Light Deflection Angle by Superentropic Black Holes

TL;DR

This paper investigates how light rays are deflected by superentropic black holes in AdS geometries, revealing unique behaviors in the deflection angle influenced by black hole parameters.

Contribution

It provides a new analysis of light deflection angles specifically for superentropic black holes, extending understanding beyond ordinary black holes.

Findings

Deflection angle approaches zero for large impact parameters in non-AdS black holes.

Graphical analysis shows the influence of black hole mass on light deflection.

The study highlights differences in optical properties between superentropic and ordinary black holes.

Abstract

Motivated by recent works on light deflection and shadow behaviors on AdS geometries, we investigate the deflection angle of light rays by superentropic black holes. Taking appropriate approximations, we first obtain the involved expression. For large values of the impact parameter, we get a specific value being zero for ordinary black holes without AdS backgrounds. Then, we examine and analyze such an optical quantity by providing graphical discussions in terms of a bounded region of the moduli space required by superentropic black hole conditions. Concretely, we study the deflection angle aspects by varying the black hole mass being fixed in the previous findings.