---
_id: '17534'
abstract:
- lang: eng
text: We propose a space-based interferometer surveying the gravitational wave (GW)
sky in the milli-Hz to μ-Hz frequency range. By the 2040s, the μ-Hz frequency
band, bracketed in between the Laser Interferometer Space Antenna (LISA) and pulsar
timing arrays, will constitute the largest gap in the coverage of the astrophysically
relevant GW spectrum. Yet many outstanding questions related to astrophysics and
cosmology are best answered by GW observations in this band. We show that a μ-Hz
GW detector will be a truly overarching observatory for the scientific community
at large, greatly extending the potential of LISA. Conceived to detect massive
black hole binaries from their early inspiral with high signal-to-noise ratio,
and low-frequency stellar binaries in the Galaxy, this instrument will be a cornerstone
for multimessenger astronomy from the solar neighbourhood to the high-redshift
Universe.
article_processing_charge: No
article_type: original
author:
- first_name: Alberto
full_name: Sesana, Alberto
last_name: Sesana
- first_name: Natalia
full_name: Korsakova, Natalia
last_name: Korsakova
- first_name: Manuel Arca
full_name: Sedda, Manuel Arca
last_name: Sedda
- first_name: Vishal
full_name: Baibhav, Vishal
last_name: Baibhav
- first_name: Enrico
full_name: Barausse, Enrico
last_name: Barausse
- first_name: Simon
full_name: Barke, Simon
last_name: Barke
- first_name: Emanuele
full_name: Berti, Emanuele
last_name: Berti
- first_name: Matteo
full_name: Bonetti, Matteo
last_name: Bonetti
- first_name: Pedro R.
full_name: Capelo, Pedro R.
last_name: Capelo
- first_name: Chiara
full_name: Caprini, Chiara
last_name: Caprini
- first_name: Juan
full_name: Garcia-Bellido, Juan
last_name: Garcia-Bellido
- first_name: Zoltán
full_name: Haiman, Zoltán
id: 7c006e8c-cc0d-11ee-8322-cb904ef76f36
last_name: Haiman
- first_name: Karan
full_name: Jani, Karan
last_name: Jani
- first_name: Oliver
full_name: Jennrich, Oliver
last_name: Jennrich
- first_name: Peter H.
full_name: Johansson, Peter H.
last_name: Johansson
- first_name: Fazeel Mahmood
full_name: Khan, Fazeel Mahmood
last_name: Khan
- first_name: Valeriya
full_name: Korol, Valeriya
last_name: Korol
- first_name: Astrid
full_name: Lamberts, Astrid
last_name: Lamberts
- first_name: Alessandro
full_name: Lupi, Alessandro
last_name: Lupi
- first_name: Alberto
full_name: Mangiagli, Alberto
last_name: Mangiagli
- first_name: Lucio
full_name: Mayer, Lucio
last_name: Mayer
- first_name: Germano
full_name: Nardini, Germano
last_name: Nardini
- first_name: Fabio
full_name: Pacucci, Fabio
last_name: Pacucci
- first_name: Antoine
full_name: Petiteau, Antoine
last_name: Petiteau
- first_name: Alvise
full_name: Raccanelli, Alvise
last_name: Raccanelli
- first_name: Surjeet
full_name: Rajendran, Surjeet
last_name: Rajendran
- first_name: John
full_name: Regan, John
last_name: Regan
- first_name: Lijing
full_name: Shao, Lijing
last_name: Shao
- first_name: Alessandro
full_name: Spallicci, Alessandro
last_name: Spallicci
- first_name: Nicola
full_name: Tamanini, Nicola
last_name: Tamanini
- first_name: Marta
full_name: Volonteri, Marta
last_name: Volonteri
- first_name: Niels
full_name: Warburton, Niels
last_name: Warburton
- first_name: Kaze
full_name: Wong, Kaze
last_name: Wong
- first_name: Miguel
full_name: Zumalacarregui, Miguel
last_name: Zumalacarregui
citation:
ama: Sesana A, Korsakova N, Sedda MA, et al. Unveiling the gravitational universe
at μ-Hz frequencies. Experimental Astronomy. 2021;51(3):1333-1383. doi:10.1007/s10686-021-09709-9
apa: Sesana, A., Korsakova, N., Sedda, M. A., Baibhav, V., Barausse, E., Barke,
S., … Zumalacarregui, M. (2021). Unveiling the gravitational universe at μ-Hz
frequencies. Experimental Astronomy. Springer Science and Business Media
LLC. https://doi.org/10.1007/s10686-021-09709-9
chicago: Sesana, Alberto, Natalia Korsakova, Manuel Arca Sedda, Vishal Baibhav,
Enrico Barausse, Simon Barke, Emanuele Berti, et al. “Unveiling the Gravitational
Universe at μ-Hz Frequencies.” Experimental Astronomy. Springer Science
and Business Media LLC, 2021. https://doi.org/10.1007/s10686-021-09709-9.
ieee: A. Sesana et al., “Unveiling the gravitational universe at μ-Hz frequencies,”
Experimental Astronomy, vol. 51, no. 3. Springer Science and Business Media
LLC, pp. 1333–1383, 2021.
ista: Sesana A, Korsakova N, Sedda MA, Baibhav V, Barausse E, Barke S, Berti E,
Bonetti M, Capelo PR, Caprini C, Garcia-Bellido J, Haiman Z, Jani K, Jennrich
O, Johansson PH, Khan FM, Korol V, Lamberts A, Lupi A, Mangiagli A, Mayer L, Nardini
G, Pacucci F, Petiteau A, Raccanelli A, Rajendran S, Regan J, Shao L, Spallicci
A, Tamanini N, Volonteri M, Warburton N, Wong K, Zumalacarregui M. 2021. Unveiling
the gravitational universe at μ-Hz frequencies. Experimental Astronomy. 51(3),
1333–1383.
mla: Sesana, Alberto, et al. “Unveiling the Gravitational Universe at μ-Hz Frequencies.”
Experimental Astronomy, vol. 51, no. 3, Springer Science and Business Media
LLC, 2021, pp. 1333–83, doi:10.1007/s10686-021-09709-9.
short: A. Sesana, N. Korsakova, M.A. Sedda, V. Baibhav, E. Barausse, S. Barke, E.
Berti, M. Bonetti, P.R. Capelo, C. Caprini, J. Garcia-Bellido, Z. Haiman, K. Jani,
O. Jennrich, P.H. Johansson, F.M. Khan, V. Korol, A. Lamberts, A. Lupi, A. Mangiagli,
L. Mayer, G. Nardini, F. Pacucci, A. Petiteau, A. Raccanelli, S. Rajendran, J.
Regan, L. Shao, A. Spallicci, N. Tamanini, M. Volonteri, N. Warburton, K. Wong,
M. Zumalacarregui, Experimental Astronomy 51 (2021) 1333–1383.
date_created: 2024-09-05T09:42:29Z
date_published: 2021-09-04T00:00:00Z
date_updated: 2024-09-11T14:53:17Z
day: '04'
doi: 10.1007/s10686-021-09709-9
extern: '1'
intvolume: ' 51'
issue: '3'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://doi.org/10.1007/s10686-021-09709-9
month: '09'
oa: 1
oa_version: Published Version
page: 1333-1383
publication: Experimental Astronomy
publication_identifier:
issn:
- 0922-6435
- 1572-9508
publication_status: published
publisher: Springer Science and Business Media LLC
quality_controlled: '1'
scopus_import: '1'
status: public
title: Unveiling the gravitational universe at μ-Hz frequencies
type: journal_article
user_id: 317138e5-6ab7-11ef-aa6d-ffef3953e345
volume: 51
year: '2021'
...
---
_id: '17574'
abstract:
- lang: eng
text: As weak lensing surveys are becoming deeper and cover larger areas, information
will be available on small angular scales down to the arcmin level. To extract
this extra information, accurate modelling of baryonic effects is necessary. In
this work, we adopt a baryonic correction model, which includes gas both bound
inside and ejected from dark matter (DM) haloes, a central galaxy, and changes
in the DM profile induced by baryons. We use this model to incorporate baryons
into a large suite of DM-only N-body simulations, covering a grid of 75 cosmologies
in the Ωm–σ8 parameter space. We investigate how baryons affect Gaussian and non-Gaussian
weak lensing statistics and the cosmological parameter inferences from these statistics.
Our results show that marginalizing over baryonic parameters degrades the constraints
in Ωm–σ8 space by a factor of 2–5 compared to those with baryonic parameters fixed.
We also find that combining the lensing power spectrum and peak counts can break
the degeneracy between cosmological and baryonic parameters and mitigate the impact
of the uncertainty in baryonic physics.
article_processing_charge: No
article_type: original
author:
- first_name: Tianhuan
full_name: Lu, Tianhuan
last_name: Lu
- first_name: Zoltán
full_name: Haiman, Zoltán
id: 7c006e8c-cc0d-11ee-8322-cb904ef76f36
last_name: Haiman
citation:
ama: Lu T, Haiman Z. The impact of baryons on cosmological inference from weak lensing
statistics. Monthly Notices of the Royal Astronomical Society. 2021;506(3):3406-3417.
doi:10.1093/mnras/stab1978
apa: Lu, T., & Haiman, Z. (2021). The impact of baryons on cosmological inference
from weak lensing statistics. Monthly Notices of the Royal Astronomical Society.
Oxford University Press. https://doi.org/10.1093/mnras/stab1978
chicago: Lu, Tianhuan, and Zoltán Haiman. “The Impact of Baryons on Cosmological
Inference from Weak Lensing Statistics.” Monthly Notices of the Royal Astronomical
Society. Oxford University Press, 2021. https://doi.org/10.1093/mnras/stab1978.
ieee: T. Lu and Z. Haiman, “The impact of baryons on cosmological inference from
weak lensing statistics,” Monthly Notices of the Royal Astronomical Society,
vol. 506, no. 3. Oxford University Press, pp. 3406–3417, 2021.
ista: Lu T, Haiman Z. 2021. The impact of baryons on cosmological inference from
weak lensing statistics. Monthly Notices of the Royal Astronomical Society. 506(3),
3406–3417.
mla: Lu, Tianhuan, and Zoltán Haiman. “The Impact of Baryons on Cosmological Inference
from Weak Lensing Statistics.” Monthly Notices of the Royal Astronomical Society,
vol. 506, no. 3, Oxford University Press, 2021, pp. 3406–17, doi:10.1093/mnras/stab1978.
short: T. Lu, Z. Haiman, Monthly Notices of the Royal Astronomical Society 506 (2021)
3406–3417.
date_created: 2024-09-05T12:17:24Z
date_published: 2021-07-10T00:00:00Z
date_updated: 2024-09-19T07:43:16Z
day: '10'
doi: 10.1093/mnras/stab1978
extern: '1'
intvolume: ' 506'
issue: '3'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://doi.org/10.1093/mnras/stab1978
month: '07'
oa: 1
oa_version: Published Version
page: 3406-3417
publication: Monthly Notices of the Royal Astronomical Society
publication_identifier:
issn:
- 0035-8711
- 1365-2966
publication_status: published
publisher: Oxford University Press
quality_controlled: '1'
scopus_import: '1'
status: public
title: The impact of baryons on cosmological inference from weak lensing statistics
type: journal_article
user_id: 317138e5-6ab7-11ef-aa6d-ffef3953e345
volume: 506
year: '2021'
...
