Small scale anisotropies of UHECRs from super-heavy halo dark matter

Details Small scale anisotropies of UHECRs from super-heavy halo dark matter Small scale anisotropies of UHECRs from super-heavy halo dark matter

Oct 2001

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001stin...0216370b&link_type=abstract

Technical Report, DE2001-787842

Other

Anisotropy, Dark Matter, Energy Spectra, Galaxies, Cosmic Rays, Metastable State, Distance, Halos

Scientific paper

The decay of very heavy metastable relics of the Early Universe can produce ultra-high energy cosmic rays (UHECRs) in the halo of our own Galaxy. In this model, no Gresien-Zatsepin-Kuzmin cutoff is expected because of the short propagation distances. We show here that, as a consequence of the hierarchical build up of the halo, this scenario predicts the existence of small scale anisotropies in the arrival directions of UHECRs, in addition to a large scale anisotropy, known from previous studies. We also suggest some other observable consequences of this scenario which will be testable with upcoming experiments, as Auger, EUSO and OWL.

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