The evaporating primordial black hole fraction in cool-core galaxy clusters

Chak Man LEE, Man Ho CHAN

Research output: Contribution to journalArticlespeer-review

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 multiwavelength observations. Copyright © 2021 The American Astronomical Society. All rights reserved.
Original languageEnglish
Article number24
JournalThe Astrophysical Journal
Volume912
Issue number1
Early online dateApr 2021
DOIs
Publication statusPublished - May 2021

Citation

Lee, C. M., & Chan, M. H. (2021). The evaporating primordial black hole fraction in cool-core galaxy clusters. The Astrophysical Journal, 912(1). Retrieved from https://doi.org/10.3847/1538-4357/abee72

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