---
_id: '17577'
abstract:
- lang: eng
text: 'The Legacy Survey of Space and Time (LSST) by the Vera C. Rubin Observatory
is expected to discover tens of millions of quasars. A significant fraction of
these could be powered by coalescing massive black hole (MBH) binaries, since
many quasars are believed to be triggered by mergers. We show that under plausible
assumptions about the luminosity functions, lifetimes, and binary fractions of
quasars, we expect the full LSST quasar catalogue to contain between 20 and 100
million compact MBH binaries with masses M = 105–9M⊙, redshifts z = 0–6, and orbital
periods P = 1–70 d. Their light-curves are expected to be distinctly periodic,
which can be confidently distinguished from stochastic red-noise variability,
because LSST will cover dozens, or even hundreds of cycles. A very small subset
of 10–150 ultracompact (P ≲ 1 d) binary quasars among these will, over ∼5–15 yr,
evolve into the mHz gravitational-wave frequency band and can be detected by LISA.
They can therefore be regarded as ‘LISA verification binaries’, analogous to short-period
Galactic compact-object binaries. The practical question is how to find these
handful of ‘needles in the haystack’ among the large number of quasars: this will
likely require a tailored co-adding analysis optimized for this purpose.'
article_processing_charge: No
article_type: original
author:
- first_name: Chengcheng
full_name: Xin, Chengcheng
last_name: Xin
- first_name: Zoltán
full_name: Haiman, Zoltán
id: 7c006e8c-cc0d-11ee-8322-cb904ef76f36
last_name: Haiman
citation:
ama: Xin C, Haiman Z. Ultra-short-period massive black hole binary candidates in
LSST as LISA ‘verification binaries.’ Monthly Notices of the Royal Astronomical
Society. 2021;506(2):2408-2417. doi:10.1093/mnras/stab1856
apa: Xin, C., & Haiman, Z. (2021). Ultra-short-period massive black hole binary
candidates in LSST as LISA ‘verification binaries.’ Monthly Notices of the
Royal Astronomical Society. Oxford University Press. https://doi.org/10.1093/mnras/stab1856
chicago: Xin, Chengcheng, and Zoltán Haiman. “Ultra-Short-Period Massive Black Hole
Binary Candidates in LSST as LISA ‘Verification Binaries.’” Monthly Notices
of the Royal Astronomical Society. Oxford University Press, 2021. https://doi.org/10.1093/mnras/stab1856.
ieee: C. Xin and Z. Haiman, “Ultra-short-period massive black hole binary candidates
in LSST as LISA ‘verification binaries,’” Monthly Notices of the Royal Astronomical
Society, vol. 506, no. 2. Oxford University Press, pp. 2408–2417, 2021.
ista: Xin C, Haiman Z. 2021. Ultra-short-period massive black hole binary candidates
in LSST as LISA ‘verification binaries’. Monthly Notices of the Royal Astronomical
Society. 506(2), 2408–2417.
mla: Xin, Chengcheng, and Zoltán Haiman. “Ultra-Short-Period Massive Black Hole
Binary Candidates in LSST as LISA ‘Verification Binaries.’” Monthly Notices
of the Royal Astronomical Society, vol. 506, no. 2, Oxford University Press,
2021, pp. 2408–17, doi:10.1093/mnras/stab1856.
short: C. Xin, Z. Haiman, Monthly Notices of the Royal Astronomical Society 506
(2021) 2408–2417.
date_created: 2024-09-05T12:19:58Z
date_published: 2021-07-05T00:00:00Z
date_updated: 2024-09-19T08:07:41Z
day: '05'
doi: 10.1093/mnras/stab1856
extern: '1'
intvolume: ' 506'
issue: '2'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://doi.org/10.1093/mnras/stab1856
month: '07'
oa: 1
oa_version: Published Version
page: 2408-2417
publication: Monthly Notices of the Royal Astronomical Society
publication_identifier:
issn:
- 0035-8711
- 1365-2966
publication_status: published
publisher: Oxford University Press
quality_controlled: '1'
scopus_import: '1'
status: public
title: Ultra-short-period massive black hole binary candidates in LSST as LISA ‘verification
binaries’
type: journal_article
user_id: 317138e5-6ab7-11ef-aa6d-ffef3953e345
volume: 506
year: '2021'
...
---
_id: '17578'
abstract:
- lang: eng
text: "If primordial black holes (PBHs) seeded the supermassive black holes (SMBHs)
at the centers of high-redshift quasars, then the gas surrounding these black
holes may reveal nucleosynthetic clues to their primordial origins. We present
predictions of altered primordial abundances around PBHs massive enough to seed
SMBHs at \U0001D467≈6–7.5. We find that if PBHs with initial masses of ∼105 M⊙
are responsible for such SMBHs, they may produce primordial deuterium and Helium
fractions enhanced by ≥10%, and lithium abundance depleted by ≥10%, at distances
of up to ≈ a comoving kiloparsec away from the black hole after decoupling. We
estimate that ∼108 M⊙ of gas is enhanced (or depleted) by at least one percent.
Evidence of these modified primordial deuterium, helium, and lithium abundances
could still be present if this circum-PBH gas remains unaccreted by the SMBH and
in or near the host galaxies of high-redshift quasars. Measuring the abundance
anomalies will be challenging, but could offer a novel way to reveal the primordial
origin of such SMBH seeds."
article_number: '103022'
article_processing_charge: No
article_type: original
author:
- first_name: Phoebe Upton
full_name: Sanderbeck, Phoebe Upton
last_name: Sanderbeck
- first_name: Simeon
full_name: Bird, Simeon
last_name: Bird
- first_name: Zoltán
full_name: Haiman, Zoltán
id: 7c006e8c-cc0d-11ee-8322-cb904ef76f36
last_name: Haiman
citation:
ama: Sanderbeck PU, Bird S, Haiman Z. Nucleosynthetic signatures of primordial origin
around supermassive black holes. Physical Review D. 2021;104(10). doi:10.1103/physrevd.104.103022
apa: Sanderbeck, P. U., Bird, S., & Haiman, Z. (2021). Nucleosynthetic signatures
of primordial origin around supermassive black holes. Physical Review D.
American Physical Society. https://doi.org/10.1103/physrevd.104.103022
chicago: Sanderbeck, Phoebe Upton, Simeon Bird, and Zoltán Haiman. “Nucleosynthetic
Signatures of Primordial Origin around Supermassive Black Holes.” Physical
Review D. American Physical Society, 2021. https://doi.org/10.1103/physrevd.104.103022.
ieee: P. U. Sanderbeck, S. Bird, and Z. Haiman, “Nucleosynthetic signatures of primordial
origin around supermassive black holes,” Physical Review D, vol. 104, no.
10. American Physical Society, 2021.
ista: Sanderbeck PU, Bird S, Haiman Z. 2021. Nucleosynthetic signatures of primordial
origin around supermassive black holes. Physical Review D. 104(10), 103022.
mla: Sanderbeck, Phoebe Upton, et al. “Nucleosynthetic Signatures of Primordial
Origin around Supermassive Black Holes.” Physical Review D, vol. 104, no.
10, 103022, American Physical Society, 2021, doi:10.1103/physrevd.104.103022.
short: P.U. Sanderbeck, S. Bird, Z. Haiman, Physical Review D 104 (2021).
date_created: 2024-09-05T12:20:50Z
date_published: 2021-11-17T00:00:00Z
date_updated: 2024-09-19T08:12:35Z
day: '17'
doi: 10.1103/physrevd.104.103022
extern: '1'
intvolume: ' 104'
issue: '10'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://doi.org/10.1103/physrevd.104.103022
month: '11'
oa: 1
oa_version: Published Version
publication: Physical Review D
publication_identifier:
issn:
- 2470-0010
- 2470-0029
publication_status: published
publisher: American Physical Society
quality_controlled: '1'
scopus_import: '1'
status: public
title: Nucleosynthetic signatures of primordial origin around supermassive black holes
type: journal_article
user_id: 317138e5-6ab7-11ef-aa6d-ffef3953e345
volume: 104
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'
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: '17585'
abstract:
- lang: eng
text: Recent gravitational wave (GW) observations by LIGO/Virgo show evidence for
hierarchical mergers, where the merging BHs are the remnants of previous BH merger
events. These events may carry important clues about the astrophysical host environments
of the GW sources. In this paper, we present the distributions of the effective
spin parameter (χeff), the precession spin parameter (χp), and the chirp mass
(mchirp) expected in hierarchical mergers. Under a wide range of assumptions,
hierarchical mergers produce (i) a monotonic increase of the average of the typical
total spin for merging binaries, which we characterize with χ¯typ≡(χ2eff+χ2p)1/2¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯,
up to roughly the maximum mchirp among first-generation (1g) BHs, and (ii) a plateau
at χ¯typ∼0.6 at higher mchirp. We suggest that the maximum mass and typical spin
magnitudes for 1g BHs can be estimated from χ¯typ as a function of mchirp. The
GW data observed in LIGO/Virgo O1--O3a prefers an increase in χ¯typ at low mchirp,
which is consistent with the growth of the BH spin magnitude by hierarchical mergers,
at ∼2σ confidence. A Bayesian analysis suggests that 1g BHs have the maximum mass
of ∼15--30M⊙ if the majority of mergers are of high-generation BHs (not among
1g-1g BHs), which is consistent with mergers in active galactic nucleus disks
and/or nuclear star clusters, while if mergers mainly originate from globular
clusters, 1g BHs are favored to have non-zero spin magnitudes of ∼0.3. We also
forecast that signatures for hierarchical mergers in the χ¯typ distribution can
be confidently recovered once the number of GW events increases to ≳O(100).
article_processing_charge: No
article_type: original
author:
- first_name: Hiromichi
full_name: Tagawa, Hiromichi
last_name: Tagawa
- 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: Bence
full_name: Kocsis, Bence
last_name: Kocsis
- first_name: Kazuyuki
full_name: Omukai, Kazuyuki
last_name: Omukai
citation:
ama: Tagawa H, Haiman Z, Bartos I, Kocsis B, Omukai K. Signatures of hierarchical
mergers in black hole spin and mass distribution. Monthly Notices of the Royal
Astronomical Society. 2021;507(3):3362-3380. doi:10.1093/mnras/stab2315
apa: Tagawa, H., Haiman, Z., Bartos, I., Kocsis, B., & Omukai, K. (2021). Signatures
of hierarchical mergers in black hole spin and mass distribution. Monthly Notices
of the Royal Astronomical Society. Oxford University Press. https://doi.org/10.1093/mnras/stab2315
chicago: Tagawa, Hiromichi, Zoltán Haiman, Imre Bartos, Bence Kocsis, and Kazuyuki
Omukai. “Signatures of Hierarchical Mergers in Black Hole Spin and Mass Distribution.”
