Transition-to-plunge self-force waveforms with a spinning primary

Fuente: arXiv
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Autori principali: Honet, Loïc, Küchler, Lorenzo, Pound, Adam, Compère, Geoffrey
Natura: Preprint
Pubblicazione: 2025
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author Honet, Loïc
Küchler, Lorenzo
Pound, Adam
Compère, Geoffrey
author_facet Honet, Loïc
Küchler, Lorenzo
Pound, Adam
Compère, Geoffrey
contents With the upcoming third-generation gravitational-wave detectors comes the need to build complete, faithful, and fast waveform models for asymmetric-mass-ratio compact binaries. Most efforts within the self-force community have focused on modeling these binaries' inspiral regime, but for ground-based detectors the systems' final merger can represent the dominant part of the signal. Recent work by three of us has extended the multiscale self-force framework through the transition-to-plunge and merger-ringdown regimes for nonspinning binaries. In this paper, we generalize the next-to-next-to-leading-order transition-to-plunge waveform model to include the spin of the primary black hole. We also improve the construction of composite inspiral-transition waveform models by performing a change of variables on the binary's mechanical phase space during the transition to plunge. We provide detailed discussions of our numerical implementation and comparisons with numerical relativity simulations.
format Preprint
id arxiv_https___arxiv_org_abs_2510_13958
institution arXiv
publishDate 2025
record_format arxiv
spellingShingle Transition-to-plunge self-force waveforms with a spinning primary
Honet, Loïc
Küchler, Lorenzo
Pound, Adam
Compère, Geoffrey
General Relativity and Quantum Cosmology
With the upcoming third-generation gravitational-wave detectors comes the need to build complete, faithful, and fast waveform models for asymmetric-mass-ratio compact binaries. Most efforts within the self-force community have focused on modeling these binaries' inspiral regime, but for ground-based detectors the systems' final merger can represent the dominant part of the signal. Recent work by three of us has extended the multiscale self-force framework through the transition-to-plunge and merger-ringdown regimes for nonspinning binaries. In this paper, we generalize the next-to-next-to-leading-order transition-to-plunge waveform model to include the spin of the primary black hole. We also improve the construction of composite inspiral-transition waveform models by performing a change of variables on the binary's mechanical phase space during the transition to plunge. We provide detailed discussions of our numerical implementation and comparisons with numerical relativity simulations.
title Transition-to-plunge self-force waveforms with a spinning primary
topic General Relativity and Quantum Cosmology
url https://arxiv.org/abs/2510.13958