UHECR Anisotropy and the Galactic Halo

Details UHECR Anisotropy and the Galactic Halo UHECR Anisotropy and the Galactic Halo

1999-05-19

arxiv.org/abs/astro-ph/9905240v1

Astronomy and Astrophysics

Astrophysics

To be published in the proc. of the 26th ICRC (Utah, 1999) - OG 3.1.17 - HTML: 4 pages + 3 figures

Scientific paper

Several explanations for the existence of Ultra High Energy Cosmic Rays (UHECR) invoke the idea that they originate from the decay of massive particles created in the reheating following inflation. It has been suggested that the decay products can explain the observed isotropic flux of UHECR. We have calculated the anisotropy expected for various models of the dark matter distribution and find that present data are too sparse above 4 x 10^19 eV to discriminate between different models. However, after three years of operation of the southern part of the Pierre Auger Observatory great progress in testing the proposals is expected.

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