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

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 $f_{\mathrm{PBH}}$. Our results highlight the efficacy of MeV observations in DM-dense environments. The constraints on $f_{\mathrm{PBH}}$ for PBHs in the mass range of $10^{16}-10^{17}\mathrm{g}$ can be improved significantly compared with the current observations.

7 pages, 6 figures, accepted by PRD

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Cited by in corpus (3)

• Cosmological abundance of primordial black holes in mixed dark matter scenarios incorporating Kaluza-Klein dark matter
• Indirect detection of dark matter absorption in the Galactic Center
• Unveiling axion signals in galactic supernovae with future MeV telescopes