An improved gamma-ray limit on the density of PBHs
Astrophysics
2007-05-23 v1
Abstract
Gamma-rays are, with antiprotons, a very efficient way to derive upper limits on the density of evaporating black holes. They have been successfully used in the last decades to severely constrain the amount of Primordial Black Holes (PBHs) in our Universe. This article suggests a little refinement, based on the expected background, to improve this limit by a factor of three. The resulting value is : Omega_PBH < 3.3E-9.
Keywords
Cite
@article{arxiv.astro-ph/0304528,
title = {An improved gamma-ray limit on the density of PBHs},
author = {A. Barrau and G. Boudoul and L. Derome},
journal= {arXiv preprint arXiv:astro-ph/0304528},
year = {2007}
}
Comments
To appear in the 28th ICRC conference proceedings