. last_name: Kolodziejczak - 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: Francesco full_name: Massaro, Francesco last_name: Massaro - first_name: Ikuyuki full_name: Mitsuishi, Ikuyuki last_name: Mitsuishi - first_name: Tsunefumi full_name: Mizuno, Tsunefumi last_name: Mizuno - first_name: C.-Y. full_name: Ng, 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: 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: Pierre-Olivier full_name: Petrucci, Pierre-Olivier last_name: Petrucci - first_name: Maura full_name: Pilia, Maura last_name: Pilia - first_name: Andrea full_name: Possenti, Andrea last_name: Possenti - 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: Oliver J. full_name: Roberts, Oliver J. last_name: Roberts - first_name: Roger W. full_name: Romani, Roger W. last_name: Romani - first_name: Carmelo full_name: Sgró, Carmelo last_name: Sgró - 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: Douglas A. full_name: Swartz, Douglas A. last_name: Swartz - 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: Martin C. full_name: Weisskopf, Martin C. last_name: Weisskopf - first_name: Kinwah full_name: Wu, Kinwah last_name: Wu - first_name: Fei full_name: Xie, Fei last_name: Xie citation: ama: Zane S, Taverna R, González–Caniulef D, et al. A strong x-ray polarization signal from the magnetar 1RXS J170849.0-400910. The Astrophysical Journal Letters. 2023;944(2). doi:10.3847/2041-8213/acb703 apa: Zane, S., Taverna, R., González–Caniulef, D., Muleri, F., Turolla, R., Heyl, J., … Xie, F. (2023). A strong x-ray polarization signal from the magnetar 1RXS J170849.0-400910. The Astrophysical Journal Letters. American Astronomical Society. https://doi.org/10.3847/2041-8213/acb703 chicago: Zane, Silvia, Roberto Taverna, Denis González–Caniulef, Fabio Muleri, Roberto Turolla, Jeremy Heyl, Keisuke Uchiyama, et al. “A Strong X-Ray Polarization Signal from the Magnetar 1RXS J170849.0-400910.” The Astrophysical Journal Letters. American Astronomical Society, 2023. https://doi.org/10.3847/2041-8213/acb703. ieee: S. Zane et al., “A strong x-ray polarization signal from the magnetar 1RXS J170849.0-400910,” The Astrophysical Journal Letters, vol. 944, no. 2. American Astronomical Society, 2023. ista: Zane S et al. 2023. A strong x-ray polarization signal from the magnetar 1RXS J170849.0-400910. The Astrophysical Journal Letters. 944(2), L27. mla: Zane, Silvia, et al. “A Strong X-Ray Polarization Signal from the Magnetar 1RXS J170849.0-400910.” The Astrophysical Journal Letters, vol. 944, no. 2, L27, American Astronomical Society, 2023, doi:10.3847/2041-8213/acb703. short: S. Zane, R. Taverna, D. González–Caniulef, F. Muleri, R. Turolla, J. Heyl, K. Uchiyama, M. Ng, T. Tamagawa, I. Caiazzo, N. Di Lalla, H.L. Marshall, M. Bachetti, F. La Monaca, E. Gau, A. Di Marco, L. Baldini, M. Negro, N. Omodei, J. Rankin, G. Matt, G.G. Pavlov, T. Kitaguchi, H. Krawczynski, F. Kislat, R. Kelly, 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, C.-T. Chen, S. Ciprini, E. Costa, A. De Rosa, E. Del Monte, L. Di Gesu, I. Donnarumma, V. Doroshenko, 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, P. Kaaret, V. Karas, J.J. Kolodziejczak, L. Latronico, I. Liodakis, S. Maldera, A. Manfreda, F. Marin, A. Marinucci, A.P. Marscher, F. Massaro, I. Mitsuishi, T. Mizuno, C.-Y. Ng, S.L. O’Dell, C. Oppedisano, A. Papitto, A.L. Peirson, M. Perri, M. Pesce-Rollins, P.-O. Petrucci, M. Pilia, A. Possenti, J. Poutanen, S. Puccetti, B.D. Ramsey, A. Ratheesh, O.J. Roberts, R.W. Romani, C. Sgró, P. Slane, P. Soffitta, G. Spandre, D.A. Swartz, F. Tavecchio, Y. Tawara, A.F. Tennant, N.E. Thomas, F. Tombesi, A. Trois, S.S. Tsygankov, J. Vink, M.C. Weisskopf, K. Wu, F. Xie, The Astrophysical Journal Letters 944 (2023). date_created: 2024-03-26T09:50:12Z date_published: 2023-02-15T00:00:00Z date_updated: 2024-04-02T07:15:41Z day: '15' doi: 10.3847/2041-8213/acb703 extern: '1' external_id: arxiv: - '2301.12919' fulldoi: https://doi.org/10.3847/2041-8213/acb703 intvolume: ' 944' 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/acb703 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: A strong x-ray polarization signal from the magnetar 1RXS J170849.0-400910 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: 944 year: '2023' ... --- _id: '17507' abstract: - lang: eng text: Stellar-mass black holes (BHs) are predicted to be embedded in the disks of active galactic nuclei (AGNs) due to gravitational drag and in situ star formation. However, clear evidence for AGN disk-embedded BHs is currently lacking. Here, as possible electromagnetic signatures of these BHs, we investigate breakout emission from shocks emerging around Blandford–Znajek jets launched from accreting BHs in AGN disks. We assume that most of the highly super-Eddington flow reaches the BH and produces a strong jet, and the jet produces feedback that shuts off accretion and thus leads to episodic flaring. These assumptions, while poorly understood at present, yield observable consequences that can probe the presence of AGN-embedded BHs as well as the accretion process itself. They predict a breakout emission characterized by luminous thermal emission in the X-ray bands and bright broadband nonthermal emission from the infrared to the gamma-ray bands. The flare duration depends on the BH's distance r from the central supermassive BH, varying between 103–106 s for r ∼ 0.01–1 pc. This emission can be discovered by current and future infrared, optical, and X-ray wide-field surveys and monitoring campaigns of nearby AGNs. article_number: L3 article_processing_charge: No article_type: original author: - first_name: Hiromichi full_name: Tagawa, Hiromichi last_name: Tagawa - first_name: Shigeo S. full_name: Kimura, Shigeo S. last_name: Kimura - first_name: Zoltán full_name: Haiman, Zoltán id: 7c006e8c-cc0d-11ee-8322-cb904ef76f36 last_name: Haiman - first_name: Rosalba full_name: Perna, Rosalba last_name: Perna - first_name: Imre full_name: Bartos, Imre last_name: Bartos citation: ama: Tagawa H, Kimura SS, Haiman Z, Perna R, Bartos I. Observable signatures of stellar-mass black holes in active galactic nuclei. The Astrophysical Journal Letters. 2023;946(1). doi:10.3847/2041-8213/acc103 apa: Tagawa, H., Kimura, S. S., Haiman, Z., Perna, R., & Bartos, I. (2023). Observable signatures of stellar-mass black holes in active galactic nuclei. The Astrophysical Journal Letters. American Astronomical Society. https://doi.org/10.3847/2041-8213/acc103 chicago: Tagawa, Hiromichi, Shigeo S. Kimura, Zoltán Haiman, Rosalba Perna, and Imre Bartos. “Observable Signatures of Stellar-Mass Black Holes in Active Galactic Nuclei.” The Astrophysical Journal Letters. American Astronomical Society, 2023. https://doi.org/10.3847/2041-8213/acc103. ieee: H. Tagawa, S. S. Kimura, Z. Haiman, R. Perna, and I. Bartos, “Observable signatures of stellar-mass black holes in active galactic nuclei,” The Astrophysical Journal Letters, vol. 946, no. 1. American Astronomical Society, 2023. ista: Tagawa H, Kimura SS, Haiman Z, Perna R, Bartos I. 2023. Observable signatures of stellar-mass black holes in active galactic nuclei. The Astrophysical Journal Letters. 946(1), L3. mla: Tagawa, Hiromichi, et al. “Observable Signatures of Stellar-Mass Black Holes in Active Galactic Nuclei.” The Astrophysical Journal Letters, vol. 946, no. 1, L3, American Astronomical Society, 2023, doi:10.3847/2041-8213/acc103. short: H. Tagawa, S.S. Kimura, Z. Haiman, R. Perna, I. Bartos, The Astrophysical Journal Letters 946 (2023). date_created: 2024-09-05T08:44:27Z date_published: 2023-03-21T00:00:00Z date_updated: 2024-09-10T10:52:04Z day: '21' doi: 10.3847/2041-8213/acc103 extern: '1' fulldoi: https://doi.org/10.3847/2041-8213/acc103 intvolume: ' 946' issue: '1' language: - iso: eng main_file_link: - open_access: '1' url: https://doi.org/10.3847/2041-8213/acc103 month: '03' oa: 1 oa_version: Published Version publication: The Astrophysical Journal Letters publication_identifier: issn: - 2041-8205 - 2041-8213 publication_status: published publisher: American Astronomical Society quality_controlled: '1' scopus_import: '1' status: public title: Observable signatures of stellar-mass black holes in active galactic nuclei type: journal_article user_id: 317138e5-6ab7-11ef-aa6d-ffef3953e345 volume: 946 year: '2023' ... --- _id: '17513' abstract: - lang: eng text: The astrophysical origin of over 90 compact binary mergers discovered by the LIGO and Virgo gravitational wave observatories is an open question. While the unusual mass and spin of some of the discovered objects constrain progenitor scenarios, the observed mergers are consistent with multiple interpretations. A promising approach to solve this question is to consider the observed distributions of binary properties and compare them to expectations from different origin scenarios. Here we describe a new hierarchical population analysis framework to assess the relative contribution of different formation channels simultaneously. For this study we considered binary formation in active galactic nucleus (AGN) disks along with phenomenological models, but the same framework can be extended to other models. We find that high-mass and high-mass-ratio binaries appear more likely to have an AGN origin compared to having the same origin as lower-mass events. Future observations of high-mass black hole mergers could further disentangle the AGN component from other channels. article_number: L29 article_processing_charge: No article_type: original author: - first_name: V. full_name: Gayathri, V. last_name: Gayathri - first_name: Daniel full_name: Wysocki, Daniel last_name: Wysocki - first_name: Y. full_name: Yang, Y. last_name: Yang - first_name: Vera full_name: Delfavero, Vera last_name: Delfavero - first_name: R. full_name: O’Shaughnessy, R. last_name: O’Shaughnessy - first_name: Zoltán full_name: Haiman, Zoltán id: 7c006e8c-cc0d-11ee-8322-cb904ef76f36 last_name: Haiman - first_name: H. full_name: Tagawa, H. last_name: Tagawa - first_name: I. full_name: Bartos, I. last_name: Bartos citation: ama: 'Gayathri V, Wysocki D, Yang Y, et al. Gravitational wave source populations: Disentangling an AGN component. The Astrophysical Journal Letters. 