Monthly Notices of the Royal Astronomical Society. Oxford University Press,
2021. https://doi.org/10.1093/mnras/stab2315.
ieee: H. Tagawa, Z. Haiman, I. Bartos, B. Kocsis, and K. Omukai, “Signatures of
hierarchical mergers in black hole spin and mass distribution,” Monthly Notices
of the Royal Astronomical Society, vol. 507, no. 3. Oxford University Press,
pp. 3362–3380, 2021.
ista: Tagawa H, Haiman Z, Bartos I, Kocsis B, Omukai K. 2021. Signatures of hierarchical
mergers in black hole spin and mass distribution. Monthly Notices of the Royal
Astronomical Society. 507(3), 3362–3380.
mla: Tagawa, Hiromichi, et al. “Signatures of Hierarchical Mergers in Black Hole
Spin and Mass Distribution.” Monthly Notices of the Royal Astronomical Society,
vol. 507, no. 3, Oxford University Press, 2021, pp. 3362–80, doi:10.1093/mnras/stab2315.
short: H. Tagawa, Z. Haiman, I. Bartos, B. Kocsis, K. Omukai, Monthly Notices of
the Royal Astronomical Society 507 (2021) 3362–3380.
date_created: 2024-09-05T12:30:08Z
date_published: 2021-08-13T00:00:00Z
date_updated: 2024-09-19T11:50:46Z
day: '13'
doi: 10.1093/mnras/stab2315
extern: '1'
intvolume: ' 507'
issue: '3'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://doi.org/10.1093/mnras/stab2315
month: '08'
oa: 1
oa_version: Published Version
page: 3362-3380
publication: Monthly Notices of the Royal Astronomical Society
publication_identifier:
issn:
- 0035-8711
- 1365-2966
publication_status: published
publisher: Oxford University Press
quality_controlled: '1'
scopus_import: '1'
status: public
title: Signatures of hierarchical mergers in black hole spin and mass distribution
type: journal_article
user_id: 317138e5-6ab7-11ef-aa6d-ffef3953e345
volume: 507
year: '2021'
...
---
_id: '17586'
abstract:
- lang: eng
text: Variable active galactic nuclei showing periodic light curves have been proposed
as massive black hole binary (MBHB) candidates. In such scenarios, the periodicity
can be due to relativistic Doppler-boosting of the emitted light. This hypothesis
can be tested through the timing of scattered polarized light. Following the results
of polarization studies in type I nuclei and of dynamical studies of MBHBs with
circumbinary discs, we assume a coplanar equatorial scattering ring, whose elements
contribute differently to the total polarized flux, due to different scattering
angles, levels of Doppler boost, and line-of-sight time delays. We find that in
the presence of an MBHB, both the degree of polarization and the polarization
position angle have periodic modulations. The polarization angle oscillates around
the semiminor axis of the projected MBHB orbital ellipse, with a frequency equal
either to the binary’s orbital frequency (for large scattering screen radii),
or twice this value (for smaller scattering structures). These distinctive features
can be used to probe the nature of periodic MBHB candidates and to compile catalogues
of the most promising sub-pc MBHBs. The identification of such polarization features
in gravitational-wave (GW) detected MBHBs would enormously increase the amount
of physical information about the sources, allowing the measurement of the individual
masses of the binary components, and the orientation of the line of nodes on the
sky, even for monochromatic GW signals.
article_processing_charge: No
article_type: original
author:
- first_name: Massimo
full_name: Dotti, Massimo
last_name: Dotti
- first_name: Matteo
full_name: Bonetti, Matteo
last_name: Bonetti
- first_name: Daniel J
full_name: D’Orazio, Daniel J
last_name: D’Orazio
- first_name: Zoltán
full_name: Haiman, Zoltán
id: 7c006e8c-cc0d-11ee-8322-cb904ef76f36
last_name: Haiman
- first_name: Luis C
full_name: Ho, Luis C
last_name: Ho
citation:
ama: Dotti M, Bonetti M, D’Orazio DJ, Haiman Z, Ho LC. Binary black hole signatures
in polarized light curves. Monthly Notices of the Royal Astronomical Society.
2021;509(1):212-223. doi:10.1093/mnras/stab2893
apa: Dotti, M., Bonetti, M., D’Orazio, D. J., Haiman, Z., & Ho, L. C. (2021).
Binary black hole signatures in polarized light curves. Monthly Notices of
the Royal Astronomical Society. Oxford University Press. https://doi.org/10.1093/mnras/stab2893
chicago: Dotti, Massimo, Matteo Bonetti, Daniel J D’Orazio, Zoltán Haiman, and Luis
C Ho. “Binary Black Hole Signatures in Polarized Light Curves.” Monthly Notices
of the Royal Astronomical Society. Oxford University Press, 2021. https://doi.org/10.1093/mnras/stab2893.
ieee: M. Dotti, M. Bonetti, D. J. D’Orazio, Z. Haiman, and L. C. Ho, “Binary black
hole signatures in polarized light curves,” Monthly Notices of the Royal Astronomical
Society, vol. 509, no. 1. Oxford University Press, pp. 212–223, 2021.
ista: Dotti M, Bonetti M, D’Orazio DJ, Haiman Z, Ho LC. 2021. Binary black hole
signatures in polarized light curves. Monthly Notices of the Royal Astronomical
Society. 509(1), 212–223.
mla: Dotti, Massimo, et al. “Binary Black Hole Signatures in Polarized Light Curves.”
Monthly Notices of the Royal Astronomical Society, vol. 509, no. 1, Oxford
University Press, 2021, pp. 212–23, doi:10.1093/mnras/stab2893.
short: M. Dotti, M. Bonetti, D.J. D’Orazio, Z. Haiman, L.C. Ho, Monthly Notices
of the Royal Astronomical Society 509 (2021) 212–223.
date_created: 2024-09-05T12:32:01Z
date_published: 2021-10-07T00:00:00Z
date_updated: 2024-09-19T11:55:01Z
day: '07'
doi: 10.1093/mnras/stab2893
extern: '1'
intvolume: ' 509'
issue: '1'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://doi.org/10.1093/mnras/stab2893
month: '10'
oa: 1
oa_version: Published Version
page: 212-223
publication: Monthly Notices of the Royal Astronomical Society
publication_identifier:
issn:
- 0035-8711
- 1365-2966
publication_status: published
publisher: Oxford University Press
quality_controlled: '1'
scopus_import: '1'
status: public
title: Binary black hole signatures in polarized light curves
type: journal_article
user_id: 317138e5-6ab7-11ef-aa6d-ffef3953e345
volume: 509
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'
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'
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: '17593'
abstract:
- lang: eng
text: The science objectives of the LISA mission have been defined under the implicit
assumption of a 4-years continuous data stream. Based on the performance of LISA
Pathfinder, it is now expected that LISA will have a duty cycle of ≈0.75 , which
would reduce the effective span of usable data to 3 years. This paper reports
the results of a study by the LISA Science Group, which was charged with assessing
the additional science return of increasing the mission lifetime. We explore various
observational scenarios to assess the impact of mission duration on the main science
objectives of the mission. We find that the science investigations most affected
by mission duration concern the search for seed black holes at cosmic dawn, as
well as the study of stellar-origin black holes and of their formation channels
via multi-band and multi-messenger observations. We conclude that an extension
to 6 years of mission operations is recommended.
article_number: '3'
article_processing_charge: No
article_type: original
author:
- first_name: Pau
full_name: Amaro Seoane, Pau
last_name: Amaro Seoane
- first_name: Manuel
full_name: Arca Sedda, Manuel
last_name: Arca Sedda
- first_name: Stanislav
full_name: Babak, Stanislav
last_name: Babak
- first_name: Christopher P. L.
full_name: Berry, Christopher P. L.
last_name: Berry
- first_name: Emanuele
full_name: Berti, Emanuele
last_name: Berti
- first_name: Gianfranco
full_name: Bertone, Gianfranco
last_name: Bertone
- first_name: Diego
full_name: Blas, Diego
last_name: Blas
- first_name: Tamara
full_name: Bogdanović, Tamara
last_name: Bogdanović
- first_name: Matteo
full_name: Bonetti, Matteo
last_name: Bonetti
- first_name: Katelyn
full_name: Breivik, Katelyn
last_name: Breivik
- first_name: Richard
full_name: Brito, Richard
last_name: Brito
- first_name: Robert
full_name: Caldwell, Robert
last_name: Caldwell
- first_name: Pedro R.
full_name: Capelo, Pedro R.
last_name: Capelo
- first_name: Chiara
full_name: Caprini, Chiara
last_name: Caprini
- first_name: Vitor
full_name: Cardoso, Vitor
last_name: Cardoso
- first_name: Zack
full_name: Carson, Zack
last_name: Carson
- first_name: Hsin-Yu
full_name: Chen, Hsin-Yu
last_name: Chen
- first_name: Alvin J. K.
full_name: Chua, Alvin J. K.
