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Comparing second-order gravitational self-force and effective one body waveforms from inspiralling, quasicircular and nonspinning black hole binaries: II. The large-mass-ratio case

Comparing second-order gravitational self-force and effective one body waveforms from inspiralling, quasicircular and nonspinning black hole binaries: II. The large-mass-ratio case
Comparing second-order gravitational self-force and effective one body waveforms from inspiralling, quasicircular and nonspinning black hole binaries: II. The large-mass-ratio case

We compare recently computed waveforms from second-order gravitational self-force (GSF) theory to those generated by a new, GSF-informed, effective one body (EOB) waveform model for (spin-aligned, eccentric) inspiralling black hole binaries with large mass ratios. We focus on quasicircular, nonspinning, configurations and perform detailed GSF/EOB waveform phasing comparisons, either in the time domain or via the gauge-invariant dimensionless function Qωω2/ω˙, where ω is the gravitational wave frequency. The inclusion of high-PN test-mass terms within the EOB radiation reaction (notably, up to 22PN) is crucial to achieve an EOB/GSF phasing agreement below 1 rad up to the end of the inspiral for mass ratios up to 500. For larger mass ratios, up to 5×104, the contribution of horizon absorption becomes more and more important and needs to be accurately modeled. Our results indicate that our GSF-informed EOB waveform model is a promising tool to describe waveforms generated by either intermediate or extreme mass ratio inspirals for future gravitational wave detectors.

2470-0010
Albertini, Angelica
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Nagar, Alessandro
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Pound, Adam
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Warburton, Niels
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Wardell, Barry
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Durkan, Leanne
eb4cc1b6-b8d0-4c24-a5e2-0d238c3520d1
Miller, Jeremy
de9743e4-4878-43f2-a6db-d7f1f8af90be
Albertini, Angelica
5e2d9848-0480-4adb-85d5-1554ba97e982
Nagar, Alessandro
f99a9961-a55c-4aad-967e-ea0e9d1691bd
Pound, Adam
5aac971a-0e07-4383-aff0-a21d43103a70
Warburton, Niels
cb2c5123-1526-4d50-85cd-856125f8822f
Wardell, Barry
6414313d-3f8c-4c08-9e54-1754c47595af
Durkan, Leanne
eb4cc1b6-b8d0-4c24-a5e2-0d238c3520d1
Miller, Jeremy
de9743e4-4878-43f2-a6db-d7f1f8af90be

Albertini, Angelica, Nagar, Alessandro, Pound, Adam, Warburton, Niels, Wardell, Barry, Durkan, Leanne and Miller, Jeremy (2022) Comparing second-order gravitational self-force and effective one body waveforms from inspiralling, quasicircular and nonspinning black hole binaries: II. The large-mass-ratio case. Physical Review D, 106 (8), [084062]. (doi:10.1103/PhysRevD.106.084062).

Record type: Article

Abstract

We compare recently computed waveforms from second-order gravitational self-force (GSF) theory to those generated by a new, GSF-informed, effective one body (EOB) waveform model for (spin-aligned, eccentric) inspiralling black hole binaries with large mass ratios. We focus on quasicircular, nonspinning, configurations and perform detailed GSF/EOB waveform phasing comparisons, either in the time domain or via the gauge-invariant dimensionless function Qωω2/ω˙, where ω is the gravitational wave frequency. The inclusion of high-PN test-mass terms within the EOB radiation reaction (notably, up to 22PN) is crucial to achieve an EOB/GSF phasing agreement below 1 rad up to the end of the inspiral for mass ratios up to 500. For larger mass ratios, up to 5×104, the contribution of horizon absorption becomes more and more important and needs to be accurately modeled. Our results indicate that our GSF-informed EOB waveform model is a promising tool to describe waveforms generated by either intermediate or extreme mass ratio inspirals for future gravitational wave detectors.

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Accepted/In Press date: 28 September 2022
Published date: 31 October 2022
Additional Information: Funding Information: A. A. has been supported by the fellowship Lumina Quaeruntur No. LQ100032102 of the Czech Academy of Sciences. We are grateful to S. Albanesi for discussion and technical help during the development of this work. A. P. gratefully acknowledges the support of a Royal Society University Research Fellowship. N. W. acknowledges support from a Royal Society—Science Foundation Ireland University Research Fellowship via Grants No. UF160093 and No. RGF\R1\180022. This work makes use of the Black Hole Perturbation Toolkit and Simulation Tools . Publisher Copyright: © 2022 American Physical Society.

Identifiers

Local EPrints ID: 472280
URI: http://eprints.soton.ac.uk/id/eprint/472280
ISSN: 2470-0010
PURE UUID: 96d85d85-efde-4590-afc2-ae72fdbda8c4
ORCID for Adam Pound: ORCID iD orcid.org/0000-0001-9446-0638

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Date deposited: 30 Nov 2022 17:45
Last modified: 01 Dec 2022 02:43

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Contributors

Author: Angelica Albertini
Author: Alessandro Nagar
Author: Adam Pound ORCID iD
Author: Niels Warburton
Author: Barry Wardell
Author: Leanne Durkan
Author: Jeremy Miller

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