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Rotating black holes experience dynamical tides

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arxiv 2406.09543 v2 pith:5Z3OPBZX submitted 2024-06-13 gr-qc hep-th

Rajendra Prasad Bhatt , Sumanta Chakraborty , Sukanta Bose This is my paper · ORCID
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keywords tidalblackdynamicalexternalholekerrlovenon-vanishing
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We find the dynamical tidal response of a Kerr black hole (BH) and demonstrate its tidal Love numbers to be non-vanishing when present in a non-axisymmetric external tidal field. To leading order, they depend quadratically on the black hole spin and linearly on the mode frequency. This implies that Kerr BHs are deformable under certain external, time-dependent perturbations. Since non-vanishing tidal Love numbers have been used in compact binary coalescences observed by the LIGO-Virgo-KAGRA (LVK) Collaboration to infer their non-BH nature, our findings have important implications on such inferences from future gravitational wave observations.

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Cited by 3 Pith papers

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

  1. Dynamical Tidal Response of Schwarzschild Black Holes

    gr-qc 2025-11 conditional novelty 7.0 of 10

    The dynamical Love numbers of a Schwarzschild black hole are nonzero at quadratic order in frequency, run logarithmically with a coefficient set by dissipation, and are now matched including their finite, scheme-depen...

  2. Tidal deformation of an accreting compact object

    gr-qc 2026-07 conditional novelty 5.0 of 10

    For perfectly reflecting Schwarzschild-like ECOs, the log-compactness scaling of static scalar and spin-1 Love numbers survives a thin accretion disk, which mainly amplifies the response magnitude.

  3. Echoes of Love Beyond the Horizon: A Bridge to Recovering Information from Black Holes

    gr-qc 2025-05 conditional novelty 5.0 of 10

    Black holes may acquire Planck-suppressed tidal Love numbers from quantum gravity, which the authors argue could carry information about the initial collapse and help resolve the information loss paradox.

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