last_name: Chua
- first_name: Irina
full_name: Dvorkin, Irina
last_name: Dvorkin
- first_name: Zoltán
full_name: Haiman, Zoltán
id: 7c006e8c-cc0d-11ee-8322-cb904ef76f36
last_name: Haiman
- first_name: Lavinia
full_name: Heisenberg, Lavinia
last_name: Heisenberg
- first_name: Maximiliano
full_name: Isi, Maximiliano
last_name: Isi
- first_name: Nikolaos
full_name: Karnesis, Nikolaos
last_name: Karnesis
- first_name: Bradley J.
full_name: Kavanagh, Bradley J.
last_name: Kavanagh
- first_name: Tyson B.
full_name: Littenberg, Tyson B.
last_name: Littenberg
- first_name: Alberto
full_name: Mangiagli, Alberto
last_name: Mangiagli
- first_name: Paolo
full_name: Marcoccia, Paolo
last_name: Marcoccia
- first_name: Andrea
full_name: Maselli, Andrea
last_name: Maselli
- first_name: Germano
full_name: Nardini, Germano
last_name: Nardini
- first_name: Paolo
full_name: Pani, Paolo
last_name: Pani
- first_name: Marco
full_name: Peloso, Marco
last_name: Peloso
- first_name: Mauro
full_name: Pieroni, Mauro
last_name: Pieroni
- first_name: Angelo
full_name: Ricciardone, Angelo
last_name: Ricciardone
- first_name: Alberto
full_name: Sesana, Alberto
last_name: Sesana
- first_name: Nicola
full_name: Tamanini, Nicola
last_name: Tamanini
- first_name: Alexandre
full_name: Toubiana, Alexandre
last_name: Toubiana
- first_name: Rosa
full_name: Valiante, Rosa
last_name: Valiante
- first_name: Stamatis
full_name: Vretinaris, Stamatis
last_name: Vretinaris
- first_name: David J.
full_name: Weir, David J.
last_name: Weir
- first_name: Kent
full_name: Yagi, Kent
last_name: Yagi
- first_name: Aaron
full_name: Zimmerman, Aaron
last_name: Zimmerman
citation:
ama: Amaro Seoane P, Arca Sedda M, Babak S, et al. The effect of mission duration
on LISA science objectives. General Relativity and Gravitation. 2021;54(1).
doi:10.1007/s10714-021-02889-x
apa: Amaro Seoane, P., Arca Sedda, M., Babak, S., Berry, C. P. L., Berti, E., Bertone,
G., … Zimmerman, A. (2021). The effect of mission duration on LISA science objectives.
General Relativity and Gravitation. Springer Science and Business Media
LLC. https://doi.org/10.1007/s10714-021-02889-x
chicago: Amaro Seoane, Pau, Manuel Arca Sedda, Stanislav Babak, Christopher P. L.
Berry, Emanuele Berti, Gianfranco Bertone, Diego Blas, et al. “The Effect of Mission
Duration on LISA Science Objectives.” General Relativity and Gravitation.
Springer Science and Business Media LLC, 2021. https://doi.org/10.1007/s10714-021-02889-x.
ieee: P. Amaro Seoane et al., “The effect of mission duration on LISA science
objectives,” General Relativity and Gravitation, vol. 54, no. 1. Springer
Science and Business Media LLC, 2021.
ista: Amaro Seoane P, Arca Sedda M, Babak S, Berry CPL, Berti E, Bertone G, Blas
D, Bogdanović T, Bonetti M, Breivik K, Brito R, Caldwell R, Capelo PR, Caprini
C, Cardoso V, Carson Z, Chen H-Y, Chua AJK, Dvorkin I, Haiman Z, Heisenberg L,
Isi M, Karnesis N, Kavanagh BJ, Littenberg TB, Mangiagli A, Marcoccia P, Maselli
A, Nardini G, Pani P, Peloso M, Pieroni M, Ricciardone A, Sesana A, Tamanini N,
Toubiana A, Valiante R, Vretinaris S, Weir DJ, Yagi K, Zimmerman A. 2021. The
effect of mission duration on LISA science objectives. General Relativity and
Gravitation. 54(1), 3.
mla: Amaro Seoane, Pau, et al. “The Effect of Mission Duration on LISA Science Objectives.”
General Relativity and Gravitation, vol. 54, no. 1, 3, Springer Science
and Business Media LLC, 2021, doi:10.1007/s10714-021-02889-x.
short: P. Amaro Seoane, M. Arca Sedda, S. Babak, C.P.L. Berry, E. Berti, G. Bertone,
D. Blas, T. Bogdanović, M. Bonetti, K. Breivik, R. Brito, R. Caldwell, P.R. Capelo,
C. Caprini, V. Cardoso, Z. Carson, H.-Y. Chen, A.J.K. Chua, I. Dvorkin, Z. Haiman,
L. Heisenberg, M. Isi, N. Karnesis, B.J. Kavanagh, T.B. Littenberg, A. Mangiagli,
P. Marcoccia, A. Maselli, G. Nardini, P. Pani, M. Peloso, M. Pieroni, A. Ricciardone,
A. Sesana, N. Tamanini, A. Toubiana, R. Valiante, S. Vretinaris, D.J. Weir, K.
Yagi, A. Zimmerman, General Relativity and Gravitation 54 (2021).
date_created: 2024-09-05T12:40:14Z
date_published: 2021-12-27T00:00:00Z
date_updated: 2024-09-23T12:32:50Z
day: '27'
doi: 10.1007/s10714-021-02889-x
extern: '1'
intvolume: ' 54'
issue: '1'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://doi.org/10.1007/s10714-021-02889-x
month: '12'
oa: 1
oa_version: Published Version
publication: General Relativity and Gravitation
publication_identifier:
issn:
- 0001-7701
- 1572-9532
publication_status: published
publisher: Springer Science and Business Media LLC
quality_controlled: '1'
scopus_import: '1'
status: public
title: The effect of mission duration on LISA science objectives
type: journal_article
user_id: 317138e5-6ab7-11ef-aa6d-ffef3953e345
volume: 54
year: '2021'
...
---
_id: '17598'
abstract:
- lang: eng
text: The successive discoveries of binary merger events by Advanced LIGO-Virgo
have been revealing the statistical properties of binary black hole (BBH) populations.
A stochastic gravitational wave background (GWB) is a useful tool to probe the
cosmological evolution of those compact mergers. In this paper, we study the upper
bound on a GWB produced by BBH mergers, whose stellar progenitors dominate the
reionization process at the cosmic dawn. Since early reionization by those progenitors
yields a high optical depth of the universe inconsistent with the {\it Planck}
measurements, the cumulative mass density is limited to ρ⋆≲107 M⊙ Mpc−3. Even
with this upper bound, the amplitude of a GWB owing to the high-z BBH mergers
is expected to be as high as Ωgw≃1.48+1.80−1.27×10−9 at f≃25 Hz, while their merger
rate at the present-day is consistent or lower than the observed GW event rate.
This level of GWB is detectable at the design sensitivity of Advanced LIGO-Virgo
and would indicate a major contribution of the high-z BBH population to the local
GW events. The spectral index is expected to be substantially flatter than the
canonical value of ≃2/3 generically produced by lower-redshift and less massive
BBHs. Moreover, if their mass function is more top-heavy than in the local universe,
the GWB spectrum is even more skewed toward lower frequencies, which would allow
us to extract information on the mass function of merging BBHs at high redshifts.
article_number: '41'
article_processing_charge: No
article_type: original
arxiv: 1
author:
- first_name: Kohei
full_name: Inayoshi, Kohei
last_name: Inayoshi
- first_name: Kazumi
full_name: Kashiyama, Kazumi
last_name: Kashiyama
- first_name: Eli
full_name: Visbal, Eli
last_name: Visbal
- first_name: Zoltán
full_name: Haiman, Zoltán
id: 7c006e8c-cc0d-11ee-8322-cb904ef76f36
last_name: Haiman
citation:
ama: 'Inayoshi K, Kashiyama K, Visbal E, Haiman Z. Gravitational wave backgrounds
from coalescing black hole binaries at cosmic dawn: An upper bound. The Astrophysical
Journal. 2021;919(1). doi:10.3847/1538-4357/ac106d'
apa: 'Inayoshi, K., Kashiyama, K., Visbal, E., & Haiman, Z. (2021). Gravitational
wave backgrounds from coalescing black hole binaries at cosmic dawn: An upper
bound. The Astrophysical Journal. American Astronomical Society. https://doi.org/10.3847/1538-4357/ac106d'
chicago: 'Inayoshi, Kohei, Kazumi Kashiyama, Eli Visbal, and Zoltán Haiman. “Gravitational
Wave Backgrounds from Coalescing Black Hole Binaries at Cosmic Dawn: An Upper
Bound.” The Astrophysical Journal. American Astronomical Society, 2021.
https://doi.org/10.3847/1538-4357/ac106d.'
ieee: 'K. Inayoshi, K. Kashiyama, E. Visbal, and Z. Haiman, “Gravitational wave
backgrounds from coalescing black hole binaries at cosmic dawn: An upper bound,”
The Astrophysical Journal, vol. 919, no. 1. American Astronomical Society,
2021.'
ista: 'Inayoshi K, Kashiyama K, Visbal E, Haiman Z. 2021. Gravitational wave backgrounds
from coalescing black hole binaries at cosmic dawn: An upper bound. The Astrophysical
Journal. 919(1), 41.'
mla: 'Inayoshi, Kohei, et al. “Gravitational Wave Backgrounds from Coalescing Black
Hole Binaries at Cosmic Dawn: An Upper Bound.” The Astrophysical Journal,
vol. 919, no. 1, 41, American Astronomical Society, 2021, doi:10.3847/1538-4357/ac106d.'
short: K. Inayoshi, K. Kashiyama, E. Visbal, Z. Haiman, The Astrophysical Journal
919 (2021).
date_created: 2024-09-05T12:46:25Z
date_published: 2021-09-22T00:00:00Z
date_updated: 2024-09-23T13:08:15Z
day: '22'
doi: 10.3847/1538-4357/ac106d
extern: '1'
external_id:
arxiv:
- '2103.12755'
intvolume: ' 919'
issue: '1'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: ' https://doi.org/10.48550/arXiv.2103.12755'
month: '09'
oa: 1
oa_version: Preprint
publication: The Astrophysical Journal
publication_identifier:
issn:
- 0004-637X
- 1538-4357
publication_status: published
publisher: American Astronomical Society
quality_controlled: '1'
scopus_import: '1'
status: public
title: 'Gravitational wave backgrounds from coalescing black hole binaries at cosmic
dawn: An upper bound'
type: journal_article
user_id: 317138e5-6ab7-11ef-aa6d-ffef3953e345
volume: 919
year: '2021'
...
