Ultra High Energy Cosmic Rays: Origin, Composition and Spectrum

Abstract

The physics of Ultra High Energy Cosmic Rays will be reviewed, discussing the latest experimental results and theoretical models aiming at explaining the observations in terms of spectra, mass composition and possible sources. It will be also discussed the emission of secondary particles such as neutrinos and gamma rays produced by the interaction of Ultra High Energy Cosmic Rays with astrophysical photon backgrounds.

6 pages, 6 pdf figures. Invited review talk given at the "7th Roma International Conference on Astroparticle Physics" (RICAP-2018), Roma (Italy), September 4-7 2018. The content of the present proceedings paper is mainly based on the review papers arXiv:1707.08471 and arXiv:1707.06147 written by the author in the last two years

References in corpus (6)

• The spectrum of isotropic diffuse gamma-ray emission between 100 MeV and 820 GeV
• Observation of a Large-scale Anisotropy in the Arrival Directions of Cosmic Rays above $8\times 10^{18}$ eV
• Study of Ultra-High Energy Cosmic Ray Composition Using Telescope Array's Middle Drum Detector and Surface Array in Hybrid Mode
• Super Heavy Dark Matter in light of BICEP2, Planck and Ultra High Energy Cosmic Rays Observations
• Cosmogenic neutrinos and ultra-high energy cosmic ray models
• Ultrahigh Energy Neutrinos at the Pierre Auger Observatory