2023;945(2). doi:10.3847/2041-8213/acbfb8' apa: 'Gayathri, V., Wysocki, D., Yang, Y., Delfavero, V., O’Shaughnessy, R., Haiman, Z., … Bartos, I. (2023). Gravitational wave source populations: Disentangling an AGN component. The Astrophysical Journal Letters. American Astronomical Society. https://doi.org/10.3847/2041-8213/acbfb8' chicago: 'Gayathri, V., Daniel Wysocki, Y. Yang, Vera Delfavero, R. O’Shaughnessy, Zoltán Haiman, H. Tagawa, and I. Bartos. “Gravitational Wave Source Populations: Disentangling an AGN Component.” The Astrophysical Journal Letters. American Astronomical Society, 2023. https://doi.org/10.3847/2041-8213/acbfb8.' ieee: 'V. Gayathri et al., “Gravitational wave source populations: Disentangling an AGN component,” The Astrophysical Journal Letters, vol. 945, no. 2. American Astronomical Society, 2023.' ista: 'Gayathri V, Wysocki D, Yang Y, Delfavero V, O’Shaughnessy R, Haiman Z, Tagawa H, Bartos I. 2023. Gravitational wave source populations: Disentangling an AGN component. The Astrophysical Journal Letters. 945(2), L29.' mla: 'Gayathri, V., et al. “Gravitational Wave Source Populations: Disentangling an AGN Component.” The Astrophysical Journal Letters, vol. 945, no. 2, L29, American Astronomical Society, 2023, doi:10.3847/2041-8213/acbfb8.' short: V. Gayathri, D. Wysocki, Y. Yang, V. Delfavero, R. O’Shaughnessy, Z. Haiman, H. Tagawa, I. Bartos, The Astrophysical Journal Letters 945 (2023). date_created: 2024-09-05T08:52:25Z date_published: 2023-03-13T00:00:00Z date_updated: 2024-09-10T13:31:17Z day: '13' doi: 10.3847/2041-8213/acbfb8 extern: '1' fulldoi: https://doi.org/10.3847/2041-8213/acbfb8 intvolume: ' 945' issue: '2' language: - iso: eng main_file_link: - open_access: '1' url: https://doi.org/10.3847/2041-8213/acbfb8 month: '03' oa: 1 oa_version: Published Version publication: The Astrophysical Journal Letters publication_identifier: issn: - 2041-8205 - 2041-8213 publication_status: published publisher: American Astronomical Society quality_controlled: '1' scopus_import: '1' status: public title: 'Gravitational wave source populations: Disentangling an AGN component' type: journal_article user_id: 317138e5-6ab7-11ef-aa6d-ffef3953e345 volume: 945 year: '2023' ... --- _id: '17514' abstract: - lang: eng text: Extreme mass-ratio inspirals (EMRIs) take place when a stellar-mass black hole (BH) merges with a supermassive BH (SMBH). The gravitational-wave emission from such an event is expected to be detectable by the future Laser Interferometer Space Antenna (LISA) and other millihertz detectors. It was recently suggested that the EMRI rate in SMBH binary systems is orders of magnitude higher than the EMRI rate around a single SMBH with the same total mass. Here we show that this high rate can produce thousands of SMBH–BH sources at a redshift of unity. We predict that LISA may detect a few hundred of these EMRIs with signal-to-noise ratio above S/N ≥8 within a 4 yr mission lifetime. The remaining subthreshold sources will contribute to a large confusion noise, which is approximately an order of magnitude above LISA’s sensitivity level. Finally, we suggest that the individually detectable systems, as well as the background noise from the subthreshold EMRIs, can be used to constrain the SMBH binary fraction in the low-redshift Universe. article_number: L27 article_processing_charge: No article_type: original author: - first_name: Smadar full_name: Naoz, Smadar last_name: Naoz - first_name: Zoltán full_name: Haiman, Zoltán id: 7c006e8c-cc0d-11ee-8322-cb904ef76f36 last_name: Haiman citation: ama: Naoz S, Haiman Z. The enhanced population of extreme mass-ratio inspirals in the LISA band from supermassive black hole binaries. The Astrophysical Journal Letters. 2023;955(2). doi:10.3847/2041-8213/acf8c9 apa: Naoz, S., & Haiman, Z. (2023). The enhanced population of extreme mass-ratio inspirals in the LISA band from supermassive black hole binaries. The Astrophysical Journal Letters. American Astronomical Society. https://doi.org/10.3847/2041-8213/acf8c9 chicago: Naoz, Smadar, and Zoltán Haiman. “The Enhanced Population of Extreme Mass-Ratio Inspirals in the LISA Band from Supermassive Black Hole Binaries.” The Astrophysical Journal Letters. American Astronomical Society, 2023. https://doi.org/10.3847/2041-8213/acf8c9. ieee: S. Naoz and Z. Haiman, “The enhanced population of extreme mass-ratio inspirals in the LISA band from supermassive black hole binaries,” The Astrophysical Journal Letters, vol. 955, no. 2. American Astronomical Society, 2023. ista: Naoz S, Haiman Z. 2023. The enhanced population of extreme mass-ratio inspirals in the LISA band from supermassive black hole binaries. The Astrophysical Journal Letters. 955(2), L27. mla: Naoz, Smadar, and Zoltán Haiman. “The Enhanced Population of Extreme Mass-Ratio Inspirals in the LISA Band from Supermassive Black Hole Binaries.” The Astrophysical Journal Letters, vol. 955, no. 2, L27, American Astronomical Society, 2023, doi:10.3847/2041-8213/acf8c9. short: S. Naoz, Z. Haiman, The Astrophysical Journal Letters 955 (2023). date_created: 2024-09-05T08:53:23Z date_published: 2023-09-26T00:00:00Z date_updated: 2024-09-10T13:38:53Z day: '26' doi: 10.3847/2041-8213/acf8c9 extern: '1' fulldoi: https://doi.org/10.3847/2041-8213/acf8c9 intvolume: ' 955' issue: '2' language: - iso: eng main_file_link: - open_access: '1' url: https://doi.org/10.3847/2041-8213/acf8c9 month: '09' oa: 1 oa_version: Published Version publication: The Astrophysical Journal Letters publication_identifier: issn: - 2041-8205 - 2041-8213 publication_status: published publisher: American Astronomical Society quality_controlled: '1' scopus_import: '1' status: public title: The enhanced population of extreme mass-ratio inspirals in the LISA band from supermassive black hole binaries type: journal_article user_id: 317138e5-6ab7-11ef-aa6d-ffef3953e345 volume: 955 year: '2023' ... --- _id: '17549' abstract: - lang: eng text: Studies of rest-frame optical emission in quasars at z>6 have historically been limited by the wavelengths accessible by ground-based telescopes. The James Webb Space Telescope (JWST) now offers the opportunity to probe this emission deep into the reionization epoch. We report the observations of eight quasars at z>6.5 using the JWST/NIRCam Wide Field Slitless Spectroscopy, as a part of the ''A SPectroscopic survey of biased halos In the Reionization Era (ASPIRE)" program. Our JWST spectra cover the quasars' emission between rest frame ∼ 4100 and 5100 Å. The profiles of these quasars' broad Hβ emission lines span a FWHM from 3000 to 6000 km s−1. The Hβ-based virial black hole (BH) masses, ranging from 0.6 to 2.1 billion solar masses, are generally consistent with their MgII-based BH masses. The new measurements based on the more reliable Hβ tracer thus confirm the existence of billion solar-mass BHs in the reionization epoch. In the observed [OIII] λλ4960,5008 doublets of these luminous quasars, broad components are more common than narrow core components (≤ 1200 km s−1), and only one quasar shows stronger narrow components than broad. Two quasars exhibit significantly broad and blueshifted [OIII] emission, thought to trace galactic-scale outflows, with median velocities of −610 km s−1 and −1430 km s−1 relative to the [CII] 158μm line. All eight quasars show strong optical FeII emission, and follow the Eigenvector 1 relations defined by low-redshift quasars. The entire ASPIRE program will eventually cover 25 quasars and provide a statistical sample for the studies of the BHs and quasar spectral properties. article_number: L5 article_processing_charge: No article_type: original author: - first_name: Jinyi full_name: Yang, Jinyi last_name: Yang - first_name: Feige full_name: Wang, Feige last_name: Wang - first_name: Xiaohui full_name: Fan, Xiaohui last_name: Fan - first_name: Joseph F. full_name: Hennawi, Joseph F. last_name: Hennawi - first_name: Aaron J. full_name: Barth, Aaron J. last_name: Barth - first_name: Eduardo full_name: Bañados, Eduardo last_name: Bañados - first_name: Fengwu full_name: Sun, Fengwu last_name: Sun - first_name: Weizhe full_name: Liu, Weizhe last_name: Liu - first_name: Zheng full_name: Cai, Zheng last_name: Cai - first_name: Linhua full_name: Jiang, Linhua last_name: Jiang - first_name: Zihao full_name: Li, Zihao last_name: Li - first_name: Masafusa full_name: Onoue, Masafusa last_name: Onoue - first_name: Jan-Torge full_name: Schindler, Jan-Torge last_name: Schindler - first_name: Yue full_name: Shen, Yue last_name: Shen - first_name: Yunjing full_name: Wu, Yunjing last_name: Wu - first_name: Aklant K. full_name: Bhowmick, Aklant K. last_name: Bhowmick - first_name: Rebekka full_name: Bieri, Rebekka last_name: Bieri - first_name: Laura full_name: Blecha, Laura last_name: Blecha - first_name: Sarah full_name: Bosman, Sarah last_name: Bosman - first_name: Jaclyn B. full_name: Champagne, Jaclyn B. last_name: Champagne - first_name: Luis