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Conference papers

Ultra high energy cosmic ray horizons

N.G. Busca 1
1 APC - AHE - APC - Astrophysique des Hautes Energies
APC (UMR_7164) - AstroParticule et Cosmologie, Dipartimento di Astronomia, Universita degli Studi di Bologna
Abstract : We calculate the horizons of ultra high energy cosmic rays assuming different nuclei primaries ranging from proton to iron at ultra high energies (>6\cdot10^{19}). We show that sources of ultra high energy protons and heavy nuclei can originate from distances up to ˜ 180 Mpc, while low and intermediate mass nuclei can only originate in the local universe (< 50 Mpc.)
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Submitted on : Friday, March 13, 2009 - 12:11:47 PM
Last modification on : Friday, October 30, 2020 - 12:04:02 PM



N.G. Busca. Ultra high energy cosmic ray horizons. Semaine de l'Astrophysique Française - Journées de la SF2A 2008, Jul 2008, Paris, France. pp.183. ⟨in2p3-00368032⟩



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