Regular Article - Theoretical Physics
Instability of the charged massive scalar field on the Kerr–Newman black hole spacetime
Theoretical Astrophysics, Institute for Astronomy and Astrophysics, University of Tübingen, 72076, Tübingen, Germany
2 Departamento de Física, Universidade Federal da Paraíba, Caixa Postal 5008, CEP 58051-970, João Pessoa, PB, Brazil
3 Grupo de Física Teórica (GFT), Universidade Estadual do Ceará, UECE-FECLI, Iguatu, CE, Brazil
Accepted: 10 October 2022
Published online: 20 October 2022
We investigate the quasibound states of charged massive scalar fields in the Kerr–Newman black hole spacetime by using a new approach recently developed, which uses the polynomial conditions of the Heun functions. We calculate the resonant frequencies related to the spectrum of quasibound states, as well as its corresponding angular and radial wave eigenfunctions. We also analyze the instability of the system. These results are particularized to the cases of Schwarzschild and Kerr black holes. Additionally, we compare our analytical results with the numerical ones known in the literature. Finally, we apply the obtained results to compute the characteristic times of growth and decay of bosonic particles around a supermassive black hole situated at the center of the M87 galaxy.
© The Author(s) 2022
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