Braneworld black holes as gravitational lenses

TL;DR

This paper investigates braneworld black holes as gravitational lenses, analyzing the formation of relativistic images in the strong field limit and discussing their potential observability.

Contribution

It applies the strong field limit method to braneworld black holes, exploring the characteristics and observability of relativistic images.

Findings

Relativistic images can be produced by braneworld black holes.

The strong field limit provides an analytical framework for these images.

Observability of relativistic images depends on specific black hole parameters.

Abstract

Black holes acting as gravitational lenses produce, besides the primary and secondary weak field images, two infinite sets of relativistic images. These images can be studied using the strong field limit, an analytic method based on a logarithmic asymptotic approximation of the deflection angle. In this work, braneworld black holes are analyzed as gravitational lenses in the strong field limit and the feasibility of observation of the images is discussed.