TY  - JOUR
PB  - SciPost Foundation
DO  - 10.21468/SciPostPhys.17.2.056
TI  - Self-force framework for transition-to-plunge waveforms
PY  - 2024/08/16
UR  - https://scipost.org/SciPostPhys.17.2.056
JF  - SciPost Physics
JA  - SciPost Phys.
VL  - 17
IS  - 2
SP  - 056
A1  - Küchler, Lorenzo
AU  - Compère, Geoffrey
AU  - Durkan, Leanne
AU  - Pound, Adam
AB  - Compact binaries with asymmetric mass ratios are key expected sources for next-generation gravitational wave detectors. Gravitational self-force theory has been successful in producing post-adiabatic waveforms that describe the quasi-circular inspiral around a non-spinning black hole with sub-radian accuracy, in remarkable agreement with numerical relativity simulations. Current inspiral models, however, break down at the innermost stable circular orbit, missing part of the waveform as the secondary body transitions to a plunge into the black hole. In this work we derive the transition-to-plunge expansion within a multiscale framework and asymptotically match its early-time behaviour with the late inspiral. Our multiscale formulation facilitates rapid generation of waveforms: we build second post-leading transition-to-plunge waveforms, named 2PLT waveforms. Although our numerical results are limited to low perturbative orders, our framework contains the analytic tools for building higher-order waveforms consistent with post-adiabatic inspirals, once all the necessary numerical self-force data becomes available. We validate our framework by comparing against numerical relativity simulations, surrogate models and the effective one-body approach.
ER  -

@Article{10.21468/SciPostPhys.17.2.056,
	title={{Self-force framework for transition-to-plunge waveforms}},
	author={Lorenzo Küchler and Geoffrey Compère and Leanne Durkan and Adam Pound},
	journal={SciPost Phys.},
	volume={17},
	pages={056},
	year={2024},
	publisher={SciPost},
	doi={10.21468/SciPostPhys.17.2.056},
	url={https://scipost.org/10.21468/SciPostPhys.17.2.056},
}