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On the ultra-high energy cosmic ray horizon

D. Harari, S. Mollerach, E. Roulet

astro-pharXiv:astro-ph/0609294

Abstract

We compute the ultra-high energy cosmic ray horizon, i.e. the distance up to which cosmic ray sources may significantly contribute to the fluxes above a certain threshold on the observed energies. We obtain results both for proton and heavy nuclei sources.

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