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Strong-field scattering of two black holes: Numerical Relativity meets Post-Minkowskian gravity

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arxiv 2211.01399 v2 pith:YN64UXUC submitted 2022-11-02 gr-qc hep-th

Thibault Damour , Piero Rettegno This is my paper
classification gr-qchep-th
keywords scatteringblackdataholesbinaryequal-massinformationnon-spinning
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We compare numerical relativity (NR) data on the scattering of equal-mass, non-spinning binary black holes to various analytical predictions based on post-Minkowskian (PM) results. While the usual sequence of PM-expanded scattering angles shows a rather poor convergence towards NR data, we find that a reformulation of PM information in terms of Effective-One-Body radial potentials leads to remarkable agreement with NR data, especially when using the radiation-reacted 4PM information. Using Firsov's inversion formula we directly extract, for the first time, from NR simulations a (radiation-reacted) gravitational potential describing the scattering of equal-mass, non-spinning binary black holes. We urge the NR community to compute more sequences of scattering simulations, so as to extend this knowledge to a wider region of parameter space.

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Cited by 10 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score.

  1. Binary black hole scattering with generic spins

    gr-qc 2026-06 unverdicted novelty 8.0 of 10

    First NR-PM comparison for generic-spin black hole scattering reveals strong-field precessional turning-point structure with polar-angle sign change absent from perturbative PM.

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