Constraints on late-forming exploding black holes
Cosmology and Nongalactic Astrophysics
2023-09-06 v2 High Energy Astrophysical Phenomena
High Energy Physics - Phenomenology
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.
Cite
@article{arxiv.2305.13429,
title = {Constraints on late-forming exploding black holes},
author = {Zachary S. C. Picker and Alexander Kusenko},
journal= {arXiv preprint arXiv:2305.13429},
year = {2023}
}
Comments
Final version, some small changes to text and updated final constraints