---
_id: '17610'
abstract:
- lang: eng
text: 'The presence of massive black holes (BHs) with masses of order 109M⊙, powering
bright quasars when the Universe was less than 1 Gyr old, poses strong constraints
on their formation mechanism. Several scenarios have been proposed to date to
explain massive BH formation, from the low-mass seed BH remnants of the first
generation of stars to the massive seed BHs resulting from the rapid collapse
of massive gas clouds. However, the plausibility of some of these scenarios to
occur within the progenitors of high-z quasars has not yet been thoroughly explored.
In this work, we investigate, by combining dark-matter only N-body simulations
with a semi-analytic framework, whether the conditions for the formation of massive
seed BHs from synchronised atomic-cooling halo pairs and/or dynamically-heated
mini-haloes are fulfilled in the overdense regions where the progenitors of a
typical high-redshift quasar host form and evolve. Our analysis shows that the
peculiar conditions in such regions, i.e. strong halo clustering and high star
formation rates, are crucial to produce a non-negligible number of massive seed
BH host candidates: we find ≈1400 dynamically heated metal-free mini-haloes, including
one of these which evolves to a synchronised pair and ends up in the massive quasar-host
halo by z=6. This demonstrates that the progenitors of high-redshift quasar host
haloes can harbour early massive seed BHs. Our results further suggest that multiple
massive seed BHs may form in or near the quasar host''s progenitors, potentially
merging at lower redshifts and yielding gravitational wave events.'
article_processing_charge: No
article_type: original
arxiv: 1
author:
- first_name: Alessandro
full_name: Lupi, Alessandro
last_name: Lupi
- first_name: Zoltán
full_name: Haiman, Zoltán
id: 7c006e8c-cc0d-11ee-8322-cb904ef76f36
last_name: Haiman
- first_name: Marta
full_name: Volonteri, Marta
last_name: Volonteri
citation:
ama: Lupi A, Haiman Z, Volonteri M. Forming massive seed black holes in high-redshift
quasar host progenitors. Monthly Notices of the Royal Astronomical Society.
2021;503(4):5046-5060. doi:10.1093/mnras/stab692
apa: Lupi, A., Haiman, Z., & Volonteri, M. (2021). Forming massive seed black
holes in high-redshift quasar host progenitors. Monthly Notices of the Royal
Astronomical Society. Oxford University Press. https://doi.org/10.1093/mnras/stab692
chicago: Lupi, Alessandro, Zoltán Haiman, and Marta Volonteri. “Forming Massive
Seed Black Holes in High-Redshift Quasar Host Progenitors.” Monthly Notices
of the Royal Astronomical Society. Oxford University Press, 2021. https://doi.org/10.1093/mnras/stab692.
ieee: A. Lupi, Z. Haiman, and M. Volonteri, “Forming massive seed black holes in
high-redshift quasar host progenitors,” Monthly Notices of the Royal Astronomical
Society, vol. 503, no. 4. Oxford University Press, pp. 5046–5060, 2021.
ista: Lupi A, Haiman Z, Volonteri M. 2021. Forming massive seed black holes in high-redshift
quasar host progenitors. Monthly Notices of the Royal Astronomical Society. 503(4),
5046–5060.
mla: Lupi, Alessandro, et al. “Forming Massive Seed Black Holes in High-Redshift
Quasar Host Progenitors.” Monthly Notices of the Royal Astronomical Society,
vol. 503, no. 4, Oxford University Press, 2021, pp. 5046–60, doi:10.1093/mnras/stab692.
short: A. Lupi, Z. Haiman, M. Volonteri, Monthly Notices of the Royal Astronomical
Society 503 (2021) 5046–5060.
date_created: 2024-09-05T13:22:23Z
date_published: 2021-03-24T00:00:00Z
date_updated: 2024-09-23T14:49:49Z
day: '24'
doi: 10.1093/mnras/stab692
extern: '1'
external_id:
arxiv:
- '2102.05051'
intvolume: ' 503'
issue: '4'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: ' https://doi.org/10.48550/arXiv.2102.05051'
month: '03'
oa: 1
oa_version: Preprint
page: 5046-5060
publication: Monthly Notices of the Royal Astronomical Society
publication_identifier:
issn:
- 0035-8711
- 1365-2966
publication_status: published
publisher: Oxford University Press
quality_controlled: '1'
scopus_import: '1'
status: public
title: Forming massive seed black holes in high-redshift quasar host progenitors
type: journal_article
user_id: 317138e5-6ab7-11ef-aa6d-ffef3953e345
volume: 503
year: '2021'
...
---
DOAJ_listed: '1'
OA_place: publisher
OA_type: gold
_id: '17899'
abstract:
- lang: eng
text: Designing highly insulating sub-nanometer molecules is difficult because tunneling
conductance increases exponentially with decreasing molecular length. This challenge
is further enhanced by the fact that most molecules cannot achieve full conductance
suppression with destructive quantum interference. Here, we present results for
a series of small saturated heterocyclic alkanes where we show that conductance
is suppressed due to destructive interference. Using the STM-BJ technique and
density functional theory calculations, we confirm that their single-molecule
junction conductance is lower than analogous alkanes of similar length. We rationalize
the suppression of conductance in the junctions through analysis of the computed
ballistic current density. We find there are highly symmetric ring currents, which
reverse direction at the antiresonance in the Landauer transmission near the Fermi
energy. This pattern has not been seen in earlier studies of larger bicyclic systems
exhibiting interference effects and constitutes clear-cut evidence of destructive
σ-interference. The finding of heterocyclic alkanes with destructive quantum interference
charts a pathway for chemical design of short molecular insulators using organic
molecules.
article_processing_charge: Yes
article_type: original
author:
- first_name: Boyuan
full_name: Zhang, Boyuan
last_name: Zhang
- first_name: Marc H.
full_name: Garner, Marc H.
last_name: Garner
- first_name: Liang
full_name: Li, Liang
last_name: Li
- first_name: Luis M.
full_name: Campos, Luis M.
last_name: Campos
- first_name: Gemma C.
full_name: Solomon, Gemma C.
last_name: Solomon
- first_name: Latha
full_name: Venkataraman, Latha
id: 9ebb78a5-cc0d-11ee-8322-fae086a32caf
last_name: Venkataraman
orcid: 0000-0002-6957-6089
citation:
ama: 'Zhang B, Garner MH, Li L, Campos LM, Solomon GC, Venkataraman L. Destructive
quantum interference in heterocyclic alkanes: The search for ultra-short molecular
insulators. Chemical Science. 2021;12(30):10299-10305. doi:10.1039/d1sc02287c'
apa: 'Zhang, B., Garner, M. H., Li, L., Campos, L. M., Solomon, G. C., & Venkataraman,
L. (2021). Destructive quantum interference in heterocyclic alkanes: The search
for ultra-short molecular insulators. Chemical Science. Royal Society of
Chemistry. https://doi.org/10.1039/d1sc02287c'
chicago: 'Zhang, Boyuan, Marc H. Garner, Liang Li, Luis M. Campos, Gemma C. Solomon,
and Latha Venkataraman. “Destructive Quantum Interference in Heterocyclic Alkanes:
The Search for Ultra-Short Molecular Insulators.” Chemical Science. Royal
Society of Chemistry, 2021. https://doi.org/10.1039/d1sc02287c.'
ieee: 'B. Zhang, M. H. Garner, L. Li, L. M. Campos, G. C. Solomon, and L. Venkataraman,
“Destructive quantum interference in heterocyclic alkanes: The search for ultra-short
molecular insulators,” Chemical Science, vol. 12, no. 30. Royal Society
of Chemistry, pp. 10299–10305, 2021.'
ista: 'Zhang B, Garner MH, Li L, Campos LM, Solomon GC, Venkataraman L. 2021. Destructive
quantum interference in heterocyclic alkanes: The search for ultra-short molecular
insulators. Chemical Science. 12(30), 10299–10305.'
mla: 'Zhang, Boyuan, et al. “Destructive Quantum Interference in Heterocyclic Alkanes:
The Search for Ultra-Short Molecular Insulators.” Chemical Science, vol.
12, no. 30, Royal Society of Chemistry, 2021, pp. 10299–305, doi:10.1039/d1sc02287c.'
short: B. Zhang, M.H. Garner, L. Li, L.M. Campos, G.C. Solomon, L. Venkataraman,
Chemical Science 12 (2021) 10299–10305.
date_created: 2024-09-09T06:42:54Z
date_published: 2021-06-30T00:00:00Z
date_updated: 2024-12-10T10:11:16Z
day: '30'
doi: 10.1039/d1sc02287c
extern: '1'
external_id:
pmid:
- '34476051'
intvolume: ' 12'
issue: '30'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://doi.org/10.1039/D1SC02287C
month: '06'
oa: 1
oa_version: Published Version
page: 10299-10305
pmid: 1
publication: Chemical Science
publication_identifier:
eissn:
- 2041-6539
issn:
- 2041-6520
publication_status: published
publisher: Royal Society of Chemistry
quality_controlled: '1'
scopus_import: '1'
status: public
title: 'Destructive quantum interference in heterocyclic alkanes: The search for ultra-short
molecular insulators'
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 12
year: '2021'
...
