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Relieving scale disparity in binary black hole simulations

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arxiv 2410.22290 v2 pith:WMKZ4D6V submitted 2024-10-29 gr-qc

Nikolas A. Wittek , Leor Barack , Harald P. Pfeiffer , Adam Pound , Nils Deppe , Lawrence E. Kidder , Alexandra Macedo , Kyle C. Nelli
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William Throwe Nils L. Vu
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keywords blacksimulationsbinaryholelargemodelanalyticalaround
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Worldtube excision is a method of reducing computational burden in Numerical Relativity simulations of binary black holes in situations where there is a good analytical model of the geometry around (one or both of) the objects. Two such scenarios of relevance in gravitational-wave astronomy are (1) the case of mass-disparate systems, and (2) the early inspiral when the separation is still large. Here we illustrate the utility and flexibility of this technique with simulations of the fully self-consistent radiative evolution in the model problem of a scalar charge orbiting a Schwarzschild black hole under the effect of scalar-field radiation reaction. We explore a range of orbital configurations, including inspirals with large eccentricity (which we follow through to the final plunge and ringdown) and hyperbolic scattering.

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Cited by 3 Pith papers

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