Massive charged scalar field in the Kerr-Newman background II: Hawking radiation

Abstract

We perform accurate calculations of the energy-, momentum-, and charge-emission rates of a charged scalar field in the background of the Kerr-Newman black hole at the range of parameters for which the effect is not negligibly small and, at the same time, the semiclassical regime is, at least marginally, valid. For black holes with charge below or not much higher than the charge accretion limit $Q\sim \mu M/e$ (where $e$ and $\mu$ are the electron's mass and charge), the time between the consequent emitting of two charged particles is very large. For primordial black holes the transition between the increasing and decreasing of the ratio $Q/M$ occurs around the charge accretion limit. The rotation increases the intensity of radiation up to three orders, while the effect of the field's mass strongly suppresses the radiation.

arXiv comment6 pages, 3 figures

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• On-axis scattering of scalar fields by charged rotating black holes
• Analysis of a nonlinear electromagnetic generalization of the Reissner-Nordström black hole
• Long-lived modes and grey-body factors of massive fields in quantum-corrected (Hayward) black holes
• Greybody Factors of Massive Charged Fermionic Fields in a Charged Two-Dimensional Dilatonic Black Hole