---
_id: '18192'
abstract:
- lang: eng
text: Current quantum simulation experiments are starting to explore nonequilibrium
many-body dynamics in previously inaccessible regimes in terms of system sizes
and timescales. Therefore, the question emerges as to which observables are best
suited to study the dynamics in such quantum many-body systems. Using machine
learning techniques, we investigate the dynamics and, in particular, the thermalization
behavior of an interacting quantum system that undergoes a nonequilibrium phase
transition from an ergodic to a many-body localized phase. We employ supervised
and unsupervised training methods to distinguish nonequilibrium from equilibrium
data, using the network performance as a probe for the thermalization behavior
of the system. We test our methods with experimental snapshots of ultracold atoms
taken with a quantum gas microscope. Our results provide a path to analyze highly
entangled large-scale quantum states for system sizes where numerical calculations
of conventional observables become challenging.
article_number: '150504'
article_processing_charge: No
article_type: original
arxiv: 1
author:
- first_name: A.
full_name: Bohrdt, A.
last_name: Bohrdt
- first_name: S.
full_name: Kim, S.
last_name: Kim
- first_name: A.
full_name: Lukin, A.
last_name: Lukin
- first_name: M.
full_name: Rispoli, M.
last_name: Rispoli
- first_name: R.
full_name: Schittko, R.
last_name: Schittko
- first_name: M.
full_name: Knap, M.
last_name: Knap
- first_name: M.
full_name: Greiner, M.
last_name: Greiner
- first_name: Julian
full_name: Leonard, Julian
id: b75b3f45-7995-11ef-9bfd-9a9cd02c3577
last_name: Leonard
citation:
ama: Bohrdt A, Kim S, Lukin A, et al. Analyzing nonequilibrium quantum states through
snapshots with artificial neural networks. Physical Review Letters. 2021;127(15).
doi:10.1103/physrevlett.127.150504
apa: Bohrdt, A., Kim, S., Lukin, A., Rispoli, M., Schittko, R., Knap, M., … Leonard,
J. (2021). Analyzing nonequilibrium quantum states through snapshots with artificial
neural networks. Physical Review Letters. American Physical Society. https://doi.org/10.1103/physrevlett.127.150504
chicago: Bohrdt, A., S. Kim, A. Lukin, M. Rispoli, R. Schittko, M. Knap, M. Greiner,
and Julian Leonard. “Analyzing Nonequilibrium Quantum States through Snapshots
with Artificial Neural Networks.” Physical Review Letters. American Physical
Society, 2021. https://doi.org/10.1103/physrevlett.127.150504.
ieee: A. Bohrdt et al., “Analyzing nonequilibrium quantum states through
snapshots with artificial neural networks,” Physical Review Letters, vol.
127, no. 15. American Physical Society, 2021.
ista: Bohrdt A, Kim S, Lukin A, Rispoli M, Schittko R, Knap M, Greiner M, Leonard
J. 2021. Analyzing nonequilibrium quantum states through snapshots with artificial
neural networks. Physical Review Letters. 127(15), 150504.
mla: Bohrdt, A., et al. “Analyzing Nonequilibrium Quantum States through Snapshots
with Artificial Neural Networks.” Physical Review Letters, vol. 127, no.
15, 150504, American Physical Society, 2021, doi:10.1103/physrevlett.127.150504.
short: A. Bohrdt, S. Kim, A. Lukin, M. Rispoli, R. Schittko, M. Knap, M. Greiner,
J. Leonard, Physical Review Letters 127 (2021).
date_created: 2024-10-07T11:47:11Z
date_published: 2021-10-08T00:00:00Z
date_updated: 2024-10-08T09:58:03Z
day: '08'
doi: 10.1103/physrevlett.127.150504
extern: '1'
external_id:
arxiv:
- '2012.11586'
intvolume: ' 127'
issue: '15'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://doi.org/10.48550/arXiv.2012.11586
month: '10'
oa: 1
oa_version: Preprint
publication: Physical Review Letters
publication_identifier:
issn:
- 0031-9007
- 1079-7114
publication_status: published
publisher: American Physical Society
quality_controlled: '1'
scopus_import: '1'
status: public
title: Analyzing nonequilibrium quantum states through snapshots with artificial neural
networks
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 127
year: '2021'
...
---
_id: '18193'
abstract:
- lang: eng
text: "Topological states of matter, such as fractional quantum Hall states, are
an active field of research due to their exotic excitations. In particular, ultracold
atoms in optical lattices provide a highly controllable and adaptable platform
to study such new types of quantum matter. However, finding a clear route to realize
non-Abelian quantum Hall states in these systems remains challenging. Here we
use the density-matrix renormalization-group (DMRG) method to study the Hofstadter-Bose-Hubbard
model at filling factor \U0001D708=1 and find strong indications that at \U0001D6FC=1/6
magnetic flux quanta per plaquette the ground state is a lattice analog of the
continuum non-Abelian Pfaffian. We study the on-site correlations of the ground
state, which indicate its paired nature at \U0001D708=1, and find an incompressible
state characterized by a charge gap in the bulk. We argue that the emergence of
a charge density wave on thin cylinders and the behavior of the two- and three-particle
correlation functions at short distances provide evidence for the state being
closely related to the continuum Pfaffian. The signatures discussed in this letter
are accessible in current cold atom experiments and we show that the Pfaffian-like
state is readily realizable in few-body systems using adiabatic preparation schemes."
article_number: L161101
article_processing_charge: No
article_type: letter_note
arxiv: 1
author:
- first_name: F. A.
full_name: Palm, F. A.
last_name: Palm
- first_name: M.
full_name: Buser, M.
last_name: Buser
- first_name: Julian
full_name: Leonard, Julian
id: b75b3f45-7995-11ef-9bfd-9a9cd02c3577
last_name: Leonard
- first_name: M.
full_name: Aidelsburger, M.
last_name: Aidelsburger
- first_name: U.
full_name: Schollwöck, U.
last_name: Schollwöck
- first_name: F.
full_name: Grusdt, F.
last_name: Grusdt
citation:
ama: Palm FA, Buser M, Leonard J, Aidelsburger M, Schollwöck U, Grusdt F. Bosonic
Pfaffian state in the Hofstadter-Bose-Hubbard model. Physical Review B.
2021;103(16). doi:10.1103/physrevb.103.l161101
apa: Palm, F. A., Buser, M., Leonard, J., Aidelsburger, M., Schollwöck, U., &
Grusdt, F. (2021). Bosonic Pfaffian state in the Hofstadter-Bose-Hubbard model.
Physical Review B. American Physical Society. https://doi.org/10.1103/physrevb.103.l161101
chicago: Palm, F. A., M. Buser, Julian Leonard, M. Aidelsburger, U. Schollwöck,
and F. Grusdt. “Bosonic Pfaffian State in the Hofstadter-Bose-Hubbard Model.”
Physical Review B. American Physical Society, 2021. https://doi.org/10.1103/physrevb.103.l161101.
ieee: F. A. Palm, M. Buser, J. Leonard, M. Aidelsburger, U. Schollwöck, and F. Grusdt,
“Bosonic Pfaffian state in the Hofstadter-Bose-Hubbard model,” Physical Review
B, vol. 103, no. 16. American Physical Society, 2021.
ista: Palm FA, Buser M, Leonard J, Aidelsburger M, Schollwöck U, Grusdt F. 2021.
Bosonic Pfaffian state in the Hofstadter-Bose-Hubbard model. Physical Review B.
103(16), L161101.
mla: Palm, F. A., et al. “Bosonic Pfaffian State in the Hofstadter-Bose-Hubbard
Model.” Physical Review B, vol. 103, no. 16, L161101, American Physical
Society, 2021, doi:10.1103/physrevb.103.l161101.
short: F.A. Palm, M. Buser, J. Leonard, M. Aidelsburger, U. Schollwöck, F. Grusdt,
Physical Review B 103 (2021).
date_created: 2024-10-07T11:47:51Z
date_published: 2021-04-15T00:00:00Z
date_updated: 2024-10-08T09:55:46Z
day: '15'
doi: 10.1103/physrevb.103.l161101
extern: '1'
external_id:
arxiv:
- '2011.02477'
intvolume: ' 103'
issue: '16'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://doi.org/10.48550/arXiv.2011.02477
month: '04'
oa: 1
oa_version: Preprint
publication: Physical Review B
publication_identifier:
eissn:
- 2469-9969
issn:
- 2469-9950
publication_status: published
publisher: American Physical Society
quality_controlled: '1'
scopus_import: '1'
status: public
title: Bosonic Pfaffian state in the Hofstadter-Bose-Hubbard model
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 103
year: '2021'
...
---
OA_place: repository
OA_type: green
_id: '18233'
abstract:
- lang: eng
text: Neural network quantization enables the deployment of large models on resource-constrained
devices. Current post-training quantization methods fall short in terms of accuracy
for INT4 (or lower) but provide reasonable accuracy for INT8 (or above). In this
work, we study the effect of quantization on the structure of the loss landscape.
We show that the structure is flat and separable for mild quantization, enabling
straightforward post-training quantization methods to achieve good results. We
show that with more aggressive quantization, the loss landscape becomes highly
non-separable with steep curvature, making the selection of quantization parameters
more challenging. Armed with this understanding, we design a method that quantizes
the layer parameters jointly, enabling significant accuracy improvement over current
post-training quantization methods. Reference implementation is available at https://github.com/ynahshan/nn-quantization-pytorch/tree/master/lapq.
article_processing_charge: No
article_type: original
arxiv: 1
author:
- first_name: Yury
full_name: Nahshan, Yury
last_name: Nahshan
- first_name: Brian
full_name: Chmiel, Brian
last_name: Chmiel
- first_name: Chaim
full_name: Baskin, Chaim
last_name: Baskin
- first_name: Evgenii
full_name: Zheltonozhskii, Evgenii
last_name: Zheltonozhskii
- first_name: Ron
full_name: Banner, Ron
last_name: Banner
- first_name: Alexander
full_name: Bronstein, Alexander
id: 58f3726e-7cba-11ef-ad8b-e6e8cb3904e6
last_name: Bronstein
orcid: 0000-0001-9699-8730
- first_name: Avi
full_name: Mendelson, Avi
last_name: Mendelson
citation:
ama: Nahshan Y, Chmiel B, Baskin C, et al. Loss aware post-training quantization.
Machine Learning. 2021;110(11-12):3245-3262. doi:10.1007/s10994-021-06053-z
apa: Nahshan, Y., Chmiel, B., Baskin, C., Zheltonozhskii, E., Banner, R., Bronstein,
A. M., & Mendelson, A. (2021). Loss aware post-training quantization. Machine
Learning. Springer Nature. https://doi.org/10.1007/s10994-021-06053-z
chicago: Nahshan, Yury, Brian Chmiel, Chaim Baskin, Evgenii Zheltonozhskii, Ron
Banner, Alex M. Bronstein, and Avi Mendelson. “Loss Aware Post-Training Quantization.”
