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Weak Gravitational Lensing by Stringy Black Holes
Version 1
: Received: 1 December 2019 / Approved: 4 December 2019 / Online: 4 December 2019 (10:12:06 CET)
A peer-reviewed article of this Preprint also exists.
Abstract
In this paper, we discuss the weak gravitational lensing in the context of stringy black holes. Initially, we examine the deflection angle of photon by charged stringy black hole. For this desire, we compute the Gaussian optical curvature and implement the Gauss-Bonnet theorem to investigate the deflection angle for spherically balanced spacetime of stringy black hole. We also analyze the influence of plasma medium in the weak gravitational lensing for stringy black hole. Moreover, the graphical impact of coupling constant $\alpha$, impact parameter $b$ , black hole charge $Q$ on deflection angle by charged stringy black hole has been studied in plasma as well as non-plasma medium.
Keywords
Weak gravitational lensing; Stringy black hole; Deflection angle; Gauss-Bonnet theorem
Subject
Physical Sciences, Atomic and Molecular Physics
Copyright: This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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