Gravitational lensing by Einstein-Born-Infeld black holes

TL;DR

This paper investigates how Einstein-Born-Infeld black holes act as gravitational lenses, analyzing image positions and magnifications, and comparing results with Reissner-Nordstrom black holes for different astrophysical scenarios.

Contribution

It introduces a detailed analysis of gravitational lensing by Einstein-Born-Infeld black holes, highlighting differences from classical solutions and applying the model to real astrophysical objects.

Findings

Relativistic image positions differ from Reissner-Nordstrom black holes.

Magnification patterns vary with black hole charge and type.

Results applicable to supermassive and small black holes in the galaxy.

Abstract

In this paper, charged black holes in general relativity coupled to Born-Infeld electrodynamics are studied as gravitational lenses. The positions and magnifications of the relativistic images are obtained using the strong deflection limit, and the results are compared with those corresponding to a Reissner-Nordstrom black hole with the same mass and charge. As numerical examples, the model is applied to the supermassive Galactic center black hole and to a small size black hole situated in the Galactic halo.