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Open AccessArticle

Non-Singular Model of Magnetized Black Hole Based on Nonlinear Electrodynamics

1
Department of Physics, University of Toronto, 60 St. Georges St., Toronto, ON M5S 1A7, Canada
2
Department of Chemical and Physical Sciences, University of Toronto Mississauga, 3359 Mississauga Road North, Mississauga, ON L5L 1C6, Canada
Universe 2019, 5(12), 225; https://doi.org/10.3390/universe5120225
Received: 15 October 2019 / Revised: 8 December 2019 / Accepted: 10 December 2019 / Published: 13 December 2019
(This article belongs to the Special Issue Probing New Physics with Black Holes)
A new modified Hayward metric of magnetically charged non-singular black hole spacetime in the framework of nonlinear electrodynamics is constructed. When the fundamental length introduced, characterising quantum gravity effects, vanishes, one comes to the general relativity coupled with the Bronnikov model of nonlinear electrodynamics. The metric can have one (an extreme) horizon, two horizons of black holes, or no horizons corresponding to the particle-like solution. Corrections to the Reissner–Nordström solution are found as the radius approaches infinity. As r 0 the metric has a de Sitter core showing the absence of singularities, the asymptotic of the Ricci and Kretschmann scalars are obtained and they are finite everywhere. The thermodynamics of black holes, by calculating the Hawking temperature and the heat capacity, is studied. It is demonstrated that phase transitions take place when the Hawking temperature possesses the maximum. Black holes are thermodynamically stable at some range of parameters. View Full-Text
Keywords: modified Hayward metric; magnetically charged black hole; nonlinear electrodynamics; thermodynamics modified Hayward metric; magnetically charged black hole; nonlinear electrodynamics; thermodynamics
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Kruglov, S.I. Non-Singular Model of Magnetized Black Hole Based on Nonlinear Electrodynamics. Universe 2019, 5, 225.

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