Reissner-Nordstrom black hole lensing
Ernesto F. Eiroa, Gustavo E. Romero, Diego F. Torres
TL;DR
This paper analyzes the gravitational lensing effects of Reissner-Nordstrom black holes, deriving equations for relativistic images and applying the model to low-mass black holes in galactic halos.
Contribution
It provides analytical expressions for relativistic image positions and magnifications around charged black holes, extending previous Schwarzschild black hole lensing models.
Findings
Relativistic images form in Reissner-Nordstrom black hole lensing.
Analytical formulas for image positions and amplifications are derived.
Application to low-mass galactic halo black holes demonstrates practical relevance.
Abstract
In this paper we study the strong gravitational lensing scenario where the lens is a Reissner-Nordstrom black hole. We obtain the basic equations and show that, as in the case of Schwarzschild black hole, besides the primary and secondary images, two infinite sets of relativistic images are formed. We find analytical expressions for the positions and amplifications of the relativistic images. The formalism is applied to the case of a low-mass black hole placed at the galactic halo.
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