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Radiation-reaction force and multipolar waveforms for eccentric, spin-aligned binaries in the effective-one-body formalism

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Khalil,  Mohammed
Astrophysical and Cosmological Relativity, AEI-Golm, MPI for Gravitational Physics, Max Planck Society;

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Buonanno,  Alessandra
Astrophysical and Cosmological Relativity, AEI-Golm, MPI for Gravitational Physics, Max Planck Society;

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Steinhoff,  Jan
Astrophysical and Cosmological Relativity, AEI-Golm, MPI for Gravitational Physics, Max Planck Society;

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Vines,  Justin
Astrophysical and Cosmological Relativity, AEI-Golm, MPI for Gravitational Physics, Max Planck Society;

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2104.11705.pdf
(Preprint), 526KB

PhysRevD.104.024046.pdf
(Publisher version), 501KB

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Citation

Khalil, M., Buonanno, A., Steinhoff, J., & Vines, J. (2021). Radiation-reaction force and multipolar waveforms for eccentric, spin-aligned binaries in the effective-one-body formalism. Physical Review D, 104(2): 024046. doi:10.1103/PhysRevD.104.024046.


Cite as: https://hdl.handle.net/21.11116/0000-0008-6B23-9
Abstract
While most binary inspirals are expected to have circularized before they
enter the LIGO/Virgo frequency band, a small fraction of those binaries could
have non-negligible orbital eccentricity depending on their formation channel.
Hence, it is important to accurately model eccentricity effects in waveform
models used to detect those binaries, infer their properties, and shed light on
their astrophysical environment. We develop a multipolar effective-one-body
(EOB) eccentric waveform model for compact binaries whose components have spins
aligned or anti-aligned with the orbital angular momentum. The waveform model
contains eccentricity effects in the radiation-reaction force and gravitational
modes through second post-Newtonian (PN) order, including tail effects, and
spin-orbit and spin-spin couplings. We recast the PN-expanded, eccentric
radiation-reaction force and modes in factorized form so that the newly derived
terms can be directly included in the state-of-the-art, quasi-circular--orbit
EOB model currently used in LIGO/Virgo analyses (i.e., the {\tt SEOBNRv4HM}
model).