full_name: Colina, Luis last_name: Colina - first_name: Thomas full_name: Connor, Thomas last_name: Connor - first_name: Tiago full_name: Costa, Tiago last_name: Costa - first_name: Frederick B. full_name: Davies, Frederick B. last_name: Davies - first_name: Roberto full_name: Decarli, Roberto last_name: Decarli - first_name: Gisella full_name: De Rosa, Gisella last_name: De Rosa - first_name: Alyssa B. full_name: Drake, Alyssa B. last_name: Drake - first_name: Eiichi full_name: Egami, Eiichi last_name: Egami - first_name: Anna-Christina full_name: Eilers, Anna-Christina last_name: Eilers - first_name: Analis E. full_name: Evans, Analis E. last_name: Evans - first_name: Emanuele Paolo full_name: Farina, Emanuele Paolo last_name: Farina - first_name: Melanie full_name: Habouzit, Melanie last_name: Habouzit - first_name: Zoltán full_name: Haiman, Zoltán id: 7c006e8c-cc0d-11ee-8322-cb904ef76f36 last_name: Haiman - first_name: Xiangyu full_name: Jin, Xiangyu last_name: Jin - first_name: Hyunsung D. full_name: Jun, Hyunsung D. last_name: Jun - first_name: Koki full_name: Kakiichi, Koki last_name: Kakiichi - first_name: Yana full_name: Khusanova, Yana last_name: Khusanova - first_name: Girish full_name: Kulkarni, Girish last_name: Kulkarni - first_name: Federica full_name: Loiacono, Federica last_name: Loiacono - first_name: Alessandro full_name: Lupi, Alessandro last_name: Lupi - first_name: Chiara full_name: Mazzucchelli, Chiara last_name: Mazzucchelli - first_name: Zhiwei full_name: Pan, Zhiwei last_name: Pan - first_name: Sofía full_name: Rojas-Ruiz, Sofía last_name: Rojas-Ruiz - first_name: Michael A. full_name: Strauss, Michael A. last_name: Strauss - first_name: Wei Leong full_name: Tee, Wei Leong last_name: Tee - first_name: Benny full_name: Trakhtenbrot, Benny last_name: Trakhtenbrot - first_name: Maxime full_name: Trebitsch, Maxime last_name: Trebitsch - first_name: Bram full_name: Venemans, Bram last_name: Venemans - first_name: Marianne full_name: Vestergaard, Marianne last_name: Vestergaard - first_name: Marta full_name: Volonteri, Marta last_name: Volonteri - first_name: Fabian full_name: Walter, Fabian last_name: Walter - first_name: Zhang-Liang full_name: Xie, Zhang-Liang last_name: Xie - first_name: Minghao full_name: Yue, Minghao last_name: Yue - first_name: Haowen full_name: Zhang, Haowen last_name: Zhang - first_name: Huanian full_name: Zhang, Huanian last_name: Zhang - first_name: Siwei full_name: Zou, Siwei last_name: Zou citation: ama: 'Yang J, Wang F, Fan X, et al. A SPectroscopic survey of biased halos in the reionization Era (ASPIRE): A first look at the rest-frame optical spectra of > 6.5 quasars using JWST. The Astrophysical Journal Letters. 2023;951(1). doi:10.3847/2041-8213/acc9c8' apa: 'Yang, J., Wang, F., Fan, X., Hennawi, J. F., Barth, A. J., Bañados, E., … Zou, S. (2023). A SPectroscopic survey of biased halos in the reionization Era (ASPIRE): A first look at the rest-frame optical spectra of > 6.5 quasars using JWST. The Astrophysical Journal Letters. American Astronomical Society. https://doi.org/10.3847/2041-8213/acc9c8' chicago: 'Yang, Jinyi, Feige Wang, Xiaohui Fan, Joseph F. Hennawi, Aaron J. Barth, Eduardo Bañados, Fengwu Sun, et al. “A SPectroscopic Survey of Biased Halos in the Reionization Era (ASPIRE): A First Look at the Rest-Frame Optical Spectra of > 6.5 Quasars Using JWST.” The Astrophysical Journal Letters. American Astronomical Society, 2023. https://doi.org/10.3847/2041-8213/acc9c8.' ieee: 'J. Yang et al., “A SPectroscopic survey of biased halos in the reionization Era (ASPIRE): A first look at the rest-frame optical spectra of > 6.5 quasars using JWST,” The Astrophysical Journal Letters, vol. 951, no. 1. American Astronomical Society, 2023.' ista: 'Yang J, Wang F, Fan X, Hennawi JF, Barth AJ, Bañados E, Sun F, Liu W, Cai Z, Jiang L, Li Z, Onoue M, Schindler J-T, Shen Y, Wu Y, Bhowmick AK, Bieri R, Blecha L, Bosman S, Champagne JB, Colina L, Connor T, Costa T, Davies FB, Decarli R, De Rosa G, Drake AB, Egami E, Eilers A-C, Evans AE, Farina EP, Habouzit M, Haiman Z, Jin X, Jun HD, Kakiichi K, Khusanova Y, Kulkarni G, Loiacono F, Lupi A, Mazzucchelli C, Pan Z, Rojas-Ruiz S, Strauss MA, Tee WL, Trakhtenbrot B, Trebitsch M, Venemans B, Vestergaard M, Volonteri M, Walter F, Xie Z-L, Yue M, Zhang H, Zhang H, Zou S. 2023. A SPectroscopic survey of biased halos in the reionization Era (ASPIRE): A first look at the rest-frame optical spectra of > 6.5 quasars using JWST. The Astrophysical Journal Letters. 951(1), L5.' mla: 'Yang, Jinyi, et al. “A SPectroscopic Survey of Biased Halos in the Reionization Era (ASPIRE): A First Look at the Rest-Frame Optical Spectra of > 6.5 Quasars Using JWST.” The Astrophysical Journal Letters, vol. 951, no. 1, L5, American Astronomical Society, 2023, doi:10.3847/2041-8213/acc9c8.' short: J. Yang, F. Wang, X. Fan, J.F. Hennawi, A.J. Barth, E. Bañados, F. Sun, W. Liu, Z. Cai, L. Jiang, Z. Li, M. Onoue, J.-T. Schindler, Y. Shen, Y. Wu, A.K. Bhowmick, R. Bieri, L. Blecha, S. Bosman, J.B. Champagne, L. Colina, T. Connor, T. Costa, F.B. Davies, R. Decarli, G. De Rosa, A.B. Drake, E. Egami, A.-C. Eilers, A.E. Evans, E.P. Farina, M. Habouzit, Z. Haiman, X. Jin, H.D. Jun, K. Kakiichi, Y. Khusanova, G. Kulkarni, F. Loiacono, A. Lupi, C. Mazzucchelli, Z. Pan, S. Rojas-Ruiz, M.A. Strauss, W.L. Tee, B. Trakhtenbrot, M. Trebitsch, B. Venemans, M. Vestergaard, M. Volonteri, F. Walter, Z.-L. Xie, M. Yue, H. Zhang, H. Zhang, S. Zou, The Astrophysical Journal Letters 951 (2023). date_created: 2024-09-05T10:11:02Z date_published: 2023-06-29T00:00:00Z date_updated: 2024-09-18T09:53:12Z day: '29' doi: 10.3847/2041-8213/acc9c8 extern: '1' fulldoi: https://doi.org/10.3847/2041-8213/acc9c8 intvolume: ' 951' issue: '1' language: - iso: eng main_file_link: - open_access: '1' url: https://doi.org/10.3847/2041-8213/acc9c8 month: '06' oa: 1 oa_version: Published Version publication: The Astrophysical Journal Letters publication_identifier: issn: - 2041-8205 - 2041-8213 publication_status: published publisher: American Astronomical Society quality_controlled: '1' scopus_import: '1' status: public title: 'A SPectroscopic survey of biased halos in the reionization Era (ASPIRE): A first look at the rest-frame optical spectra of > 6.5 quasars using JWST' type: journal_article user_id: 317138e5-6ab7-11ef-aa6d-ffef3953e345 volume: 951 year: '2023' ... --- _id: '17606' abstract: - lang: eng text: We present the first results from the JWST ASPIRE program (A SPectroscopic survey of biased halos In the Reionization Era). This program represents an imaging and spectroscopic survey of 25 reionization-era quasars and their environments by utilizing the unprecedented capabilities of NIRCam Wide Field Slitless Spectroscopy (WFSS) mode. ASPIRE will deliver the largest (∼280 arcmin^2) galaxy redshift survey at 3-4 μm among JWST Cycle-1 programs and provide extensive legacy values for studying the formation of the earliest supermassive black holes (SMBHs), the assembly of galaxies, early metal enrichment, and cosmic reionization. In this first ASPIRE paper, we report the discovery of a filamentary structure traced by the luminous quasar J0305-3150 and ten [OIII] emitters at z=6.6. This structure has a 3D galaxy overdensity of δgal=12.6 over 637 cMpc3, one of the most overdense structures known in the early universe, and could eventually evolve into a massive galaxy cluster. Together with existing VLT/MUSE and ALMA observations of this field, our JWST observations reveal that J0305-3150 traces a complex environment where both UV-bright and dusty galaxies are present, and indicate that the early evolution of galaxies around the quasar is not simultaneous. In addition, we discovered 31 [OIII] emitters in this field at other redshifts, 5.3The Astrophysical Journal Letters. 2023;951(1). doi:10.3847/2041-8213/accd6f' apa: 'Wang, F., Yang, J., Hennawi, J. F., Fan, X., Sun, F., Champagne, J. B., … Zou, S. (2023). A SPectroscopic survey of biased halos in the reionization era (ASPIRE): JWST reveals a filamentary structure around a z = 6.61 Quasar. The Astrophysical Journal Letters. American Astronomical Society. https://doi.org/10.3847/2041-8213/accd6f' chicago: 'Wang, Feige, Jinyi Yang, Joseph F. Hennawi, Xiaohui Fan, Fengwu Sun, Jaclyn B. Champagne, Tiago Costa, et al. “A SPectroscopic Survey of Biased Halos in the Reionization Era (ASPIRE): JWST Reveals a Filamentary Structure around a z = 6.61 Quasar.” The Astrophysical Journal Letters. American Astronomical Society, 2023. https://doi.org/10.3847/2041-8213/accd6f.' ieee: 'F. Wang et al., “A SPectroscopic survey of biased halos in the reionization era (ASPIRE): JWST reveals a filamentary structure around a z = 6.61 Quasar,” The Astrophysical Journal Letters, vol. 951, no. 1. American Astronomical Society, 2023.' ista: 'Wang F, Yang J, Hennawi JF, Fan X, Sun F, Champagne JB, Costa T, Habouzit M, Endsley R, Li Z, Lin X, Meyer RA, Schindler J, Wu Y, Bañados E, Barth AJ, Bhowmick AK, Bieri R, Blecha L, Bosman S, Cai Z, Colina L, Connor T, Davies FB, Decarli R, De Rosa G, Drake AB, Egami E, Eilers A-C, Evans AE, Farina EP, Haiman Z, Jiang L, Jin X, Jun HD, Kakiichi K, Khusanova Y, Kulkarni G, Li M, Liu W, Loiacono F, Lupi A, Mazzucchelli C, Onoue M, Pudoka MA, Rojas-Ruiz S, Shen Y, Strauss MA, Tee WL, Trakhtenbrot B, Trebitsch M, Venemans B, Volonteri M, Walter F, Xie Z-L, Yue M, Zhang H, Zhang H, Zou S. 2023. A SPectroscopic survey of biased halos in the reionization era (ASPIRE): JWST reveals a filamentary structure around a z = 6.61 Quasar. The Astrophysical Journal Letters. 