Quasinormal modes of Charged Regular Black Hole

TL;DR

This paper calculates the quasinormal modes of a charged regular black hole using the eikonal approximation, revealing how certain parameters influence the modes and comparing them with those of Reissner-Nordström black holes.

Contribution

It introduces the calculation of QNMs for a charged regular black hole in the eikonal limit and analyzes the impact of specific parameters on these modes.

Findings

QNMs are influenced by an effective cosmological constant at small distances.

The behaviors of QNMs vary with black hole parameters.

Comparison with Reissner-Nordström black holes highlights differences.

Abstract

The quasinormal modes (QNMs) of a regular black hole with charge are calculated in the eikonal approximation. In the eikonal limit the QNMs of black hole are determined by the parameters of the unstable circular null geodesics. The behaviors of QNMs are compared with QNMs of Reisner-Nordstr\"{o}m black hole, it is done by fixing some of the parameters that characterize the black holes and varying another. We observed that the parameter that is related one effective cosmological constant at small distances , determines the behaviors of the QNMs of regular black hole with charge.