Constraints on late-forming exploding black holes

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. 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.

arXiv commentFinal version, some small changes to text and updated final constraints

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Cited by in corpus (6)

• Searching for Exploding Black Holes
• Dissipative Dark Cosmology: From Early Matter Dominance to Delayed Compact Objects
• Feeding plankton to whales: high-redshift supermassive black holes from tiny black hole explosions
• Black Holes from Fermi Ball Collapse
• Late-forming black holes and the antiproton, gamma-ray, and anti-helium excesses
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