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

Result code in 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>
Result on the web
<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>

Result language
angličtina
Original language name
Gravitational waves from quasielliptic compact binaries in scalar-tensor theory to one-and-a-half post-Newtonian order
Original language description
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.
Czech name
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Czech description
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Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10303 - Particles and field physics

Project
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Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year
2025
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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