Small-Scale Clustering of Ultrahigh Energy Cosmic Rays at the Pierre Auger Observatory

Details Small-Scale Clustering of Ultrahigh Energy Cosmic Rays at the Pierre Auger Observatory Small-Scale Clustering of Ultrahigh Energy Cosmic Rays at the Pierre Auger Observatory

May 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009aps..apr.h8002p&link_type=abstract

American Physical Society, 2009 APS April Meeting, May 2-5, 2009, abstract #H8.002

Physics

Scientific paper

The Pierre Auger Observatory is a hybrid cosmic ray observatory located in Malargue, Argentina. One of the main goals of the experiment is the search for the sources of cosmic rays with energies above several 10^18 eV. A promising approach to finding the sources is the statistical search for anisotropies in the cosmic ray arrival direction distribution in itself. Compact sources of cosmic rays could for example manifest themselves in a significant amount of event clusters (doublets, triplets,...) on small angular scales. We present results on searches for significant small-scale clustering in the arrival direction distribution of cosmic rays with energies above 4.10^19 eV on angular scales up to 10 . The method, results, and error studies will be discussed.

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