期刊
ASTROPARTICLE PHYSICS
卷 39-40, 期 -, 页码 33-43出版社
ELSEVIER
DOI: 10.1016/j.astropartphys.2011.10.011
关键词
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In this paper we review the extragalactic propagation of ultrahigh energy cosmic-ray (UHECR). We present the different energy loss processes of protons and nuclei, and their expected influence on energy evolution of the UHECR spectrum and composition. We discuss the possible implications of the recent composition analyses provided by the Pierre Auger Observatory. The production of secondary cosmogenic neutrinos and photons and the constraints their observation would imply for the UHECRs origin are also addressed. Finally, we conclude by briefly discussing the relevance of a multi messenger approach for solving the mystery of UHECRs. (C) 2011 Elsevier B.V. All rights reserved.
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