paper

Correspondence between grey-body factors and quasinormal frequencies for rotating black holes

arXiv:2408.11162 · doi:10.1016/j.physletb.2025.139288

Abstract

Although the proper oscillation frequencies of black holes (quasinormal modes) and the grey-body factors, which determine the scattering properties of black holes, represent two distinct spectral problems with different boundary conditions, a recent study has revealed an intrinsic connection between these quantities. We have shown that the correspondence between grey-body factors and quasinormal modes, previously established for spherically symmetric and asymptotically flat black holes, also extends to general parametrized axially symmetric black holes. This correspondence is limited to non-superradiant waves.

7 pages, 3 figures

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