Propagation of ultra high energy cosmic rays
arXiv:0810.2501 · doi:10.1088/1367-2630/11/6/065013
Abstract
We briefly describe the energy loss processes of ultrahigh energy protons, heavier nuclei and gamma rays in interactions with the universal photon fields of the Universe. We then discuss the modification of the accelerated cosmic ray energy spectrum in propagation by the energy loss processes and the charged cosmic ray scattering in the extragalactic magnetic fields. The energy lost by the ultrahigh energy cosmic rays goes into gamma rays and neutrinos that carry additional information about the sources of highest energy particles. The new experimental results of the HiRes and the Auger collaborations are discussed in view of the predictions from propagation calculations.
arXiv comment14 pages, 5 figures, to appear in the Focus Issue "High Energy Cosmic Rays" (eds. M. Teshima and A.A. Watson) of New Journal of Physics
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Cited by in corpus (7)
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- Constraints on the Local Sources of Ultra High-Energy Cosmic Rays
- Ultrahigh energy cosmic rays from nearby starburst galaxies
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