Cosmic rays from primordial black holes and constraints on the early universe

The constraints on the number of evaporating primordial black holes imposed by observations of the cosmological gamma-ray background do not exclude their making a significant contribution to the Galactic flux of cosmic ray photons, electrons, positrons and antiprotons. Even if this contribution is s...

Full description

Saved in:
Bibliographic Details
Published inPhysics reports Vol. 307; no. 1; pp. 141 - 154
Main Authors Carr, B.J., MacGibbon, J.H.
Format Journal Article
LanguageEnglish
Published Elsevier B.V 01.12.1998
Subjects
Cosmic rays
Early universe
Primordial black holes
Early universe
Primordial black holes
97.60.Lf
Cosmic rays
98.80.Cq
98.70.Vc
Online AccessGet full text

Cover

More Information
Summary:The constraints on the number of evaporating primordial black holes imposed by observations of the cosmological gamma-ray background do not exclude their making a significant contribution to the Galactic flux of cosmic ray photons, electrons, positrons and antiprotons. Even if this contribution is small, cosmic ray data place important limits on the number of evaporating black holes and thereby on models of the early Universe. Evaporating black holes are unlikely to be detectable in their final explosive phase unless new physics is invoked at the QCD phase transition.
ISSN:0370-1573
1873-6270
DOI:10.1016/S0370-1573(98)00039-8