Hawking radiation particle spectrum of a Kerr-Newman black hole

TL;DR

This paper models Hawking radiation from Kerr-Newman black holes using a simplified (1+1)-dimensional mirror approach, deriving the particle spectrum and energy emission characteristics across different black hole parameters.

Contribution

It introduces a novel simplified model for Hawking radiation from Kerr-Newman black holes using a flat spacetime mirror analogy, extending to extremal cases.

Findings

Derived the particle spectrum and thermal distribution for Kerr-Newman black holes.

Computed the total energy emitted by the black hole.

Extended the model to extremal Kerr-Newman black holes.

Abstract

Charged, rotating Kerr-Newman black holes represent the most general class of asymptotically flat black hole solutions to the Einstein-Maxwell equations of general relativity. Here, we consider a simplified model for the Hawking radiation produced by a Kerr-Newman black hole by utilising a (1+1)-dimensional accelerated boundary correspondence (i.e. a flat spacetime mirror trajectory) in Minkowski spacetime. We derive the particle spectrum and its late-time thermal distribution which reduces to the Kerr, Reissner-Nordstr\"om and Schwarzschild cases in the appropriate limits. We also compute the particle spectrum of the extremal Kerr-Newman system and the total energy emitted.