https://doi.org/10.1140/epjp/s13360-022-03407-x
Regular Article
Echoes of the gravitational decoupling: scalar perturbations and quasinormal modes of hairy black holes
1
Center of Mathematics, Federal University of ABC, 09210-580, Santo André, Brazil
2
DFI, Universidade Estadual Paulista, Unesp, 12516-410, Guaratinguetá, Brazil
a
rogerio.cavalcanti@ufabc.edu.br
Received:
12
September
2022
Accepted:
17
October
2022
Published online:
27
October
2022
The behavior of hairy black hole solutions, obtained by the gravitational decoupling (GD) method, is investigated under scalar perturbations. The quasinormal mode frequencies of such solutions are regulated by GD hair. The numerically generated wave solutions are derived for a range of values for the GD hairy black hole parameters, with higher-frequency modes very sensitive to them. The results are confronted with the corresponding ones for the Schwarzschild solution, whose deviations from it demonstrate a unique physical identification of GD hairy black holes. The method here presented comprises the first steps toward the obtainment of the observable signature of GD hairy black holes at ground-based detectors, emitted from coalescing binary systems of GD hairy black hole mergers in the ringdown phase.
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© The Author(s), under exclusive licence to Società Italiana di Fisica and Springer-Verlag GmbH Germany, part of Springer Nature 2022. Springer Nature or its licensor (e.g. a society or other partner) holds exclusive rights to this article under a publishing agreement with the author(s) or other rightsholder(s); author self-archiving of the accepted manuscript version of this article is solely governed by the terms of such publishing agreement and applicable law.
