Dyonic Reissner-Nordstrom Black Holes and Superradiant Stability
arXiv:2105.14702 · doi:10.1140/epjc/s10052-021-09642-3
Abstract
Black holes immersed in magnetic fields are believed to be important systems in astrophysics. One interesting topic on these systems is their superradiant stability property. In the present paper, we analytically obtain the superradiantly stable regime for the asymptotically flat dyonic Reissner-Nordstrom black holes with charged massive scalar perturbation. The effective potential experienced by the scalar perturbation in the dyonic black hole background is obtained and analyzed. It is found that the dyonic black hole is superradiantly stable in the regime , where are the event horizons of the dyonic black hole. Compared with the purely electrically charged Reissner-Nordstrom black hole case, our result indicates that the additional coupling of the charged scalar perturbation with the magnetic field makes the black hole and scalar perturbation system more superradiantly unstable, which provides further evidence on the instability induced by magnetic field in black hole superradiance process.
References in corpus (10)
- Stability of Reissner-Nordström black hole in de Sitter background under charged scalar perturbation
- Quasinormal modes of black holes immersed in a strong magnetic field
- Stability of highly-charged Reissner-Nordström black holes to charged scalar perturbations
- Superradiant instability for black holes immersed in a magnetic field
- Superradiant instability of black holes immersed in a magnetic field
- Numerical study of superradiant instability for charged stringy black hole-mirror system
- Superradiant instability of the charged scalar field in stringy black hole mirror system
- Superradiant instability of D-dimensional Reissner-Nordström black hole mirror system
- Instability of Reissner-Nordström-AdS black hole under perturbations of a scalar field coupled to Einstein tensor
- Extremal rotating black holes, scalar perturbation and superradiant stability