Ultra High Energy Cosmic Rays: origin and propagation

Details Ultra High Energy Cosmic Rays: origin and propagation Ultra High Energy Cosmic Rays: origin and propagation

2007-11-14

arxiv.org/abs/0711.2282v1

Astronomy and Astrophysics

Astrophysics

LaTeX, 15 pages, 13 postscript figures, Invited talk at the 30th International Conference of Cosmic Rays, July 2007, Merida, M

Scientific paper

We discuss the basic difficulties in understanding the origin of the highest energy particles in the Universe - the ultrahigh energy cosmic rays (UHECR). It is difficult to imagine the sources they are accelerated in. Because of the strong attenuation of UHECR on their propagation from the sources to us these sources should be at cosmologically short distance from us but are currently not identified. We also give information of the most recent experimental results including the ones reported at this conference and compare them to models of the UHECR origin.

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