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

TL;DR

This paper studies how Lorentz symmetry breaking affects the quasinormal modes and greybody factors of Kerr-like black holes in bumblebee gravity, using semi-analytic and numerical methods.

Contribution

It introduces analysis of LSB effects on QNMs and GFs of Kerr-like black holes within the bumblebee gravity model, combining semi-analytic and time domain approaches.

Findings

LSB influences the QNM frequencies and damping times.

LSB modifies the greybody factors for scalar and fermionic fields.

Results are visualized and discussed in detail.

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.