Gravitational waves from quasielliptic compact binaries in scalar-tensor theory to one-and-a-half post-Newtonian order

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F25%3A00638038" target="_blank" >RIV/68378271:_____/25:00638038 - isvavai.cz</a>

Výsledek na webu

<a href="https://hdl.handle.net/11104/0375692" target="_blank" >https://hdl.handle.net/11104/0375692</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1088/1361-6382/adedf5" target="_blank" >10.1088/1361-6382/adedf5</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Gravitational waves from quasielliptic compact binaries in scalar-tensor theory to one-and-a-half post-Newtonian order

Popis výsledku v původním jazyce

The orbit-averaged fluxes of energy and angular momentum generated by a compact binary system of nonspinning particles are obtained in a popular class of massless scalar-tensor theories with first-and-a-half post-Newtonian (1.5PN) accuracy, i.e. 2.5PN accuracy beyond the leading1PN dipolar radiation. The secular evolution of the orbital elements (frequency and eccentricity) are then also obtained with 1.5PN accuracy. Three technical advances were necessary to obtain these results: (i) the decomposition of the scalar dipole moment as a Fourier series at 1PN order, along with the other moments at Newtonian order, (ii) the derivation of the formula for the passage to the center-of-mass frame at 2.5PN, including a novel hereditary term arising from the contribution of the radiation, and (iii) the complete treatment of the memory-like term appearing in the angular momentum flux. Moreover, as a byproduct of this work, I revisit in the appendix the treatment in general relativity of the memory integral appearing at 2.5PN order in the angular momentum flux (Arun et al 2009 Phys. Rev. D<bold>80</bold> 124018), and find that the spurious divergence in the initial eccentricity e(1) found there is cured by a careful split between AC and DC terms.

Název v anglickém jazyce

Gravitational waves from quasielliptic compact binaries in scalar-tensor theory to one-and-a-half post-Newtonian order

Popis výsledku anglicky

The orbit-averaged fluxes of energy and angular momentum generated by a compact binary system of nonspinning particles are obtained in a popular class of massless scalar-tensor theories with first-and-a-half post-Newtonian (1.5PN) accuracy, i.e. 2.5PN accuracy beyond the leading1PN dipolar radiation. The secular evolution of the orbital elements (frequency and eccentricity) are then also obtained with 1.5PN accuracy. Three technical advances were necessary to obtain these results: (i) the decomposition of the scalar dipole moment as a Fourier series at 1PN order, along with the other moments at Newtonian order, (ii) the derivation of the formula for the passage to the center-of-mass frame at 2.5PN, including a novel hereditary term arising from the contribution of the radiation, and (iii) the complete treatment of the memory-like term appearing in the angular momentum flux. Moreover, as a byproduct of this work, I revisit in the appendix the treatment in general relativity of the memory integral appearing at 2.5PN order in the angular momentum flux (Arun et al 2009 Phys. Rev. D<bold>80</bold> 124018), and find that the spurious divergence in the initial eccentricity e(1) found there is cured by a careful split between AC and DC terms.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10303 - Particles and field physics

Projekt

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2025

Kód důvěrnosti údajů

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

Název periodika

Classical and Quantum Gravity

ISSN

0264-9381

e-ISSN

1361-6382

Svazek periodika

42

Číslo periodika v rámci svazku

15

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

82

Strana od-do

155016

Kód UT WoS článku

001541147700001

EID výsledku v databázi Scopus

2-s2.0-105012038648