Machine Learning. Springer Nature, 2021. https://doi.org/10.1007/s10994-021-06053-z.
ieee: Y. Nahshan et al., “Loss aware post-training quantization,” Machine
Learning, vol. 110, no. 11–12. Springer Nature, pp. 3245–3262, 2021.
ista: Nahshan Y, Chmiel B, Baskin C, Zheltonozhskii E, Banner R, Bronstein AM, Mendelson
A. 2021. Loss aware post-training quantization. Machine Learning. 110(11–12),
3245–3262.
mla: Nahshan, Yury, et al. “Loss Aware Post-Training Quantization.” Machine Learning,
vol. 110, no. 11–12, Springer Nature, 2021, pp. 3245–62, doi:10.1007/s10994-021-06053-z.
short: Y. Nahshan, B. Chmiel, C. Baskin, E. Zheltonozhskii, R. Banner, A.M. Bronstein,
A. Mendelson, Machine Learning 110 (2021) 3245–3262.
date_created: 2024-10-08T12:57:05Z
date_published: 2021-12-01T00:00:00Z
date_updated: 2024-10-15T07:33:28Z
day: '01'
doi: 10.1007/s10994-021-06053-z
extern: '1'
external_id:
arxiv:
- '1911.07190'
intvolume: ' 110'
issue: 11-12
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://doi.org/10.48550/arXiv.1911.07190
month: '12'
oa: 1
oa_version: Preprint
page: 3245-3262
publication: Machine Learning
publication_identifier:
eissn:
- 1573-0565
issn:
- 0885-6125
publication_status: published
publisher: Springer Nature
quality_controlled: '1'
related_material:
link:
- relation: software
url: https://github.com/ynahshan/nn-quantization-pytorch/tree/master/lapq
scopus_import: '1'
status: public
title: Loss aware post-training quantization
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 110
year: '2021'
...
---
OA_place: repository
OA_type: green
_id: '18235'
abstract:
- lang: eng
text: 'Recently, great progress has been made in the field of Few-Shot Learning
(FSL). While many different methods have been proposed, one of the key factors
leading to higher FSL performance is surprisingly simple. It is the backbone network
architecture used to embed the images of the few-shot tasks. While first works
on FSL resorted to small architectures with just a few convolution layers, recent
works show that large architectures pre-trained on the training portion of FSL
datasets produce strong features that are more easily transferable to novel few-shot
tasks, thus attaining significant gains to methods using them. Despite these observations,
little to no work has been done towards finding the right backbone for FSL. In
this paper we propose MetAdapt that not only meta-searches for an optimized architecture
for FSL using Network Architecture Search (NAS), but also results in a model that
can adaptively ‘re-wire’ itself predicting the better architecture for a given
novel few-shot task. Using the proposed approach we observe strong results on
two popular few-shot benchmarks: miniImageNet and FC100.'
article_processing_charge: No
article_type: original
arxiv: 1
author:
- first_name: Sivan
full_name: Doveh, Sivan
last_name: Doveh
- first_name: Eli
full_name: Schwartz, Eli
last_name: Schwartz
- first_name: Chao
full_name: Xue, Chao
last_name: Xue
- first_name: Rogerio
full_name: Feris, Rogerio
last_name: Feris
- first_name: Alexander
full_name: Bronstein, Alexander
id: 58f3726e-7cba-11ef-ad8b-e6e8cb3904e6
last_name: Bronstein
orcid: 0000-0001-9699-8730
- first_name: Raja
full_name: Giryes, Raja
last_name: Giryes
- first_name: Leonid
full_name: Karlinsky, Leonid
last_name: Karlinsky
citation:
ama: 'Doveh S, Schwartz E, Xue C, et al. MetAdapt: Meta-learned task-adaptive architecture
for few-shot classification. Pattern Recognition Letters. 2021;149:130-136.
doi:10.1016/j.patrec.2021.05.010'
apa: 'Doveh, S., Schwartz, E., Xue, C., Feris, R., Bronstein, A. M., Giryes, R.,
& Karlinsky, L. (2021). MetAdapt: Meta-learned task-adaptive architecture
for few-shot classification. Pattern Recognition Letters. Elsevier. https://doi.org/10.1016/j.patrec.2021.05.010'
chicago: 'Doveh, Sivan, Eli Schwartz, Chao Xue, Rogerio Feris, Alex M. Bronstein,
Raja Giryes, and Leonid Karlinsky. “MetAdapt: Meta-Learned Task-Adaptive Architecture
for Few-Shot Classification.” Pattern Recognition Letters. Elsevier, 2021.
https://doi.org/10.1016/j.patrec.2021.05.010.'
ieee: 'S. Doveh et al., “MetAdapt: Meta-learned task-adaptive architecture
for few-shot classification,” Pattern Recognition Letters, vol. 149. Elsevier,
pp. 130–136, 2021.'
ista: 'Doveh S, Schwartz E, Xue C, Feris R, Bronstein AM, Giryes R, Karlinsky L.
2021. MetAdapt: Meta-learned task-adaptive architecture for few-shot classification.
Pattern Recognition Letters. 149, 130–136.'
mla: 'Doveh, Sivan, et al. “MetAdapt: Meta-Learned Task-Adaptive Architecture for
Few-Shot Classification.” Pattern Recognition Letters, vol. 149, Elsevier,
2021, pp. 130–36, doi:10.1016/j.patrec.2021.05.010.'
short: S. Doveh, E. Schwartz, C. Xue, R. Feris, A.M. Bronstein, R. Giryes, L. Karlinsky,
Pattern Recognition Letters 149 (2021) 130–136.
date_created: 2024-10-08T12:57:53Z
date_published: 2021-09-01T00:00:00Z
date_updated: 2024-10-15T07:39:56Z
day: '01'
doi: 10.1016/j.patrec.2021.05.010
extern: '1'
external_id:
arxiv:
- '1912.00412'
intvolume: ' 149'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://doi.org/10.48550/arXiv.1912.00412
month: '09'
oa: 1
oa_version: Preprint
page: 130-136
publication: Pattern Recognition Letters
publication_identifier:
issn:
- 0167-8655
publication_status: published
publisher: Elsevier
quality_controlled: '1'
scopus_import: '1'
status: public
title: 'MetAdapt: Meta-learned task-adaptive architecture for few-shot classification'
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 149
year: '2021'
...
---
OA_place: repository
OA_type: green
_id: '18237'
abstract:
- lang: eng
text: We present a novel method for neural network quantization. Our method, named
UNIQ, emulates a non-uniform k-quantile quantizer and adapts the model to perform
well with quantized weights by injecting noise to the weights at training time.
As a by-product of injecting noise to weights, we find that activations can also
be quantized to as low as 8-bit with only a minor accuracy degradation. Our non-uniform
quantization approach provides a novel alternative to the existing uniform quantization
techniques for neural networks. We further propose a novel complexity metric of
number of bit operations performed (BOPs), and we show that this metric has a
linear relation with logic utilization and power. We suggest evaluating the trade-off
of accuracy vs. complexity (BOPs). The proposed method, when evaluated on ResNet18/34/50
and MobileNet on ImageNet, outperforms the prior state of the art both in the
low-complexity regime and the high accuracy regime. We demonstrate the practical
applicability of this approach, by implementing our non-uniformly quantized CNN
on FPGA.
article_processing_charge: No
article_type: original
arxiv: 1
author:
- first_name: Chaim
full_name: Baskin, Chaim
last_name: Baskin
- first_name: Natan
full_name: Liss, Natan
last_name: Liss
- first_name: Eli
full_name: Schwartz, Eli
last_name: Schwartz
- first_name: Evgenii
full_name: Zheltonozhskii, Evgenii
last_name: Zheltonozhskii
- first_name: Raja
full_name: Giryes, Raja
last_name: Giryes
- first_name: Alexander
full_name: Bronstein, Alexander
id: 58f3726e-7cba-11ef-ad8b-e6e8cb3904e6
last_name: Bronstein
orcid: 0000-0001-9699-8730
- first_name: Avi
full_name: Mendelson, Avi
last_name: Mendelson
citation:
ama: 'Baskin C, Liss N, Schwartz E, et al. UNIQ: Uniform Noise Injection for Non-Uniform
Quantization of neural networks. ACM Transactions on Computer Systems.
2021;37(1-4):1-15. doi:10.1145/3444943'
apa: 'Baskin, C., Liss, N., Schwartz, E., Zheltonozhskii, E., Giryes, R., Bronstein,
A. M., & Mendelson, A. (2021). UNIQ: Uniform Noise Injection for Non-Uniform
Quantization of neural networks. ACM Transactions on Computer Systems.
Association for Computing Machinery. https://doi.org/10.1145/3444943'
chicago: 'Baskin, Chaim, Natan Liss, Eli Schwartz, Evgenii Zheltonozhskii, Raja
Giryes, Alex M. Bronstein, and Avi Mendelson. “UNIQ: Uniform Noise Injection for
Non-Uniform Quantization of Neural Networks.” ACM Transactions on Computer
Systems. Association for Computing Machinery, 2021. https://doi.org/10.1145/3444943.'
ieee: 'C. Baskin et al., “UNIQ: Uniform Noise Injection for Non-Uniform Quantization
of neural networks,” ACM Transactions on Computer Systems, vol. 37, no.
1–4. Association for Computing Machinery, pp. 1–15, 2021.'
ista: 'Baskin C, Liss N, Schwartz E, Zheltonozhskii E, Giryes R, Bronstein AM, Mendelson
A. 2021. UNIQ: Uniform Noise Injection for Non-Uniform Quantization of neural
networks. ACM Transactions on Computer Systems. 37(1–4), 1–15.'
mla: 'Baskin, Chaim, et al. “UNIQ: Uniform Noise Injection for Non-Uniform Quantization
of Neural Networks.” ACM Transactions on Computer Systems, vol. 37, no.
1–4, Association for Computing Machinery, 2021, pp. 1–15, doi:10.1145/3444943.'
short: C. Baskin, N. Liss, E. Schwartz, E. Zheltonozhskii, R. Giryes, A.M. Bronstein,
A. Mendelson, ACM Transactions on Computer Systems 37 (2021) 1–15.
date_created: 2024-10-08T12:58:26Z
date_published: 2021-03-26T00:00:00Z
date_updated: 2024-10-15T07:47:22Z
day: '26'
doi: 10.1145/3444943
extern: '1'
external_id:
arxiv:
- '1804.10969'
intvolume: ' 37'
issue: 1-4
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://doi.org/10.48550/arXiv.1804.10969
month: '03'
oa: 1
oa_version: Preprint
page: 1-15
publication: ACM Transactions on Computer Systems
publication_identifier:
eissn:
- 1557-7333
issn:
- 0734-2071
publication_status: published
publisher: Association for Computing Machinery
quality_controlled: '1'
scopus_import: '1'
status: public
title: 'UNIQ: Uniform Noise Injection for Non-Uniform Quantization of neural networks'
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 37
year: '2021'
...
