Continuous memory-burden crossovers in PBH evaporation yield distinct BBN exclusion curves for PBH dark matter, with additive combinations allowing higher abundances than multiplicative ones.
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Calculations indicate AMEGO-X could detect PBH transits within 0.1 AU while HAWC and LHAASO could observe explosions out to 0.1-0.5 pc, with future events at ~1000 AU potentially producing measurable electromagnetic signals unlike the 2023 KM3NeT neutrino candidate.
Combining regular black hole metrics with memory burden suppresses evaporation and opens a 10^6-10^8 g PBH mass window that can comprise all dark matter.
Authors calculate relic abundance of dark matter as sum of thermal WIMP/FIMP production, Hawking radiation from PBHs, and surviving PBHs under memory burden, under conditions where thermal production dominates and PBHs do not dominate energy density.
citing papers explorer
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BBN constraints on primordial black holes with a continuous memory-burden crossover
Continuous memory-burden crossovers in PBH evaporation yield distinct BBN exclusion curves for PBH dark matter, with additive combinations allowing higher abundances than multiplicative ones.
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Electromagnetic Signatures From Primordial Black Holes in the Solar System
Calculations indicate AMEGO-X could detect PBH transits within 0.1 AU while HAWC and LHAASO could observe explosions out to 0.1-0.5 pc, with future events at ~1000 AU potentially producing measurable electromagnetic signals unlike the 2023 KM3NeT neutrino candidate.
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Memory burden effect of regular primordial black holes
Combining regular black hole metrics with memory burden suppresses evaporation and opens a 10^6-10^8 g PBH mass window that can comprise all dark matter.