Propagation of UHECRs

Details Propagation of UHECRs Propagation of UHECRs

2005-06-17

arxiv.org/abs/astro-ph/0506412v2

Astronomy and Astrophysics

Astrophysics

to appear in the Proceedings of "Rencontres de Moriond: Very High Energy Phenomena in the Universe" La Thuile, Italy (March 12

Scientific paper

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 $10^{20}\eV$ 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 $\sim10^{20}\eV$ detected thus far by the largest two experiments, AGASA and HiRes.

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