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Strong field gravitational lensing by a stringy charged black hole

  • Nuclei, Particles, Fields, Gravitation, and Astrophysics
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Abstract

In this paper, we study gravitational lensing of magnetically charged black hole of string theory as a strong field approximation for the supermassive black hole at the center of NGC4486B. We evaluate light deflection angle numerically, from which we obtain magnifications, Einstein rings and observables for the relativistic images. Finally, we explore time delay between relativistic images when they are on the same as well as opposite side of the lens. It is concluded that charge parameter plays a prominent role in the strong gravitational lensing.

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Authors and Affiliations

  1. Department of Mathematics, University of the Punjab, Quaid-e-Azam Campus, Lahore, 54590, Pakistan

    M. Sharif

  2. Department of Mathematics, Lahore College for Women University, Lahore, 54000, Pakistan

    S. Iftikhar

Authors
  1. M. Sharif
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  2. S. Iftikhar
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Correspondence to M. Sharif.

Additional information

Published in Russian in Zhurnal Eksperimental’noi i Teoreticheskoi Fiziki, 2017, Vol. 151, No. 6, pp. 1041–1051.

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Sharif, M., Iftikhar, S. Strong field gravitational lensing by a stringy charged black hole. J. Exp. Theor. Phys. 124, 886–894 (2017). https://doi.org/10.1134/S1063776117050065

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  • DOI: https://doi.org/10.1134/S1063776117050065

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