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Regge pole description of scattering of gravitational waves by a Schwarzschild black hole

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arxiv 1906.01441 v2 pith:A2AXNDYG submitted 2019-06-02 gr-qc hep-th

classification gr-qchep-th
keywords blackholereggescatteringwavesangularcomplexgravitational
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We revisit the problem of plane monochromatic gravitational waves impinging upon a Schwarzschild black hole using complex angular momentum techniques. By extending our previous study concerning scalar and electromagnetic waves [A. Folacci and M. Ould El Hadj, Phys.\, Rev.\, D {\bf 99}, 104079, (2019), arXiv:1901.03965], we provide complex angular momentum representations and Regge pole approximations of the helicity-preserving and helicity-reversing scattering amplitudes and of the total differential scattering cross section. We show, in particular, that for high frequencies (i.e., in the short-wavelength regime), a small number of Regge poles permits us to describe numerically with very good agreement the black hole glory and the orbiting oscillations and we then provide a semiclassical approximation that unifies these two phenomena.

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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 system approach to the spectral (in)stability of black holes under localised potential perturbations

    gr-qc 2026-01 conditional novelty 7.0 of 10

    Black-hole resonances migrate along complex-plane flow lines toward hard-wall attractors, and repellers near the unperturbed modes explain why perturbation theory fails so early.

  2. Black hole absorption cross sections: Spin and Regge poles

    gr-qc 2025-04 conditional novelty 6.0 of 10

    A unified oscillatory formula for Schwarzschild black hole absorption of massless scalar, electromagnetic, and gravitational fields, with spin-dependent phase corrections and a generalized sinc approximation.

  3. Gravitational waves in massive gravity: Waveforms generated by a particle plunging into a black hole and the excitation of quasinormal modes and quasibound states

    gr-qc 2024-11 reject novelty 6.0 of 10

    A plunging particle around a Schwarzschild black hole in massive gravity excites quasibound states, with a claimed harmonic resonance amplifying the even-parity dipole mode.

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