Spherical Skyrmion black holes as gravitational lenses

TL;DR

This paper extends the strong deflection limit method to calculate light deflection around spherical black holes in Einstein-Skyrme theory, analyzing relativistic images and comparing with Schwarzschild and monopole spacetimes.

Contribution

It introduces a novel application of the strong deflection limit to Einstein-Skyrme black holes and derives their gravitational lensing characteristics.

Findings

Calculated deflection angles for Einstein-Skyrme black holes.

Determined positions and magnifications of relativistic images.

Compared lensing effects with Schwarzschild and monopole spacetimes.

Abstract

In this article, we extend the strong deflection limit to calculate the deflection angle for a class of geometries which are asymptotically locally flat. In particular, we study the deflection of light in the surroundings of spherical black holes in Einstein-Skyrme theory. We find the deflection angle in this limit, from which we obtain the positions and the magnifications of the relativistic images. We compare our results with those corresponding to the Schwarzschild and the global monopole (Barriola-Vilenkin) spacetimes.