Shadows and quasinormal modes of the Bardeen black hole in cloud of strings

TL;DR

This paper studies the shadows and quasinormal modes of a Bardeen black hole within a cloud of strings, revealing how these features depend on black hole parameters and exhibit mimicking behavior.

Contribution

It introduces a novel analysis of the Bardeen black hole with a cloud of strings, examining horizon structure, shadows, and quasinormal modes in this context.

Findings

Shadow size exceeds horizon radius and photon sphere.

Shadow radius and QNM frequencies depend on black hole parameters.

Shadow and QNM characteristics show mimicking behavior.

Abstract

We investigate the black hole (BH) solution of the Einstein's gravity coupled with non-linear electrodynamics (NED) source in the background of a cloud of strings. We analyze the horizon structure of the obtained BH solution. The optical features of the BH are explored. The photon radius and shadows of the BH are obtained as a function of black hole parameters. We observe that the size of the shadow image is bigger than its horizon radius and photon sphere. We also study the Quasinormal modes (QNM) using WKB formula for this black hole. The dependence of shadow radius and QN modes on black hole parameters reflects that they are mimicker to each other.