Ultra High Energy Cosmic Rays: A Short Review
arXiv:1211.2004
Abstract
We will review the main physical aspects of Ultra High Energy Cosmic Rays. We will discuss in particular their propagation through astrophysical backgrounds, focusing on the latest experimental observations of HiRes, Telescope Array and Auger. We will also review the issue of the transition between galactic and extra-galactic cosmic rays.
7 pages, 11 pdf figures, invited review talk given at the 9th Workshop on Science with the New Generation of High Energy Gamma-ray Experiments, 20-22 June 2012, Lecce (Italy)