Limits on the Primordial Black Holes Dark Matter with future MeV detectors

2024/01/12 by Zhen Xie, Xie, Zhen, Bing Liu +7 · 1 citation
Physics and Astronomy · #Cosmology and Gravitation Theories #Dark Matter and Cosmic Phenomena #FOS: Physical sciences #Galaxies: Formation, Evolution, Phenomena #High Energy Astrophysical Phenomena (astro-ph.HE)

paper · pdf · doi:10.48550/arxiv.2401.06440

openalex publication_date 2024/01/12 · openalex created_date 2024/01/16 · openalex updated_date 2026/07/28

Abstract

Primordial black holes (PBHs) are a compelling candidate for Dark Matter (DM). There remain significant parameter spaces to be explored despite current astrophysical observations have set strong limits. Utilizing advanced MeV observation instruments, we have statistically established the upper limit of Hawking radiation emitted by PBHs in DM-dense systems, such as galaxy clusters or dwarf galaxies. These results can set a stringent upper limit on the ratio of PBH to DM, expressed as f_{\rm PBH}. Our results highlight the efficacy of MeV observations in DM-dense environments. The constraints on f_{\rm PBH} for PBHs in the mass range of 10¹⁶-10¹⁷ ~\rm g can be improved significantly compared with the current observations.

Cited by

• newASTROGAM -- The New MeV to GeV Gamma-ray Observatory

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