---
OA_place: publisher
OA_type: gold
_id: '18238'
abstract:
- lang: eng
text: The demand for running NNs in embedded environments has increased significantly
in recent years due to the significant success of convolutional neural network
(CNN) approaches in various tasks, including image recognition and generation.
The task of achieving high accuracy on resource-restricted devices, however, is
still considered to be challenging, which is mainly due to the vast number of
design parameters that need to be balanced. While the quantization of CNN parameters
leads to a reduction of power and area, it can also generate unexpected changes
in the balance between communication and computation. This change is hard to evaluate,
and the lack of balance may lead to lower utilization of either memory bandwidth
or computational resources, thereby reducing performance. This paper introduces
a hardware performance analysis framework for identifying bottlenecks in the early
stages of CNN hardware design. We demonstrate how the proposed method can help
in evaluating different architecture alternatives of resource-restricted CNN accelerators
(e.g., part of real-time embedded systems) early in design stages and, thus, prevent
making design mistakes.
article_number: '717'
article_processing_charge: No
article_type: original
author:
- first_name: Alex
full_name: Karbachevsky, Alex
last_name: Karbachevsky
- first_name: Chaim
full_name: Baskin, Chaim
last_name: Baskin
- first_name: Evgenii
full_name: Zheltonozhskii, Evgenii
last_name: Zheltonozhskii
- first_name: Yevgeny
full_name: Yermolin, Yevgeny
last_name: Yermolin
- first_name: Freddy
full_name: Gabbay, Freddy
last_name: Gabbay
- first_name: Alexander
full_name: Bronstein, Alexander
id: 58f3726e-7cba-11ef-ad8b-e6e8cb3904e6
last_name: Bronstein
orcid: 0000-0001-9699-8730
- first_name: Avi
full_name: Mendelson, Avi
last_name: Mendelson
citation:
ama: Karbachevsky A, Baskin C, Zheltonozhskii E, et al. Early-stage neural network
hardware performance analysis. Sustainability. 2021;13(2). doi:10.3390/su13020717
apa: Karbachevsky, A., Baskin, C., Zheltonozhskii, E., Yermolin, Y., Gabbay, F.,
Bronstein, A. M., & Mendelson, A. (2021). Early-stage neural network hardware
performance analysis. Sustainability. MDPI. https://doi.org/10.3390/su13020717
chicago: Karbachevsky, Alex, Chaim Baskin, Evgenii Zheltonozhskii, Yevgeny Yermolin,
Freddy Gabbay, Alex M. Bronstein, and Avi Mendelson. “Early-Stage Neural Network
Hardware Performance Analysis.” Sustainability. MDPI, 2021. https://doi.org/10.3390/su13020717.
ieee: A. Karbachevsky et al., “Early-stage neural network hardware performance
analysis,” Sustainability, vol. 13, no. 2. MDPI, 2021.
ista: Karbachevsky A, Baskin C, Zheltonozhskii E, Yermolin Y, Gabbay F, Bronstein
AM, Mendelson A. 2021. Early-stage neural network hardware performance analysis.
Sustainability. 13(2), 717.
mla: Karbachevsky, Alex, et al. “Early-Stage Neural Network Hardware Performance
Analysis.” Sustainability, vol. 13, no. 2, 717, MDPI, 2021, doi:10.3390/su13020717.
short: A. Karbachevsky, C. Baskin, E. Zheltonozhskii, Y. Yermolin, F. Gabbay, A.M.
Bronstein, A. Mendelson, Sustainability 13 (2021).
date_created: 2024-10-08T12:58:47Z
date_published: 2021-01-13T00:00:00Z
date_updated: 2024-10-15T08:17:49Z
day: '13'
doi: 10.3390/su13020717
extern: '1'
intvolume: ' 13'
issue: '2'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://doi.org/10.3390/su13020717
month: '01'
oa: 1
oa_version: Published Version
publication: Sustainability
publication_identifier:
issn:
- 2071-1050
publication_status: published
publisher: MDPI
quality_controlled: '1'
scopus_import: '1'
status: public
title: Early-stage neural network hardware performance analysis
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 13
year: '2021'
...
---
OA_place: repository
OA_type: green
_id: '18239'
abstract:
- lang: eng
text: Nowadays, there is an abundance of data involving images and surrounding free-form
text weakly corresponding to those images. Weakly Supervised phrase-Grounding
(WSG) deals with the task of using this data to learn to localize (or to ground)
arbitrary text phrases in images without any additional annotations. However,
most recent SotA methods for WSG assume an existence of a pre-trained object detector,
relying on it to produce the ROIs for localization. In this work, we focus on
the task of Detector-Free WSG (DF-WSG) to solve WSG without relying on a pre-trained
detector. The key idea behind our proposed Grounding by Separation (GbS) method
is synthesizing ‘text to image-regions’ associations by random alpha-blending
of arbitrary image pairs and using the corresponding texts of the pair as conditions
to recover the alpha map from the blended image via a segmentation network. At
test time, this allows using the query phrase as a condition for a non-blended
query image, thus interpreting the test image as a composition of a region corresponding
to the phrase and the complement region. Our GbS shows an 8.5% accuracy improvement
over previous DF-WSG SotA, for a range of benchmarks including Flickr30K, Visual
Genome, and ReferIt, as well as a complementary improvement (above 7%) over the
detector-based approaches for WSG.
article_processing_charge: No
arxiv: 1
author:
- first_name: Assaf
full_name: Arbelle, Assaf
last_name: Arbelle
- first_name: Sivan
full_name: Doveh, Sivan
last_name: Doveh
- first_name: Amit
full_name: Alfassy, Amit
last_name: Alfassy
- first_name: Joseph
full_name: Shtok, Joseph
last_name: Shtok
- first_name: Guy
full_name: Lev, Guy
last_name: Lev
- first_name: Eli
full_name: Schwartz, Eli
last_name: Schwartz
- first_name: Hilde
full_name: Kuehne, Hilde
last_name: Kuehne
- first_name: Hila Barak
full_name: Levi, Hila Barak
last_name: Levi
- first_name: Prasanna
full_name: Sattigeri, Prasanna
last_name: Sattigeri
- first_name: Rameswar
full_name: Panda, Rameswar
last_name: Panda
- first_name: Chun-Fu
full_name: Chen, Chun-Fu
last_name: Chen
- first_name: Alexander
full_name: Bronstein, Alexander
id: 58f3726e-7cba-11ef-ad8b-e6e8cb3904e6
last_name: Bronstein
orcid: 0000-0001-9699-8730
- first_name: Kate
full_name: Saenko, Kate
last_name: Saenko
- first_name: Shimon
full_name: Ullman, Shimon
last_name: Ullman
- first_name: Raja
full_name: Giryes, Raja
last_name: Giryes
- first_name: Rogerio
full_name: Feris, Rogerio
last_name: Feris
- first_name: Leonid
full_name: Karlinsky, Leonid
last_name: Karlinsky
citation:
ama: 'Arbelle A, Doveh S, Alfassy A, et al. Detector-free weakly supervised grounding
by separation. In: IEEE/CVF International Conference on Computer Vision.
Vol 15. Institute of Electrical and Electronics Engineers; 2021. doi:10.1109/iccv48922.2021.00182'
apa: 'Arbelle, A., Doveh, S., Alfassy, A., Shtok, J., Lev, G., Schwartz, E., … Karlinsky,
L. (2021). Detector-free weakly supervised grounding by separation. In IEEE/CVF
International Conference on Computer Vision (Vol. 15). Montreal, Canada: Institute
of Electrical and Electronics Engineers. https://doi.org/10.1109/iccv48922.2021.00182'
chicago: Arbelle, Assaf, Sivan Doveh, Amit Alfassy, Joseph Shtok, Guy Lev, Eli Schwartz,
Hilde Kuehne, et al. “Detector-Free Weakly Supervised Grounding by Separation.”
In IEEE/CVF International Conference on Computer Vision, Vol. 15. Institute
of Electrical and Electronics Engineers, 2021. https://doi.org/10.1109/iccv48922.2021.00182.
ieee: A. Arbelle et al., “Detector-free weakly supervised grounding by separation,”
in IEEE/CVF International Conference on Computer Vision, Montreal, Canada,
2021, vol. 15.
ista: 'Arbelle A, Doveh S, Alfassy A, Shtok J, Lev G, Schwartz E, Kuehne H, Levi
HB, Sattigeri P, Panda R, Chen C-F, Bronstein AM, Saenko K, Ullman S, Giryes R,
Feris R, Karlinsky L. 2021. Detector-free weakly supervised grounding by separation.
IEEE/CVF International Conference on Computer Vision. ICCV: International Conference
on Computer Vision vol. 15.'
mla: Arbelle, Assaf, et al. “Detector-Free Weakly Supervised Grounding by Separation.”
IEEE/CVF International Conference on Computer Vision, vol. 15, Institute
of Electrical and Electronics Engineers, 2021, doi:10.1109/iccv48922.2021.00182.
short: A. Arbelle, S. Doveh, A. Alfassy, J. Shtok, G. Lev, E. Schwartz, H. Kuehne,
H.B. Levi, P. Sattigeri, R. Panda, C.-F. Chen, A.M. Bronstein, K. Saenko, S. Ullman,
R. Giryes, R. Feris, L. Karlinsky, in:, IEEE/CVF International Conference on Computer
Vision, Institute of Electrical and Electronics Engineers, 2021.
conference:
end_date: 2021-10-17
location: Montreal, Canada
name: 'ICCV: International Conference on Computer Vision'
start_date: 2021-10-10
date_created: 2024-10-08T13:02:34Z
date_published: 2021-10-20T00:00:00Z
date_updated: 2024-10-15T08:22:47Z
day: '20'
doi: 10.1109/iccv48922.2021.00182
extern: '1'
external_id:
arxiv:
- '2104.09829'
intvolume: ' 15'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://doi.org/10.48550/arXiv.2104.09829
month: '10'
oa: 1
oa_version: Preprint
publication: IEEE/CVF International Conference on Computer Vision
publication_identifier:
eisbn:
- '9781665428125'
publication_status: published
publisher: Institute of Electrical and Electronics Engineers
quality_controlled: '1'
scopus_import: '1'
status: public
title: Detector-free weakly supervised grounding by separation
type: conference
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 15
year: '2021'
...