Evidence for a Galactic Origin of Very Short Gamma Ray Bursts and Primordial Black Hole Sources

Details Evidence for a Galactic Origin of Very Short Gamma Ray Bursts and Primordial Black Hole Sources Evidence for a Galactic Origin of Very Short Gamma Ray Bursts and Primordial Black Hole Sources

2001-10-11

arxiv.org/abs/astro-ph/0110276v2

Astropart.Phys. 18 (2003) 531-538

Astronomy and Astrophysics

Astrophysics

10 pages, 4 figures

Scientific paper

10.1016/S0927-6505(02)00219-0

We systematically study the shortest time duration gamma ray bursts and find unique features that are best interpreted as sources of a galactic origin. There is a significant angular asymmetry and the V/Vmax distribution provides evidence for a homogenous or Euclidean source distribution. We eview the arguments that primordial black hole evaporation can give such GRBs. The rate of events is consistent with a PBH origin if we assume on enhanced local density, as are the other distributions. We suggest further tests of this hypothesis.

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