Ultra High Energy Cosmic Rays
arXiv:astro-ph/0312563 · doi:10.1142/9789812702999_0004
Abstract
The detection of cosmic rays with energy around and in excess of eV raises many questions that future experiments will help answering to. I address here my view of some of these open issues, as they are now and as they might be affected by future observations.
Invited Review Talk at the workshop "Thinking, Observing and Mining the Universe", Sorrento (Italy), September 22-27, 2003