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A note on singular and non-singular black holes

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arxiv 1704.08516 v2 pith:YP3GOY7W submitted 2017-04-27 gr-qc hep-th

classification gr-qchep-th
keywords blacksingularexamplesholeholesonesseveralansatz
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An attempt is made in order to clarify the so called regular black holes issue. It is revisited that if one works within General Relativity minimally coupled with non linear source, mainly of electromagnetic origin, and within a static spherically symmetric ansatz for the metric, there is still room for singular contribution to the black hole solution. A reconstruction method is proposed and several examples are discussed, including new ones. A possible way to obtain a non singular black hole is introduced, and in this case, several known examples are re-discussed, and new ones are provided.

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Cited by 3 Pith papers

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    If a black hole's mass grows with cosmic expansion, Hawking evaporation is slowed or reversed, weakening gamma-ray bounds on primordial black holes.

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    Causality in nonlinear electrodynamics forces the entropy-to-mass-squared ratio of black holes to decrease with mass and the extremal mass-to-charge ratio to increase with charge.

  3. $\tt BlackHawk$ $\tt v3.0$: Hawking Radiation from Regular Black Holes

    gr-qc 2026-06 unverdicted novelty 5.0 of 10

    BlackHawk v3.0 adds Hawking temperatures and greybody factors for multiple regular black hole metrics to an existing public code via numerical routines.

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