Hair imprints of the gravitational decoupling and hairy black hole spectroscopy
arXiv:2506.20044 · doi:10.1088/1361-6382/adfda5
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-Nordström black hole solutions, it yields a clear physical signature of primary hair imprinting the hairy GD black hole gravitational waveforms.
arXiv comment40 pages, 12 figures
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