Effect of nonlinear electrodynamics on the weak field deflection angle by a black hole

Wajiha Javed, Ali Hamza, ALI OVGUN

Research output: Contribution to journalArticlepeer-review

6 Scopus citations

Abstract

In this work we investigate the weak deflection angle of light from an exact black hole within nonlinear electrodynamics. First, we calculate the Gaussian optical curvature using the optical spacetime geometry. With the help of modern geometrical methods popularized by Gibbons and Werner, we examine the deflection angle of light from an exact black hole. To do this, we determine the optical Gaussian curvature and apply the Gauss-Bonnet theorem to the optical metric and calculate the leading terms of the deflection angle in the weak-limit approximation. Furthermore, we also study the plasma medium's effect on weak gravitational lensing by an exact black hole. Hence, we determine the effect of nonlinear electrodynamics on the deflection angle in a weak gravitational field.

Original languageEnglish
Article number103521
JournalPhysical Review D
Volume101
Issue number10
DOIs
StatePublished - 15 May 2020
Externally publishedYes

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