Quasinormal Modes and Optical Properties of 4-D black holes in Einstein Power-Yang-Mills Gravity

TL;DR

This study investigates how the Yang-Mills charge and exponent parameters influence the quasinormal modes, shadow, and evaporation of 4D black holes in Einstein Power-Yang-Mills gravity, revealing opposite effects of these parameters.

Contribution

It provides a detailed analysis of the effects of Yang-Mills charge and exponent parameters on black hole properties in Einstein Power-Yang-Mills theory, highlighting their opposite impacts.

Findings

Yang-Mills charge increases real quasinormal frequencies

Yang-Mills charge reduces black hole shadow size

Yang-Mills charge lowers evaporation rate

Abstract

This paper explores the impact of the Yang-Mills charge parameter and the exponent term on a $4$D black hole solution in the Einstein Power-Yang-Mills theory. Through an investigation of the massless scalar quasinormal mode spectrum, black hole shadow, and emission rate, we have determined that the effects of these two parameters are opposite. Specifically, the Yang-Mills charge parameter causes an increase in the real quasinormal frequencies with a correspondingly smaller damping rate. It also results in a smaller black hole shadow and a lower evaporation rate.