Ultra High Energy Cosmic Rays and the Highest Energies Universe. (arXiv:1905.08250v1 [astro-ph.HE])
<a href="http://arxiv.org/find/astro-ph/1/au:+Aloisio_R/0/1/0/all/0/1">Roberto Aloisio</a>

We will discuss the main relevant aspects of the physics of ultra high energy
cosmic rays. After a short recap of the experimental evidences, we will review
theoretical models aiming at describing the sources of these extremely
energetic particles opening a window on the highest energies universe. We will
discuss the production of secondary particles and the possible tests of new
physics that ultra high energy cosmic rays could provide.

We will discuss the main relevant aspects of the physics of ultra high energy
cosmic rays. After a short recap of the experimental evidences, we will review
theoretical models aiming at describing the sources of these extremely
energetic particles opening a window on the highest energies universe. We will
discuss the production of secondary particles and the possible tests of new
physics that ultra high energy cosmic rays could provide.

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