The footprint of large scale cosmic structure on the ultra-high energy cosmic ray distribution

Details The footprint of large scale cosmic structure on the ultra-high energy cosmic ray distribution The footprint of large scale cosmic structure on the ultra-high energy cosmic ray distribution

2005-10-27

arxiv.org/abs/astro-ph/0510765v2

JCAP 0601:009,2006

Astronomy and Astrophysics

Astrophysics

21 pages, 14 figures. Reference added, minor changes, matches published version

Scientific paper

10.1088/1475-7516/2006/01/009

Current experiments collecting high statistics in ultra-high energy cosmic rays (UHECRs) are opening a new window on the universe. In this work we discuss a large scale structure model for the UHECR origin which evaluates the expected anisotropy in the UHECR arrival distribution starting from a given astronomical catalogue of the local universe. The model takes into account the main selection effects in the catalogue and the UHECR propagation effects. By applying this method to the IRAS PSCz catalogue, we derive the minimum statistics needed to significatively reject the hypothesis that UHECRs trace the baryonic distribution in the universe, in particular providing a forecast for the Auger experiment.

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