951(1), L4.' mla: 'Wang, Feige, et al. “A SPectroscopic Survey of Biased Halos in the Reionization Era (ASPIRE): JWST Reveals a Filamentary Structure around a z = 6.61 Quasar.” The Astrophysical Journal Letters, vol. 951, no. 1, L4, American Astronomical Society, 2023, doi:10.3847/2041-8213/accd6f.' short: F. Wang, J. Yang, J.F. Hennawi, X. Fan, F. Sun, J.B. Champagne, T. Costa, M. Habouzit, R. Endsley, Z. Li, X. Lin, R.A. Meyer, J. Schindler, Y. Wu, E. Bañados, A.J. Barth, A.K. Bhowmick, R. Bieri, L. Blecha, S. Bosman, Z. Cai, L. Colina, T. Connor, F.B. Davies, R. Decarli, G. De Rosa, A.B. Drake, E. Egami, A.-C. Eilers, A.E. Evans, E.P. Farina, Z. Haiman, L. Jiang, X. Jin, H.D. Jun, K. Kakiichi, Y. Khusanova, G. Kulkarni, M. Li, W. Liu, F. Loiacono, A. Lupi, C. Mazzucchelli, M. Onoue, M.A. Pudoka, S. Rojas-Ruiz, Y. Shen, M.A. Strauss, W.L. Tee, B. Trakhtenbrot, M. Trebitsch, B. Venemans, M. Volonteri, F. Walter, Z.-L. Xie, M. Yue, H. Zhang, H. Zhang, S. Zou, The Astrophysical Journal Letters 951 (2023). date_created: 2024-09-05T13:14:46Z date_published: 2023-06-29T00:00:00Z date_updated: 2024-09-23T14:08:58Z day: '29' doi: 10.3847/2041-8213/accd6f extern: '1' fulldoi: https://doi.org/10.3847/2041-8213/accd6f intvolume: ' 951' issue: '1' language: - iso: eng main_file_link: - open_access: '1' url: https://doi.org/10.3847/2041-8213/accd6f month: '06' oa: 1 oa_version: Published Version publication: The Astrophysical Journal Letters publication_identifier: issn: - 2041-8205 - 2041-8213 publication_status: published publisher: American Astronomical Society quality_controlled: '1' scopus_import: '1' status: public title: 'A SPectroscopic survey of biased halos in the reionization era (ASPIRE): JWST reveals a filamentary structure around a z = 6.61 Quasar' type: journal_article user_id: 317138e5-6ab7-11ef-aa6d-ffef3953e345 volume: 951 year: '2023' ... --- _id: '15203' abstract: - lang: eng text: The first X-ray pulsar, Cen X-3, was discovered 50 yr ago. Radiation from such objects is expected to be highly polarized due to birefringence of plasma and vacuum associated with propagation of photons in the presence of the strong magnetic field. Here we present results of the observations of Cen X-3 performed with the Imaging X-ray Polarimetry Explorer. The source exhibited significant flux variability and was observed in two states different by a factor of ∼20 in flux. In the low-luminosity state, no significant polarization was found in either pulse phase-averaged (with a 3σ upper limit of 12%) or phase-resolved (the 3σ upper limits are 20%–30%) data. In the bright state, the polarization degree of 5.8% ± 0.3% and polarization angle of 49fdg6 ± 1fdg5 with a significance of about 20σ were measured from the spectropolarimetric analysis of the phase-averaged data. The phase-resolved analysis showed a significant anticorrelation between the flux and the polarization degree, as well as strong variations of the polarization angle. The fit with the rotating vector model indicates a position angle of the pulsar spin axis of about 49° and a magnetic obliquity of 17°. The detected relatively low polarization can be explained if the upper layers of the neutron star surface are overheated by the accreted matter and the conversion of the polarization modes occurs within the transition region between the upper hot layer and a cooler underlying atmosphere. A fraction of polarization signal can also be produced by reflection of radiation from the neutron star surface and the accretion curtain. article_number: L14 article_processing_charge: No article_type: original arxiv: 1 author: - first_name: Sergey S. full_name: Tsygankov, Sergey S. last_name: Tsygankov - first_name: Victor full_name: Doroshenko, Victor last_name: Doroshenko - first_name: Juri full_name: Poutanen, Juri last_name: Poutanen - first_name: Jeremy full_name: Heyl, Jeremy last_name: Heyl - first_name: Alexander A. full_name: Mushtukov, Alexander A. last_name: Mushtukov - first_name: Ilaria full_name: Caiazzo, Ilaria id: 8ae5b6e7-2a03-11ee-914d-b58ed7a3b47d last_name: Caiazzo orcid: 0000-0002-4770-5388 - first_name: Alessandro full_name: Di Marco, Alessandro last_name: Di Marco - first_name: Sofia V. full_name: Forsblom, Sofia V. last_name: Forsblom - first_name: Denis full_name: González-Caniulef, Denis last_name: González-Caniulef - first_name: Moritz full_name: Klawin, Moritz last_name: Klawin - first_name: Fabio full_name: La Monaca, Fabio last_name: La Monaca - first_name: Christian full_name: Malacaria, Christian last_name: Malacaria - first_name: Herman L. full_name: Marshall, Herman L. last_name: Marshall - first_name: Fabio full_name: Muleri, Fabio last_name: Muleri - first_name: Mason full_name: Ng, Mason last_name: Ng - first_name: Valery F. full_name: Suleimanov, Valery F. last_name: Suleimanov - first_name: Rashid A. full_name: Sunyaev, Rashid A. last_name: Sunyaev - first_name: Roberto full_name: Turolla, Roberto last_name: Turolla - first_name: Iván full_name: Agudo, Iván last_name: Agudo - first_name: Lucio A. full_name: Antonelli, Lucio A. last_name: Antonelli - first_name: Matteo full_name: Bachetti, Matteo last_name: Bachetti - 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: Enrico full_name: Costa, Enrico last_name: Costa - first_name: Alessandra De full_name: Rosa, Alessandra De last_name: Rosa - first_name: Ettore full_name: Del Monte, Ettore last_name: Del Monte - first_name: Laura Di full_name: Gesu, Laura Di last_name: Gesu - first_name: Niccolò Di full_name: Lalla, Niccolò Di last_name: 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: 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: 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: Pierre-Olivier full_name: Petrucci, Pierre-Olivier last_name: Petrucci - 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: Brian D. full_name: Ramsey, Brian D. last_name: Ramsey - first_name: John full_name: Rankin, John last_name: Rankin - 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: 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: 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: Jacco full_name: Vink, Jacco last_name: Vink - first_name: Martin C. full_name: Weisskopf, Martin C. last_name: Weisskopf - first_name: Kinwah full_name: Wu, Kinwah last_name: Wu - first_name: Fei full_name: Xie, Fei last_name: Xie - first_name: Silvia full_name: Zane, Silvia last_name: Zane citation: ama: Tsygankov SS, Doroshenko V, Poutanen J, et al. The x-ray polarimetry view of the accreting pulsar Cen X-3. The Astrophysical Journal Letters. 2022;941(1). doi:10.3847/2041-8213/aca486 apa: Tsygankov, S. S., Doroshenko, V., Poutanen, J., Heyl, J., Mushtukov, A. A., Caiazzo, I., … Zane, S. (2022). The x-ray polarimetry view of the accreting pulsar Cen X-3. The Astrophysical Journal Letters. American Astronomical Society. https://doi.org/10.3847/2041-8213/aca486 chicago: Tsygankov, Sergey S., Victor Doroshenko, Juri Poutanen, Jeremy Heyl, Alexander A. Mushtukov, Ilaria Caiazzo, Alessandro Di Marco, et al. “The X-Ray Polarimetry View of the Accreting Pulsar Cen X-3.” The Astrophysical Journal Letters. American Astronomical Society, 2022. https://doi.org/10.3847/2041-8213/aca486. ieee: S. S. Tsygankov et al., “The x-ray polarimetry view of the accreting pulsar Cen X-3,” The Astrophysical Journal Letters, vol. 941, no. 1. American Astronomical Society, 2022. ista: Tsygankov SS, Doroshenko V, Poutanen J, Heyl J, Mushtukov AA, Caiazzo I, Di Marco A, Forsblom SV, González-Caniulef D, Klawin M, La Monaca F, Malacaria C, Marshall HL, Muleri F, Ng M, Suleimanov VF, Sunyaev RA, Turolla R, Agudo I, Antonelli LA, Bachetti M, Baldini L, Baumgartner WH, Bellazzini R, Bianchi S, Bongiorno SD, Bonino R, Brez A, Bucciantini N, Capitanio F, Castellano S, Cavazzuti E, Ciprini S, Costa E, Rosa AD, Del Monte E, Gesu LD, Lalla ND, 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, Matt G, Mitsuishi I, Mizuno T, Ng C-Y, O’Dell SL, Omodei N, Oppedisano C, Papitto A, Pavlov GG, Peirson AL, Perri M, Pesce-Rollins M, Petrucci P-O, Pilia M, Possenti A, Puccetti S, Ramsey BD, Rankin J, Ratheesh A, Romani RW, Sgrò C, Slane P, Soffitta P, Spandre G, Tamagawa T, Tavecchio F, Taverna R, Tawara Y, Tennant AF, Thomas NE, Tombesi F, Trois A, Vink J, Weisskopf MC, Wu K, Xie F, Zane S. 2022. The x-ray polarimetry view of the accreting pulsar Cen X-3. The Astrophysical Journal Letters. 941(1), L14. mla: Tsygankov, Sergey S., et al. “The X-Ray Polarimetry View of the Accreting Pulsar Cen X-3.” The Astrophysical Journal Letters, vol. 941, no. 1, L14, American Astronomical Society, 2022, doi:10.3847/2041-8213/aca486. short: S.S. Tsygankov, V. Doroshenko, J. Poutanen, J. Heyl, A.A. Mushtukov, I. Caiazzo, A. Di Marco, S.V. Forsblom, D. González-Caniulef, M. Klawin, F. La Monaca, C. Malacaria, H.L. Marshall, F. Muleri, M. Ng, V.F. Suleimanov, R.A. Sunyaev, R. Turolla, I. Agudo, L.A. Antonelli, M. Bachetti, 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, E. Costa, A.D. Rosa, E. Del Monte, L.D. Gesu, N.D. 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, G. Matt, I. Mitsuishi, T. Mizuno, C.-Y. Ng, S.L. O’Dell, N. Omodei, C. Oppedisano, A. Papitto, G.G. Pavlov, A.L. Peirson, M. Perri, M. Pesce-Rollins, P.