Primordial Black Holes
Jane H MacGibbon, Tilan N. Ukwatta, J.T. Linnemann, S.S. Marinelli, D., Stump, K. Tollefson
TL;DR
Primordial Black Holes are hypothetical early-universe objects that could be detected via their Hawking radiation, contributing to gamma-ray backgrounds or bursts, with current observatories providing the best detection sensitivity.
Contribution
This paper reviews the potential for detecting primordial black holes through their Hawking radiation using current gamma-ray observatories.
Findings
PBHs lighter than 10^12 kg emit detectable Hawking radiation.
Gamma-ray observatories can constrain PBH abundance.
Detection methods are improving with new burst recognition techniques.
Abstract
Primordial Black Holes (PBHs) are of interest in many cosmological contexts. PBHs lighter than about 1012 kg are predicted to be directly detectable by their Hawking radiation. This radiation should produce both a diffuse extragalactic gamma-ray background from the cosmologically-averaged distribution of PBHs and gamma-ray burst signals from individual light black holes. The Fermi, Milagro, Veritas, HESS and HAWC observatories, in combination with new burst recognition methodologies, offer the greatest sensitivity for the detection of such black holes or placing limits on their existence.
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Taxonomy
TopicsGamma-ray bursts and supernovae · Pulsars and Gravitational Waves Research · Cosmology and Gravitation Theories