https://doi.org/10.1140/epjp/s13360-020-00322-x
Regular Article
Weak gravitational lensing by stringy black holes
1
Division of Science and Technology, University of Education, Township, Lahore, Pakistan
2
Department of Mathematics, University of Education, Township, Lahore, 54590, Pakistan
3
Instituto de Física, Pontificia Universidad Católica de Valparaíso, Casilla 4950, Valparaiso, Chile
4
Physics Department, Arts and Sciences Faculty, Eastern Mediterranean University, Via Mersin 10, Famagusta, North Cyprus, Turkey
* e-mail: ali.ovgun@pucv.cl
Received:
22
January
2020
Accepted:
7
March
2020
Published online:
16
March
2020
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 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.
© Società Italiana di Fisica and Springer-Verlag GmbH Germany, part of Springer Nature, 2020
