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DOE OSTI · 2255197

Constraints on late-forming exploding black holes

Picker, Zachary S. C.·Kusenko, Alexander
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Abstract

Black holes can be produced in collapse of small-scale dark matter structures, which can happen at any time from the early to present-day Universe. Microstructure black holes (MSBHs) can have a wide range of masses. Here, small MSBHs evaporate via Hawking radiation with lifetimes shorter than the age of the Universe, but they are not subject to the usual early-Universe bounds on the abundance of small primordial black holes. We investigate the possible signal of such a population of exploding, late-forming black holes, constraining their abundance with observations from diffuse extragalactic gamma- and x-ray sources, the Galactic Center, and dwarf spheroidal galaxies.

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79 ASTRONOMY AND ASTROPHYSICSAstronomical black holesDark matterGamma ray astronomyMassive compact halo objectsParticle dark matterX ray astronomy

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Picker, Zachary S. C., Kusenko, Alexander. 2023-07-14. Constraints on late-forming exploding black holes. https://doi.org/10.1103/physrevd.108.023012

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