Gravitational perturbations and electromagnetic perturbations of the Bardeen-Kiselev black hole with cosmological constant: quasinormal modes and greybody factors

S. R. Wu, B. Q. Wang, Z. W. Long

Submitted on 12 July 2022


In this work, we investigate the particle dynamics around a static and spherically symmetric Bardeen-Kiselev black hole with cosmological constant which is a solution of the Einstein-non-linear Maxwell field equations along with a quintessential field. We compute the quasinormal frequencies for Bardeen-Kiselev black hole(BH) with cosmological constant due to electromagnetic and gravitational perturbations. By varying the black hole parameters, we discuss the behaviour of both real and imaginary parts of the BH quasinormal frequencies. Interestingly, we find that except for the effect of the normalization factor on the damping rate, the gravitational perturbations and have similar qualitative behavior to electromagnetic perturbations in terms of the other parameters. By using the WKB method, we study the dynamics of perturbation and the scattering from the Bardeen-Kiselev black hole with cosmological constant. Also greybody factors and their variations with BH parameters are investigated.


Subjects: General Relativity and Quantum Cosmology; Astrophysics - Cosmology and Nongalactic Astrophysics