-O. Petrucci, M. Pilia, A. Possenti, S. Puccetti, B.D. Ramsey, J. Rankin, A. Ratheesh, R.W. Romani, C. Sgrò, P. Slane, P. Soffitta, G. Spandre, T. Tamagawa, F. Tavecchio, R. Taverna, Y. Tawara, A.F. Tennant, N.E. Thomas, F. Tombesi, A. Trois, J. Vink, M.C. Weisskopf, K. Wu, F. Xie, S. Zane, The Astrophysical Journal Letters 941 (2022). date_created: 2024-03-26T09:50:38Z date_published: 2022-12-12T00:00:00Z date_updated: 2024-04-02T07:16:18Z day: '12' doi: 10.3847/2041-8213/aca486 extern: '1' external_id: arxiv: - '2209.02447' fulldoi: https://doi.org/10.3847/2041-8213/aca486 intvolume: ' 941' issue: '1' 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/aca486 month: '12' 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 x-ray polarimetry view of the accreting pulsar Cen X-3 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: 941 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? The Astrophysical Journal Letters. 2022;931(2). doi:10.3847/2041-8213/ac6585 apa: Richer, H. B., Cohen, R. E., Heyl, J., Kalirai, J., Caiazzo, I., Correnti, M., … Williams, B. (2022). When do stars go boom? The Astrophysical Journal Letters. American Astronomical Society. https://doi.org/10.3847/2041-8213/ac6585 chicago: Richer, Harvey B., Roger E. Cohen, Jeremy Heyl, Jason Kalirai, Ilaria Caiazzo, Matteo Correnti, Jeffrey Cummings, et al. “When Do Stars Go Boom?” The Astrophysical Journal Letters. American Astronomical Society, 2022. https://doi.org/10.3847/2041-8213/ac6585. ieee: H. B. Richer et al., “When do stars go boom?,” The Astrophysical Journal Letters, 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?” The Astrophysical Journal Letters, vol. 931, no. 2, L20, American Astronomical Society, 2022, doi:10.3847/2041-8213/ac6585. 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 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: '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. The Astrophysical Journal Letters. 2022;926(2). doi:10.3847/2041-8213/ac50a5 apa: Miller, D. R., Caiazzo, I., Heyl, J., Richer, H. B., & Tremblay, P.-E. (2022). The ultramassive white dwarfs of the Alpha Persei cluster. The Astrophysical Journal Letters. American Astronomical Society. https://doi.org/10.3847/2041-8213/ac50a5 chicago: Miller, David R., Ilaria Caiazzo, Jeremy Heyl, Harvey B. Richer, and Pier-Emmanuel Tremblay. “The Ultramassive White Dwarfs of the Alpha Persei Cluster.” The Astrophysical Journal Letters. American Astronomical Society, 2022. https://doi.org/10.3847/2041-8213/ac50a5. ieee: D. R. Miller, I. Caiazzo, J. Heyl, H. B. Richer, and P.-E. Tremblay, “The ultramassive white dwarfs of the Alpha Persei cluster,” The Astrophysical Journal Letters, 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.” The Astrophysical Journal Letters, vol. 926, no. 2, L24, American Astronomical Society, 2022, doi:10.3847/2041-8213/ac50a5. 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: '17561' abstract: - lang: eng text: Active galactic nuclei (AGNs) can funnel stars and stellar remnants from the vicinity of the galactic center into the inner plane of the AGN disk. Stars reaching this inner region can be tidally disrupted by the stellar-mass black holes in the disk. Such micro tidal disruption events (micro-TDEs) could be a useful probe of stellar interaction with the AGN disk. We find that micro-TDEs in AGNs occur at a rate of ∼170 Gpc−3 yr−1. Their cleanest observational probe may be the electromagnetic detection of tidal disruption in AGNs by heavy supermassive black holes (M• ≳ 108 M⊙) that cannot tidally disrupt solar-type stars. The reconstructed rate of such events from observations, nonetheless, appears to be much lower than our estimated micro-TDE rate. We discuss two such micro-TDE candidates observed to date (ASASSN-15lh and ZTF19aailpwl). article_number: L28 article_processing_charge: No article_type: original author: - first_name: Y. full_name: Yang, Y. last_name: Yang - first_name: I. full_name: Bartos, I. last_name: Bartos - first_name: G. full_name: Fragione, G. last_name: Fragione - first_name: Zoltán full_name: Haiman, Zoltán id: 7c006e8c-cc0d-11ee-8322-cb904ef76f36 last_name: Haiman - first_name: M. full_name: Kowalski, M. last_name: Kowalski - first_name: S. full_name: Márka, S. last_name: Márka - first_name: R. full_name: Perna, R. last_name: Perna - first_name: H. full_name: Tagawa, H. last_name: Tagawa citation: ama: Yang Y, Bartos I, Fragione G, et al. Tidal disruption on stellar-mass black holes in active galactic nuclei. The Astrophysical Journal Letters. 2022;933(2). doi:10.3847/2041-8213/ac7c0b apa: Yang, Y., Bartos, I., Fragione, G., Haiman, Z., Kowalski, M., Márka, S., … Tagawa, H. (2022). Tidal disruption on stellar-mass black holes in active galactic nuclei. The Astrophysical Journal Letters. American Astronomical Society. https://doi.org/10.3847/2041-8213/ac7c0b chicago: Yang, Y., I. Bartos, G. Fragione, Zoltán Haiman, M. Kowalski, S. Márka, R. Perna, and H. Tagawa. “Tidal Disruption on Stellar-Mass Black Holes in Active Galactic Nuclei.” The Astrophysical Journal Letters. American Astronomical Society, 2022. https://doi.org/10.3847/2041-8213/ac7c0b. ieee: Y. Yang et al., “Tidal disruption on stellar-mass black holes in active galactic nuclei,” The Astrophysical Journal Letters, vol. 933, no. 2. American Astronomical Society, 2022. ista: Yang Y, Bartos I, Fragione G, Haiman Z, Kowalski M, Márka S, Perna R, Tagawa H. 2022. Tidal disruption on stellar-mass black holes in active galactic nuclei. The Astrophysical Journal Letters. 933(2), L28. mla: Yang, Y., et al. “Tidal Disruption on Stellar-Mass Black Holes in Active Galactic Nuclei.” The Astrophysical Journal Letters, vol. 933, no. 2, L28, American Astronomical Society, 2022, doi:10.3847/2041-8213/ac7c0b. short: Y. Yang, I. Bartos, G. Fragione, Z. Haiman, M. Kowalski, S. Márka, R. Perna, H. Tagawa, The Astrophysical Journal Letters 933 (2022). date_created: 2024-09-05T12:01:54Z date_published: 2022-07-07T00:00:00Z date_updated: 2024-09-18T12:38:14Z day: '07' doi: 10.3847/2041-8213/ac7c0b extern: '1' fulldoi: https://doi.org/10.3847/2041-8213/ac7c0b intvolume: ' 933' issue: '2' language: - iso: eng main_file_link: - open_access: '1' url: https://doi.org/10.3847/2041-8213/ac7c0b month: '07' oa: 1 oa_version: Published Version publication: The Astrophysical Journal Letters publication_identifier: issn: - 2041-8205 - 2041-8213 publication_status: published publisher: American Astronomical Society quality_controlled: '1' scopus_import: '1' status: public title: Tidal disruption on stellar-mass black holes in active galactic nuclei type: journal_article user_id: 317138e5-6ab7-11ef-aa6d-ffef3953e345 volume: 933 year: '2022' ... --- _id: '13458' abstract: - lang: eng text: Most massive stars experience binary interactions in their lifetimes that can alter both the surface and core structure of the stripped star with significant effects on their ultimate fate as core-collapse supernovae. However, core-collapse supernovae simulations to date have focused almost exclusively on the evolution of single stars. We present a systematic simulation study of single and binary-stripped stars with the same initial mass as candidates for core-collapse supernovae (11–21 M⊙). Generally, we find that binary-stripped stars core tend to have a smaller compactness parameter, with a more prominent, deeper silicon/oxygen interface, and explode preferentially to the corresponding single stars of the same initial mass. Such a dichotomy of behavior between these two modes of evolution would have important implications for supernovae statistics, including the final neutron star masses, explosion energies, and nucleosynthetic yields. Binary-stripped remnants are also well poised to populate the possible mass gap between the heaviest neutron stars and the lightest black holes. Our work presents an improvement along two fronts, as we self-consistently account for the pre-collapse stellar evolution and the subsequent explosion outcome. Even so, our results emphasize the need for more detailed stellar evolutionary models to capture the sensitive nature of explosion outcome. article_number: L5 article_processing_charge: No article_type: original arxiv: 1 author: - first_name: David full_name: Vartanyan, David last_name: Vartanyan - first_name: Eva full_name: Laplace, Eva last_name: Laplace - first_name: Mathieu full_name: Renzo, Mathieu last_name: Renzo - first_name: Ylva Louise Linsdotter full_name: Götberg, Ylva Louise Linsdotter id: d0648d0c-0f64-11ee-a2e0-dd0faa2e4f7d last_name: Götberg orcid: 0000-0002-6960-6911 - first_name: Adam full_name: Burrows, Adam last_name: Burrows - first_name: Selma E. full_name: de Mink, Selma E. last_name: de Mink citation: ama: Vartanyan D, Laplace E, Renzo M, Götberg YLL, Burrows A, de Mink SE. Binary-stripped stars as core-collapse supernovae progenitors. The Astrophysical Journal Letters. 2021;916(1). doi:10.3847/2041-8213/ac0b42 apa: Vartanyan, D., Laplace, E., Renzo, M., Götberg, Y. L. L., Burrows, A., & de Mink, S. E. (2021). Binary-stripped stars as core-collapse supernovae progenitors. The Astrophysical Journal Letters. American Astronomical Society. https://doi.org/10.3847/2041-8213/ac0b42 chicago: Vartanyan, David, Eva Laplace, Mathieu Renzo, Ylva Louise Linsdotter Götberg, Adam Burrows, and Selma E. de Mink. “Binary-Stripped Stars as Core-Collapse Supernovae Progenitors.” The Astrophysical Journal Letters. American Astronomical Society, 2021. https://doi.org/10.3847/2041-8213/ac0b42. ieee: D. Vartanyan, E. Laplace, M. Renzo, Y. L. L. Götberg, A. Burrows, and S. E. de Mink, “Binary-stripped stars as core-collapse supernovae progenitors,” The Astrophysical Journal Letters, vol. 916, no. 1. American Astronomical Society, 2021. ista: Vartanyan D, Laplace E, Renzo M, Götberg YLL, Burrows A, de Mink SE. 2021. Binary-stripped stars as core-collapse supernovae progenitors. The Astrophysical Journal Letters. 