Greybody Radiation and Quasinormal Modes of Kerr-like Black Hole in Bumblebee Gravity Model

Abstract

In the framework of the Lorentz symmetry breaking (LSB), we investigate the quasinormal modes (QNMs) and the greybody factors (GFs) of the Kerr-like black hole spacetime obtained from the bumblebee gravity model. In particular, we analyze the scalar and fermionic perturbations of the black hole within the framework of both semi-analytic WKB method and the time domain approach. The impacts of the LSB on the bosonic/fermionic QNMs and GFs of the Kerr-like black hole are investigated in detail. The obtained results are graphically depicted and discussed.

The gravitational bending angle by static and spherically symmetric black holes in bumblebee gravity

“…( 31) became eq. (32). In case b), when both the receiver and the source are very far from the lens (bu R ≈ bu S ≈ 0), eq.…”

“…Moreover, Ding and Chen found an exact slowly rotating Einstein-bumblebee black hole solution and investigated the LSB effects in the black hole greybody factor [31]. Recently, Kanzi and Sakalli investigated the impacts of the LSB on the bosonic/fermionic quasinormal modes and greybody factors of the Kerr-like black hole in bumblebee gravity [32].…”