Can a light ray distinguish the charge of a black hole in nonlinear electrodynamics?
Toshmatov B. Ahmedov B. Malafarina D.
12 January 2021American Physical Society
Physical Review D
2021#103Issue 2
It is a well-known fact that light rays do not follow the null geodesics of the space-time in nonlinear electrodynamics; instead, they follow the null geodesics of the so-called effective space-time. Taking this into account, in this paper, we aim to discuss the possibility of distinguishing the type of charge with which the black hole is endowed, via the motion of light rays. The results show that, for any black hole being a charged solution of the field equations of general relativity coupled to the nonlinear electrodynamics, one cannot distinguish the two types of charge (magnetic or electric) through the motion of light rays around it.
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Ulugh Beg Astronomical Institute, Astronomy 33, Tashkent, 100052, Uzbekistan
Webster University in Tashkent, Alisher Navoiy 13, Tashkent, 100011, Uzbekistan
Tashkent Institute of Irrigation and Agricultural Mechanization Engineers, Kori Niyoziy 39, Tashkent, 100000, Uzbekistan
Department of Physics, Nazarbayev University, 53 Kabanbay Batyr, Nur-Sultan, 010000, Kazakhstan
Ulugh Beg Astronomical Institute
Webster University in Tashkent
Tashkent Institute of Irrigation and Agricultural Mechanization Engineers
Department of Physics
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