Numerical-relativity validation of effective-one-body waveforms in the intermediate-mass-ratio regime

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985815%3A_____%2F22%3A00560029" target="_blank" >RIV/67985815:_____/22:00560029 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/00216208:11320/22:10447366

Výsledek na webu

<a href="https://doi.org/10.1103/PhysRevD.105.124061" target="_blank" >https://doi.org/10.1103/PhysRevD.105.124061</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1103/PhysRevD.105.124061" target="_blank" >10.1103/PhysRevD.105.124061</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Numerical-relativity validation of effective-one-body waveforms in the intermediate-mass-ratio regime

Popis výsledku v původním jazyce

One of the open problems in developing binary black hole (BBH) waveforms for gravitational wave astronomy is to model the intermediate-mass-ratio regime and connect it to the extreme-mass-ratio regime. A natural approach is to employ the effective-one-body (BOB) approach to the two-body dynamics that, by design, can cover the entire mass ratio range and naturally incorporates the extreme-mass-ratio limit. Here we use recently obtained numerical relativity (NR) data with mass ratios m(1)/m(2) = (7, 15, 32, 64, 128) to test the accuracy of the state-of-the-art EOB model TEOBResumS in the intermediate-mass-ratio regime. We generally find an excellent EOB/NR consistency around merger and ringdown for all mass ratios and for all available subdominant multipoles, except for the l = m = 5 one. This mode can be crucially improved using the new large mass ratio NR data of this paper. The EOB/NR inspirals are also consistent with the estimated NR uncertainties. We also use several NR datasets taken by different public catalogs to probe the universal behavior of the multipolar hierarchy of waveform amplitudes at merger, that smoothly connects the equal-mass BBH to the test-mass result. Interestingly, the universal behavior is strengthened if the nonoscillatory memory contribution is included in the NR waveform. Future NR simulations with improved accuracy will be necessary to further probe, and possibly quantitatively refine, the TEOBResumS transition from late inspiral to plunge in the intermediate-mass-ratio regime.

Název v anglickém jazyce

Numerical-relativity validation of effective-one-body waveforms in the intermediate-mass-ratio regime

Popis výsledku anglicky

One of the open problems in developing binary black hole (BBH) waveforms for gravitational wave astronomy is to model the intermediate-mass-ratio regime and connect it to the extreme-mass-ratio regime. A natural approach is to employ the effective-one-body (BOB) approach to the two-body dynamics that, by design, can cover the entire mass ratio range and naturally incorporates the extreme-mass-ratio limit. Here we use recently obtained numerical relativity (NR) data with mass ratios m(1)/m(2) = (7, 15, 32, 64, 128) to test the accuracy of the state-of-the-art EOB model TEOBResumS in the intermediate-mass-ratio regime. We generally find an excellent EOB/NR consistency around merger and ringdown for all mass ratios and for all available subdominant multipoles, except for the l = m = 5 one. This mode can be crucially improved using the new large mass ratio NR data of this paper. The EOB/NR inspirals are also consistent with the estimated NR uncertainties. We also use several NR datasets taken by different public catalogs to probe the universal behavior of the multipolar hierarchy of waveform amplitudes at merger, that smoothly connects the equal-mass BBH to the test-mass result. Interestingly, the universal behavior is strengthened if the nonoscillatory memory contribution is included in the NR waveform. Future NR simulations with improved accuracy will be necessary to further probe, and possibly quantitatively refine, the TEOBResumS transition from late inspiral to plunge in the intermediate-mass-ratio regime.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10308 - Astronomy (including astrophysics,space science)

Projekt

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2022

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Physical Review D

ISSN

2470-0010

e-ISSN

2470-0029

Svazek periodika

105

Číslo periodika v rámci svazku

12

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

19

Strana od-do

124061

Kód UT WoS článku

000835379100009

EID výsledku v databázi Scopus

2-s2.0-85134263107