Emission spectra of self-dual black holes

TL;DR

This paper calculates the emission spectra of self-dual black holes, exploring their potential as dark matter candidates by analyzing their particle emission characteristics and spectra.

Contribution

It derives the emission spectra of self-dual black holes, including greybody factors, and assesses their viability as dark matter based on particle emission properties.

Findings

Masses are below the Planck mass.

Black hole temperatures are small compared to their mass.

Derived the spectrum of secondary particles from dark matter halos.

Abstract

We calculate the particle spectra of evaporating self-dual black holes that are potential dark matter candidates. We first estimate the relevant mass and temperature range and find that the masses are below the Planck mass, and the temperature of the black holes is small compared to their mass. In this limit, we then derive the number-density of the primary emission particles, and, by studying the wave-equation of a scalar field in the background metric of the black hole, show that we can use the low energy approximation for the greybody factors. We finally arrive at the expression for the spectrum of secondary particle emission from a dark matter halo constituted of self-dual black holes.