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Ringdown gravitational waves from close scattering of two black holes

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arxiv 2310.18686 v1 pith:EPWIERA3 submitted 2023-10-28 gr-qc astro-ph.HEhep-th

Ringdown gravitational waves from close scattering of two black holes

Yeong-Bok Bae , Young-Hwan Hyun , Gungwon Kang This is my paper
classification gr-qc astro-ph.HEhep-th
keywords gravitationalcloseringdownblackholesscatteringwaveagree
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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We have numerically investigated close scattering processes of two black holes (BHs). Our careful analysis shows for the first time a non-merging ringdown gravitational wave coming from dynamical tidal deformations of individual BHs during their close encounter. The ringdown wave frequencies turn out to agree well with the quasi-normal ones of a single BH in perturbation theory, despite its distinctive physical context from the merging case. Our study shows a new type of gravitational waveform and opens up a new exploration of strong gravitational interactions using BH encounters.

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Cited by 3 Pith papers

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