The evaporating primordial black hole fraction in cool-core galaxy clusters
High Energy Astrophysical Phenomena
2021-05-12 v1
Abstract
Recent studies of gamma-ray, cosmic-ray and radio data put stringent constraints on the fraction of primordial black holes (PBHs) in our universe. In this article, we propose a new indirect method in using the X-ray luminosity data of cool-core clusters to constrain the evaporating PBH fraction for the monochromatic, log-normal and power-law mass distributions. The present results show that the amount of evaporating PBHs only constitutes a minor component of dark matter for a large parameter space. The constraints are consistent with and close to that obtained from other cosmic-ray and multi-wavelength observations.
Keywords
Cite
@article{arxiv.2103.12354,
title = {The evaporating primordial black hole fraction in cool-core galaxy clusters},
author = {Chak Man Lee and Man Ho Chan},
journal= {arXiv preprint arXiv:2103.12354},
year = {2021}
}