916(1), L5. mla: Vartanyan, David, et al. “Binary-Stripped Stars as Core-Collapse Supernovae Progenitors.” The Astrophysical Journal Letters, vol. 916, no. 1, L5, American Astronomical Society, 2021, doi:10.3847/2041-8213/ac0b42. short: D. Vartanyan, E. Laplace, M. Renzo, Y.L.L. Götberg, A. Burrows, S.E. de Mink, The Astrophysical Journal Letters 916 (2021). date_created: 2023-08-03T10:11:45Z date_published: 2021-07-23T00:00:00Z date_updated: 2023-08-21T11:37:48Z day: '23' doi: 10.3847/2041-8213/ac0b42 extern: '1' external_id: arxiv: - '2104.03317' fulldoi: https://doi.org/10.3847/2041-8213/ac0b42 intvolume: ' 916' issue: '1' keyword: - Space and Planetary Science - Astronomy and Astrophysics language: - iso: eng main_file_link: - open_access: '1' url: https://arxiv.org/abs/2104.03317 month: '07' oa: 1 oa_version: Preprint 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: Binary-stripped stars as core-collapse supernovae progenitors type: journal_article user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87 volume: 916 year: '2021' ... --- _id: '17583' abstract: - lang: eng text: The astrophysical origin of gravitational wave transients is a timely open question in the wake of discoveries by the Laser Interferometer Gravitational-Wave Observatory (LIGO)/Virgo. In active galactic nuclei (AGNs), binaries form and evolve efficiently by interaction with a dense population of stars and the gaseous AGN disk. Previous studies have shown that stellar-mass black hole (BH) mergers in such environments can explain the merger rate and the number of suspected hierarchical mergers observed by LIGO/Virgo. The binary eccentricity distribution can provide further information to distinguish between astrophysical models. Here we derive the eccentricity distribution of BH mergers in AGN disks. We find that eccentricity is mainly due to binary–single (BS) interactions, which lead to most BH mergers in AGN disks having a significant eccentricity at 0.01 Hz, detectable by the Laser Interferometer Space Antenna. If BS interactions occur in isotropic-3D directions, then 8%–30% of the mergers in AGN disks will have eccentricities at 10 Hz above e10 Hz ≳ 0.03, detectable by LIGO/Virgo/Kamioka Gravitational Wave Detector, while 5%–17% of mergers have e10 Hz ≥ 0.3. On the other hand, if BS interactions are confined to the AGN–disk plane due to torques from the disk, with 1–20 intermediate binary states during each interaction, or if BHs can migrate to ≲ 10−3 pc from the central supermassive BH, then 10%–70% of the mergers will be highly eccentric (e10 Hz ≥ 0.3), consistent with the possible high eccentricity in GW190521. article_number: L20 article_processing_charge: No article_type: original author: - first_name: Hiromichi full_name: Tagawa, Hiromichi last_name: Tagawa - first_name: Bence full_name: Kocsis, Bence last_name: Kocsis - first_name: Zoltán full_name: Haiman, Zoltán id: 7c006e8c-cc0d-11ee-8322-cb904ef76f36 last_name: Haiman - first_name: Imre full_name: Bartos, Imre last_name: Bartos - first_name: Kazuyuki full_name: Omukai, Kazuyuki last_name: Omukai - first_name: Johan full_name: Samsing, Johan last_name: Samsing citation: ama: Tagawa H, Kocsis B, Haiman Z, Bartos I, Omukai K, Samsing J. Eccentric black hole mergers in active galactic nuclei. The Astrophysical Journal Letters. 2021;907(1). doi:10.3847/2041-8213/abd4d3 apa: Tagawa, H., Kocsis, B., Haiman, Z., Bartos, I., Omukai, K., & Samsing, J. (2021). Eccentric black hole mergers in active galactic nuclei. The Astrophysical Journal Letters. American Astronomical Society. https://doi.org/10.3847/2041-8213/abd4d3 chicago: Tagawa, Hiromichi, Bence Kocsis, Zoltán Haiman, Imre Bartos, Kazuyuki Omukai, and Johan Samsing. “Eccentric Black Hole Mergers in Active Galactic Nuclei.” The Astrophysical Journal Letters. American Astronomical Society, 2021. https://doi.org/10.3847/2041-8213/abd4d3. ieee: H. Tagawa, B. Kocsis, Z. Haiman, I. Bartos, K. Omukai, and J. Samsing, “Eccentric black hole mergers in active galactic nuclei,” The Astrophysical Journal Letters, vol. 907, no. 1. American Astronomical Society, 2021. ista: Tagawa H, Kocsis B, Haiman Z, Bartos I, Omukai K, Samsing J. 2021. Eccentric black hole mergers in active galactic nuclei. The Astrophysical Journal Letters. 907(1), L20. mla: Tagawa, Hiromichi, et al. “Eccentric Black Hole Mergers in Active Galactic Nuclei.” The Astrophysical Journal Letters, vol. 907, no. 1, L20, American Astronomical Society, 2021, doi:10.3847/2041-8213/abd4d3. short: H. Tagawa, B. Kocsis, Z. Haiman, I. Bartos, K. Omukai, J. Samsing, The Astrophysical Journal Letters 907 (2021). date_created: 2024-09-05T12:27:07Z date_published: 2021-01-21T00:00:00Z date_updated: 2024-09-19T11:41:11Z day: '21' doi: 10.3847/2041-8213/abd4d3 extern: '1' fulldoi: https://doi.org/10.3847/2041-8213/abd4d3 intvolume: ' 907' issue: '1' language: - iso: eng main_file_link: - open_access: '1' url: https://doi.org/10.3847/2041-8213/abd4d3 month: '01' oa: 1 oa_version: Published Version publication: The Astrophysical Journal Letters publication_identifier: issn: - 2041-8205 - 2041-8213 publication_status: published publisher: American Astronomical Society quality_controlled: '1' scopus_import: '1' status: public title: Eccentric black hole mergers in active galactic nuclei type: journal_article user_id: 317138e5-6ab7-11ef-aa6d-ffef3953e345 volume: 907 year: '2021' ... --- _id: '17589' abstract: - lang: eng text: The origin of the black hole mergers detected by LIGO and Virgo remains an open question. While the unusual mass and spin of a few events constrain their possible astrophysical formation mechanisms, it is difficult to classify the bulk of the observed mergers. Here we consider the distribution of masses and spins in LIGO/Virgo's first and second observing catalogs, and find that for a significant fraction (25%) of these detected events, an AGN-disk origin model is preferred over a parametric mass-spin model fit to the full GWTC-2 merger sample (Bayes factor B>10). We use this to estimate the black hole merger rate in AGNs to be about 2.8±1.8\, Gpc−3yr−1, comparable to theoretical expectations. We find that AGNs can explain the rate and mass distribution of the observed events with primary black hole mass in the pair-instability mass gap (M≳50\, M⊙). article_number: L42 article_processing_charge: No article_type: original author: - first_name: V. full_name: Gayathri, V. last_name: Gayathri - first_name: Y. full_name: Yang, Y. last_name: Yang - first_name: H. full_name: Tagawa, H. last_name: Tagawa - first_name: Zoltán full_name: Haiman, Zoltán id: 7c006e8c-cc0d-11ee-8322-cb904ef76f36 last_name: Haiman - first_name: I. full_name: Bartos, I. last_name: Bartos citation: ama: Gayathri V, Yang Y, Tagawa H, Haiman Z, Bartos I. Black hole mergers of AGN origin in LIGO–Virgo’s O1–O3a observing periods. The Astrophysical Journal Letters. 2021;920(2). doi:10.3847/2041-8213/ac2cc1 apa: Gayathri, V., Yang, Y., Tagawa, H., Haiman, Z., & Bartos, I. (2021). Black hole mergers of AGN origin in LIGO–Virgo’s O1–O3a observing periods. The Astrophysical Journal Letters. American Astronomical Society. https://doi.org/10.3847/2041-8213/ac2cc1 chicago: Gayathri, V., Y. Yang, H. Tagawa, Zoltán Haiman, and I. Bartos. “Black Hole Mergers of AGN Origin in LIGO–Virgo’s O1–O3a Observing Periods.” The Astrophysical Journal Letters. American Astronomical Society, 2021. https://doi.org/10.3847/2041-8213/ac2cc1. ieee: V. Gayathri, Y. Yang, H. Tagawa, Z. Haiman, and I. Bartos, “Black hole mergers of AGN origin in LIGO–Virgo’s O1–O3a observing periods,” The Astrophysical Journal Letters, vol. 920, no. 2. American Astronomical Society, 2021. ista: Gayathri V, Yang Y, Tagawa H, Haiman Z, Bartos I. 2021. Black hole mergers of AGN origin in LIGO–Virgo’s O1–O3a observing periods. The Astrophysical Journal Letters. 920(2), L42. mla: Gayathri, V., et al. “Black Hole Mergers of AGN Origin in LIGO–Virgo’s O1–O3a Observing Periods.” The Astrophysical Journal Letters, vol. 920, no. 2, L42, American Astronomical Society, 2021, doi:10.3847/2041-8213/ac2cc1. short: V. Gayathri, Y. Yang, H. Tagawa, Z. Haiman, I. Bartos, The Astrophysical Journal Letters 920 (2021). date_created: 2024-09-05T12:34:46Z date_published: 2021-10-21T00:00:00Z date_updated: 2024-09-19T12:17:28Z day: '21' doi: 10.3847/2041-8213/ac2cc1 extern: '1' fulldoi: https://doi.org/10.3847/2041-8213/ac2cc1 intvolume: ' 920' issue: '2' language: - iso: eng main_file_link: - open_access: '1' url: https://doi.org/10.3847/2041-8213/ac2cc1 month: '10' oa: 1 oa_version: Published Version publication: The Astrophysical Journal Letters publication_identifier: issn: - 2041-8205 - 2041-8213 publication_status: published publisher: American Astronomical Society quality_controlled: '1' scopus_import: '1' status: public title: Black hole mergers of AGN origin in LIGO–Virgo’s O1–O3a observing periods type: journal_article user_id: 317138e5-6ab7-11ef-aa6d-ffef3953e345 volume: 920 year: '2021' ... --- OA_place: repository OA_type: green _id: '17592' abstract: - lang: eng text: Using high-resolution hydrodynamics simulations, we show that equal-mass binaries accreting from a circumbinary disk evolve toward an orbital eccentricity of e ≃ 0.45, unless they are initialized on a nearly circular orbit with e ≲ 0.08, in which case they further circularize. The implied bi-modal eccentricity distribution resembles that seen in post-AGB stellar binaries. Large accretion spikes around periapse impart a tell-tale, quasiperiodic, bursty signature on the light curves of eccentric binaries. We predict that intermediate-mass and massive black hole binaries at z ≲ 10 entering the LISA band will have measurable eccentricities in the range of e ≃ 10−3 − 10−2, if they have experienced a gas-driven phase. On the other hand, GW190521 would have entered the LIGO/Virgo band with undetectable eccentricity ∼10−6 if it had been driven into the gravitational-wave regime by a gas disk. article_number: L13 article_processing_charge: No article_type: original arxiv: 1 author: - first_name: Jonathan full_name: Zrake, Jonathan last_name: Zrake - first_name: Christopher full_name: Tiede, Christopher last_name: Tiede - first_name: Andrew full_name: MacFadyen, Andrew last_name: MacFadyen - first_name: Zoltán full_name: Haiman, Zoltán id: 7c006e8c-cc0d-11ee-8322-cb904ef76f36 last_name: Haiman orcid: 0000-0003-3633-5403 citation: ama: Zrake J, Tiede C, MacFadyen A, Haiman Z. Equilibrium eccentricity of accreting binaries. The Astrophysical Journal Letters. 