Bremsstrahlung Effects around Evaporating Black Holes

TL;DR

This paper examines bremsstrahlung processes around evaporating black holes, showing that emitted charged particles produce negligible bremsstrahlung photons from scattering, but inner bremsstrahlung dominates at low frequencies, challenging previous claims of QED photosphere formation.

Contribution

It provides a detailed analysis demonstrating that hot evaporating black holes do not form QED photospheres, countering prior assertions in the literature.

Findings

Negligible bremsstrahlung photon production from particle scattering.

Inner bremsstrahlung dominates at low frequencies.

Refutes Heckler's claim of QED photosphere formation.

Abstract

We discuss a variety of bremsstrahlung processes associated with charged particles emitted by evaporating black holes. We show that such particles produce a negligible number of bremsstrahlung photons from their scattering off each other, though at low frequencies inner bremsstrahlung photons dominate over the direct Hawking emission of photons. This analysis and the further analysis of the accompanying paper invalidate Heckler's claim that sufficiently hot evaporating black holes form QED photospheres.