2005/06/17 by Daniel De Marco, De Marco, Daniel
Physics and Astronomy · #Astrophysics and Cosmic Phenomena #Particle Detector Development and Performance #Particle physics theoretical and experimental studies #astro-ph
paper · pdf · doi:10.48550/arxiv.astro-ph/0506412
to appear in the Proceedings of "Rencontres de Moriond: Very High Energy Phenomena in the Universe" La Thuile, Italy (March 12-19, 2005)
arxiv created 2005/06/21 · arxiv updated 2009/12/01
In this general introduction to Ultra High Energy Cosmic Rays (UHECRs) we discuss the propagation of UHE protons and the GZK feature that is expected approaching 1020\eV for homogeneously distributed sources. We also briefly present the effects of the propagation on other particles that can play the role of UHECRs. With the help of numerical simulations for the propgation of UHECRs, we show that the GZK feature cannot be accurately determined with the small sample of events with energies ∼1020\eV detected thus far by the largest two experiments, AGASA and HiRes.