2021;909(1). doi:10.3847/2041-8213/abdd1c apa: Zrake, J., Tiede, C., MacFadyen, A., & Haiman, Z. (2021). Equilibrium eccentricity of accreting binaries. The Astrophysical Journal Letters. American Astronomical Society. https://doi.org/10.3847/2041-8213/abdd1c chicago: Zrake, Jonathan, Christopher Tiede, Andrew MacFadyen, and Zoltán Haiman. “Equilibrium Eccentricity of Accreting Binaries.” The Astrophysical Journal Letters. American Astronomical Society, 2021. https://doi.org/10.3847/2041-8213/abdd1c. ieee: J. Zrake, C. Tiede, A. MacFadyen, and Z. Haiman, “Equilibrium eccentricity of accreting binaries,” The Astrophysical Journal Letters, vol. 909, no. 1. American Astronomical Society, 2021. ista: Zrake J, Tiede C, MacFadyen A, Haiman Z. 2021. Equilibrium eccentricity of accreting binaries. The Astrophysical Journal Letters. 909(1), L13. mla: Zrake, Jonathan, et al. “Equilibrium Eccentricity of Accreting Binaries.” The Astrophysical Journal Letters, vol. 909, no. 1, L13, American Astronomical Society, 2021, doi:10.3847/2041-8213/abdd1c. short: J. Zrake, C. Tiede, A. MacFadyen, Z. Haiman, The Astrophysical Journal Letters 909 (2021). date_created: 2024-09-05T12:39:13Z date_published: 2021-03-03T00:00:00Z date_updated: 2025-01-03T11:32:01Z day: '03' doi: 10.3847/2041-8213/abdd1c extern: '1' external_id: arxiv: - '2010.09707' fulldoi: https://doi.org/10.3847/2041-8213/abdd1c intvolume: ' 909' issue: '1' language: - iso: eng main_file_link: - open_access: '1' url: https://arxiv.org/abs/2010.09707 month: '03' oa: 1 oa_version: Preprint 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: Equilibrium eccentricity of accreting binaries type: journal_article user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87 volume: 909 year: '2021' ... --- _id: '15224' abstract: - lang: eng text: When a star exhausts its nuclear fuel, it either explodes as a supernova or more quiescently becomes a white dwarf, an object about half the mass of our Sun with a radius of about that of the Earth. About one-fifth of white dwarfs exhibit the presence of magnetic fields, whose origin has long been debated as either the product of previous stages of evolution or of binary interactions. We here report the discovery of two massive and magnetic white-dwarf members of young star clusters in the Gaia second data release (DR2) database, while a third massive and magnetic cluster white dwarf was already reported in a previous paper. These stars are most likely the product of single-star evolution and therefore challenge the merger scenario as the only way to produce magnetic white dwarfs. The progenitor masses of these stars are all above 5 solar masses, and there are only two other cluster white dwarfs whose distances have been unambiguously measured with Gaia and whose progenitors' masses fall in this range. This high incidence of magnetic white dwarfs indicates that intermediate-mass progenitors are more likely to produce magnetic remnants and that a fraction of magnetic white dwarfs forms from intermediate-mass stars. article_number: L14 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: Jeremy full_name: Heyl, Jeremy last_name: Heyl - first_name: Harvey full_name: Richer, Harvey last_name: Richer - first_name: Jeffrey full_name: Cummings, Jeffrey last_name: Cummings - first_name: Leesa full_name: Fleury, Leesa last_name: Fleury - first_name: James full_name: Hegarty, James last_name: Hegarty - first_name: Jason full_name: Kalirai, Jason last_name: Kalirai - first_name: Ronan full_name: Kerr, Ronan last_name: Kerr - first_name: Sarah full_name: Thiele, Sarah last_name: Thiele - first_name: Pier-Emmanuel full_name: Tremblay, Pier-Emmanuel last_name: Tremblay - first_name: Michael full_name: Villanueva, Michael last_name: Villanueva citation: ama: Caiazzo I, Heyl J, Richer H, et al. Intermediate-mass stars become magnetic white dwarfs. The Astrophysical Journal Letters. 2020;901(1). doi:10.3847/2041-8213/abb5f7 apa: Caiazzo, I., Heyl, J., Richer, H., Cummings, J., Fleury, L., Hegarty, J., … Villanueva, M. (2020). Intermediate-mass stars become magnetic white dwarfs. The Astrophysical Journal Letters. American Astronomical Society. https://doi.org/10.3847/2041-8213/abb5f7 chicago: Caiazzo, Ilaria, Jeremy Heyl, Harvey Richer, Jeffrey Cummings, Leesa Fleury, James Hegarty, Jason Kalirai, et al. “Intermediate-Mass Stars Become Magnetic White Dwarfs.” The Astrophysical Journal Letters. American Astronomical Society, 2020. https://doi.org/10.3847/2041-8213/abb5f7. ieee: I. Caiazzo et al., “Intermediate-mass stars become magnetic white dwarfs,” The Astrophysical Journal Letters, vol. 901, no. 1. American Astronomical Society, 2020. ista: Caiazzo I, Heyl J, Richer H, Cummings J, Fleury L, Hegarty J, Kalirai J, Kerr R, Thiele S, Tremblay P-E, Villanueva M. 2020. Intermediate-mass stars become magnetic white dwarfs. The Astrophysical Journal Letters. 901(1), L14. mla: Caiazzo, Ilaria, et al. “Intermediate-Mass Stars Become Magnetic White Dwarfs.” The Astrophysical Journal Letters, vol. 901, no. 1, L14, American Astronomical Society, 2020, doi:10.3847/2041-8213/abb5f7. short: I. Caiazzo, J. Heyl, H. Richer, J. Cummings, L. Fleury, J. Hegarty, J. Kalirai, R. Kerr, S. Thiele, P.-E. Tremblay, M. Villanueva, The Astrophysical Journal Letters 901 (2020). date_created: 2024-03-26T10:35:02Z date_published: 2020-09-22T00:00:00Z date_updated: 2024-10-14T12:33:09Z day: '22' doi: 10.3847/2041-8213/abb5f7 extern: '1' external_id: arxiv: - '2009.03374' fulldoi: https://doi.org/10.3847/2041-8213/abb5f7 intvolume: ' 901' issue: '1' keyword: - Space and Planetary Science - Astronomy and Astrophysics language: - iso: eng main_file_link: - open_access: '1' url: https://doi.org/10.48550/arXiv.2009.03374 month: '09' oa: 1 oa_version: Preprint 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: Intermediate-mass stars become magnetic white dwarfs type: journal_article user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87 volume: 901 year: '2020' ... --- _id: '17537' abstract: - lang: eng text: The recent gravitational wave merger event, GW190521, has challenged our understanding of the stellar-mass black hole (BH) formation. The primary and secondary BH are both inferred to fall inside the pair-instability (PI) mass gap. Here we propose that the formation of such binaries is possible through gas accretion onto the BH remnants of Population III (Pop~III) stars born in high-redshift (z>10) minihalos. Once the parent halo has grown to the atomic-cooling limit, even brief episodes of gas accretion in the dense central regions of the halo can increase the masses of Pop~III remnant BHs above the PI limit. Starting with a BBH with an initial mass of O(100) M⊙ we find that it would only need to spend about 100~Myr in the inner few pc of an atomic-cooling halo to accrete about 50~M⊙ of material and resemble a system similar to GW190521. The dynamical friction timescale for the binary to sink to the dense inner region of its parent halo is comparable or shorter than the accretion timescale required to increase their mass above the PI limit. Once in the core of the halo, the binary can enter a phase of hyper-Eddington accretion, where it would only take a few thousand years to exceed the PI limit through accretion. Even more massive BBHs could form through this channel, and be detectable by detectors with improved low-frequency sensitivity. Single Pop~III BH remnants would also grow through accretion and could later form binaries dynamically. As little as a few percent of Pop~III BH remnants may be sufficient to match the rate of massive BBH mergers inferred from GW190521 of 0.13+0.3−0.11Gpc−3yr−1. article_number: L21 article_processing_charge: No article_type: original author: - first_name: Mohammadtaher full_name: Safarzadeh, Mohammadtaher last_name: Safarzadeh - first_name: Zoltán full_name: Haiman, Zoltán id: 7c006e8c-cc0d-11ee-8322-cb904ef76f36 last_name: Haiman citation: ama: Safarzadeh M, Haiman Z. Formation of GW190521 via gas accretion onto population III stellar black hole remnants born in high-redshift minihalos. The Astrophysical Journal Letters. 