Derives gamma-ray upper limits on memory-burdened PBH dark matter abundance using graviton-photon conversion during recombination and merger-induced semiclassical evaporation, excluding mass windows 7.5e5-4.4e7 g and below 2.2e11 g under stated assumptions.
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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.
Memory-burden backreaction deforms the Hawking spectrum to suppress its high-energy tail, lowering total luminosity and neutrino flux by a factor set by a single suppression parameter and thereby relaxing IceCube bounds on primordial black hole 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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Constraining memory-burdened primordial black holes with graviton-photon conversion and binary mergers
Derives gamma-ray upper limits on memory-burdened PBH dark matter abundance using graviton-photon conversion during recombination and merger-induced semiclassical evaporation, excluding mass windows 7.5e5-4.4e7 g and below 2.2e11 g under stated assumptions.
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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.
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Memory-Burden Suppression of Hawking Radiation and Neutrino Constraints on Primordial Black Holes
Memory-burden backreaction deforms the Hawking spectrum to suppress its high-energy tail, lowering total luminosity and neutrino flux by a factor set by a single suppression parameter and thereby relaxing IceCube bounds on primordial black hole dark matter.
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WIMP/FIMP dark matter and primordial black holes with memory burden effect
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.