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arXiv · 2506.20044

Hair imprints of the gravitational decoupling and hairy black hole spectroscopy

V. F. Guimarães·R. T. Cavalcanti·R. da Rocha
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Abstract

Hairy black holes by gravitational decoupling (GD) are probed to derive the gravitational waveform produced by perturbation theory applied to these compact objects. Using the Regge-Wheeler and Zerilli equations governing the metric perturbations and applying a higher-order WKB method, the quasinormal modes (QNMs) are computed and discussed. Compared to the QNMs produced in the ringdown phase of Reissner-Nordstr\"om black hole solutions, it yields a clear physical signature of primary hair imprinting the hairy GD black hole gravitational waveforms.

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V. F. Guimarães, R. T. Cavalcanti, R. da Rocha. 2025-06-24. Hair imprints of the gravitational decoupling and hairy black hole spectroscopy. https://doi.org/10.1088/1361-6382%2Fadfda5

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