Nonsingular Model of Magnetized Black Hole Based on Nonlinear Electrodynamics

Sergey I. Kruglov

doi:10.20944/preprints201910.0278.v1

Preprint Article Version 1 This version is not peer-reviewed

Nonsingular Model of Magnetized Black Hole Based on Nonlinear Electrodynamics

Version 1 : Received: 23 October 2019 / Approved: 24 October 2019 / Online: 24 October 2019 (11:10:19 CEST)
Version 2 : Received: 11 December 2019 / Approved: 11 December 2019 / Online: 11 December 2019 (03:02:35 CET)

A peer-reviewed article of this Preprint also exists.

Kruglov, S.I. Non-Singular Model of Magnetized Black Hole Based on Nonlinear Electrodynamics. Universe 2019, 5, 225. Kruglov, S.I. Non-Singular Model of Magnetized Black Hole Based on Nonlinear Electrodynamics. Universe 2019, 5, 225.

Journal reference: Universe 2019, 5, 225
DOI: 10.3390/universe5120225

Abstract

We find solutions of a magnetically charged non-singular black hole in some modified theory of gravity coupled with nonlinear electrodynamics. The metric of a magnetized black hole is obtained which has one (an extreme horizon), two horizons, or no horizons (naked singularity). Corrections to the Reissner-Nordstrom solution are found as the radius approaches to infinity. The asymptotic of the Ricci and Kretschmann scalars are calculated showing the absence of singularities. We study the thermodynamics of black holes by calculating the Hawking temperature and the heat capacity. It is demonstrated that phase transitions take place and we show that black holes are thermodynamically stable at some range of parameters.

Subject Areas

non-singular black hole; modified theory of gravity; nonlinear electrodynamics; reissner-nordstr\"{o}m solution; thermodynamics; Hawking temperature

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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