2020;903(1). doi:10.3847/2041-8213/abc253 apa: Safarzadeh, M., & Haiman, Z. (2020). Formation of GW190521 via gas accretion onto population III stellar black hole remnants born in high-redshift minihalos. The Astrophysical Journal Letters. American Astronomical Society. https://doi.org/10.3847/2041-8213/abc253 chicago: Safarzadeh, Mohammadtaher, and Zoltán Haiman. “Formation of GW190521 via Gas Accretion onto Population III Stellar Black Hole Remnants Born in High-Redshift Minihalos.” The Astrophysical Journal Letters. American Astronomical Society, 2020. https://doi.org/10.3847/2041-8213/abc253. ieee: M. Safarzadeh and Z. Haiman, “Formation of GW190521 via gas accretion onto population III stellar black hole remnants born in high-redshift minihalos,” The Astrophysical Journal Letters, vol. 903, no. 1. American Astronomical Society, 2020. ista: Safarzadeh M, Haiman Z. 2020. Formation of GW190521 via gas accretion onto population III stellar black hole remnants born in high-redshift minihalos. The Astrophysical Journal Letters. 903(1), L21. mla: Safarzadeh, Mohammadtaher, and Zoltán Haiman. “Formation of GW190521 via Gas Accretion onto Population III Stellar Black Hole Remnants Born in High-Redshift Minihalos.” The Astrophysical Journal Letters, vol. 903, no. 1, L21, American Astronomical Society, 2020, doi:10.3847/2041-8213/abc253. short: M. Safarzadeh, Z. Haiman, The Astrophysical Journal Letters 903 (2020). date_created: 2024-09-05T09:50:29Z date_published: 2020-11-02T00:00:00Z date_updated: 2024-09-12T09:33:05Z day: '02' doi: 10.3847/2041-8213/abc253 extern: '1' fulldoi: https://doi.org/10.3847/2041-8213/abc253 intvolume: ' 903' issue: '1' language: - iso: eng main_file_link: - open_access: '1' url: https://doi.org/10.3847/2041-8213/abc253 month: '11' oa: 1 oa_version: Published Version publication: The Astrophysical Journal Letters publication_identifier: issn: - 2041-8205 - 2041-8213 publication_status: published publisher: American Astronomical Society quality_controlled: '1' scopus_import: '1' status: public title: Formation of GW190521 via gas accretion onto population III stellar black hole remnants born in high-redshift minihalos type: journal_article user_id: 317138e5-6ab7-11ef-aa6d-ffef3953e345 volume: 903 year: '2020' ... --- _id: '17605' abstract: - lang: eng text: Despite the rapidly growing number of stellar-mass binary black hole mergers discovered through gravitational waves, the origin of these binaries is still not known. In galactic centers, black holes can be brought to each others' proximity by dynamical processes, resulting in mergers. It is also possible that black holes formed in previous mergers encounter new black holes, resulting in so-called hierarchical mergers. Hierarchical events carry signatures such as higher-than-usual black hole mass and spin. Here we show that the recently reported gravitational-wave candidate, GW170817A, could be the result of such a hierarchical merger. In particular, its chirp mass ∼40 M⊙ and effective spin of χeff ∼ 0.5 are the typically expected values from hierarchical mergers within the disks of active galactic nuclei. We find that the reconstructed parameters of GW170817A strongly favor a hierarchical merger origin over having been produced by an isolated binary origin (with an odds ratio of > 10^3). article_number: L20 article_processing_charge: No article_type: original arxiv: 1 author: - first_name: V. full_name: Gayathri, V. last_name: Gayathri - first_name: I. full_name: Bartos, I. last_name: Bartos - first_name: Zoltán full_name: Haiman, Zoltán id: 7c006e8c-cc0d-11ee-8322-cb904ef76f36 last_name: Haiman - first_name: S. full_name: Klimenko, S. last_name: Klimenko - first_name: B. full_name: Kocsis, B. last_name: Kocsis - first_name: S. full_name: Márka, S. last_name: Márka - first_name: Y. full_name: Yang, Y. last_name: Yang citation: ama: Gayathri V, Bartos I, Haiman Z, et al. GW170817A as a hierarchical black hole merger. The Astrophysical Journal Letters. 2020;890(2). doi:10.3847/2041-8213/ab745d apa: Gayathri, V., Bartos, I., Haiman, Z., Klimenko, S., Kocsis, B., Márka, S., & Yang, Y. (2020). GW170817A as a hierarchical black hole merger. The Astrophysical Journal Letters. American Astronomical Society. https://doi.org/10.3847/2041-8213/ab745d chicago: Gayathri, V., I. Bartos, Zoltán Haiman, S. Klimenko, B. Kocsis, S. Márka, and Y. Yang. “GW170817A as a Hierarchical Black Hole Merger.” The Astrophysical Journal Letters. American Astronomical Society, 2020. https://doi.org/10.3847/2041-8213/ab745d. ieee: V. Gayathri et al., “GW170817A as a hierarchical black hole merger,” The Astrophysical Journal Letters, vol. 890, no. 2. American Astronomical Society, 2020. ista: Gayathri V, Bartos I, Haiman Z, Klimenko S, Kocsis B, Márka S, Yang Y. 2020. GW170817A as a hierarchical black hole merger. The Astrophysical Journal Letters. 890(2), L20. mla: Gayathri, V., et al. “GW170817A as a Hierarchical Black Hole Merger.” The Astrophysical Journal Letters, vol. 890, no. 2, L20, American Astronomical Society, 2020, doi:10.3847/2041-8213/ab745d. short: V. Gayathri, I. Bartos, Z. Haiman, S. Klimenko, B. Kocsis, S. Márka, Y. Yang, The Astrophysical Journal Letters 890 (2020). date_created: 2024-09-05T13:13:33Z date_published: 2020-02-18T00:00:00Z date_updated: 2024-09-23T14:04:29Z day: '18' doi: 10.3847/2041-8213/ab745d extern: '1' external_id: arxiv: - '1911.11142' fulldoi: https://doi.org/10.3847/2041-8213/ab745d intvolume: ' 890' issue: '2' language: - iso: eng main_file_link: - open_access: '1' url: ' https://doi.org/10.48550/arXiv.1911.11142' month: '02' oa: 1 oa_version: Preprint publication: The Astrophysical Journal Letters publication_identifier: issn: - 2041-8205 - 2041-8213 publication_status: published publisher: American Astronomical Society quality_controlled: '1' scopus_import: '1' status: public title: GW170817A as a hierarchical black hole merger type: journal_article user_id: 317138e5-6ab7-11ef-aa6d-ffef3953e345 volume: 890 year: '2020' ... --- _id: '17607' abstract: - lang: eng text: The heaviest neutron stars and lightest black holes expected to be produced by stellar evolution leave the mass-range 2.2 M⊙≲m≲5 M⊙ largely unpopulated. Objects found in this so-called lower mass gap likely originate from a distinct astrophysical process. Such an object, with mass 2.6 M⊙ was recently detected in the binary merger GW190814 through gravitational waves by LIGO/Virgo. Here we show that black holes in the mass gap are naturally assembled through mergers and accretion in AGN disks, and can subsequently participate in additional mergers. We compute the properties of AGN-assisted mergers involving neutron stars and black holes, accounting for accretion. We find that mergers in which one of the objects is in the lower mass gap represent up to 4% of AGN-assisted mergers detectable by LIGO/Virgo. The lighter object of GW190814, with mass 2.6 M⊙, could have grown in an AGN disk through accretion. We find that the unexpectedly high total mass of 3.4 M⊙ observed in the neutron star merger GW190425 may also be due to accretion in an AGN disk. article_number: L34 article_processing_charge: No article_type: original arxiv: 1 author: - first_name: Y. full_name: Yang, Y. last_name: Yang - first_name: V. full_name: Gayathri, V. last_name: Gayathri - first_name: I. full_name: Bartos, I. last_name: Bartos - first_name: Zoltán full_name: Haiman, Zoltán id: 7c006e8c-cc0d-11ee-8322-cb904ef76f36 last_name: Haiman - first_name: M. full_name: Safarzadeh, M. last_name: Safarzadeh - first_name: H. full_name: Tagawa, H. last_name: Tagawa citation: ama: Yang Y, Gayathri V, Bartos I, Haiman Z, Safarzadeh M, Tagawa H. Black hole formation in the lower mass gap through mergers and accretion in AGN disks. The Astrophysical Journal Letters. 2020;901(2). doi:10.3847/2041-8213/abb940 apa: Yang, Y., Gayathri, V., Bartos, I., Haiman, Z., Safarzadeh, M., & Tagawa, H. (2020). Black hole formation in the lower mass gap through mergers and accretion in AGN disks. The Astrophysical Journal Letters. American Astronomical Society. https://doi.org/10.3847/2041-8213/abb940 chicago: Yang, Y., V. Gayathri, I. Bartos, Zoltán Haiman, M. Safarzadeh, and H. Tagawa. “Black Hole Formation in the Lower Mass Gap through Mergers and Accretion in AGN Disks.” The Astrophysical Journal Letters. American Astronomical Society, 2020. https://doi.org/10.3847/2041-8213/abb940. ieee: Y. Yang, V. Gayathri, I. Bartos, Z. Haiman, M. Safarzadeh, and H. Tagawa, “Black hole formation in the lower mass gap through mergers and accretion in AGN disks,” The Astrophysical Journal Letters, vol. 901, no. 2. American Astronomical Society, 2020. ista: Yang Y, Gayathri V, Bartos I, Haiman Z, Safarzadeh M, Tagawa H. 2020. Black hole formation in the lower mass gap through mergers and accretion in AGN disks. The Astrophysical Journal Letters. 901(2), L34. mla: Yang, Y., et al. “Black Hole Formation in the Lower Mass Gap through Mergers and Accretion in AGN Disks.” The Astrophysical Journal Letters, vol. 901, no. 2, L34, American Astronomical Society, 2020, doi:10.3847/2041-8213/abb940. short: Y. Yang, V. Gayathri, I. Bartos, Z. Haiman, M. Safarzadeh, H. Tagawa, The Astrophysical Journal Letters 901 (2020). date_created: 2024-09-05T13:15:59Z date_published: 2020-10-01T00:00:00Z date_updated: 2024-09-23T14:16:49Z day: '01' doi: 10.3847/2041-8213/abb940 extern: '1' external_id: arxiv: - '2007.04781' fulldoi: https://doi.org/10.3847/2041-8213/abb940 intvolume: ' 901' issue: '2' language: - iso: eng main_file_link: - open_access: '1' url: ' https://doi.org/10.48550/arXiv.2007.04781' month: '10' oa: 1 oa_version: Preprint publication: The Astrophysical Journal Letters publication_identifier: issn: - 2041-8205 - 2041-8213 publication_status: published publisher: American Astronomical Society quality_controlled: '1' scopus_import: '1' status: public title: Black hole formation in the lower mass gap through mergers and accretion in AGN disks type: journal_article user_id: 317138e5-6ab7-11ef-aa6d-ffef3953e345 volume: 901 year: '2020' ...