Can one increase the luminosity of a Schwarzschild black hole?

TL;DR

This paper investigates how electrostatic self-interactions and nearby charged objects influence Hawking radiation from Schwarzschild black holes, suggesting potential modifications to black hole luminosity.

Contribution

It introduces a semiclassical analysis of electrostatic self-interactions affecting Hawking radiation and pair creation near Schwarzschild black holes.

Findings

Self-interacting charged particles have higher escape probabilities.

Electric potentials near black holes can induce pair creation.

The energy source for enhanced radiation is discussed.

Abstract

We illustrate how Hawking's radiance from a Schwarzschild black hole is modified by the electrostatic self-interaction of the emitted charged particles. A W.K.B approximation shows that the probability for a self-interacting charged particle to propagate from the interior to the exterior of the horizon is increased relative to the corresponding probability for neutral particles. We also demonstrate how the electric potential of a charged test object in the black hole's vicinity gives rise to pair creation. We analyze this phenomenon semiclassically by considering the existence of the appropriate Klein region. Finally we discuss the possible energy source for the process.