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The intergalactic propagation of ultra-high energy cosmic ray nuclei

Dan Hooper·Subir Sarkar·Andrew M. Taylor
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Abstract

We investigate the propagation of ultra-high energy cosmic ray nuclei (A = 1-56) from cosmologically distant sources through the cosmic radiation backgrounds. Various models for the injected composition and spectrum and of the cosmic infra-red background are studied using updated photo-disintegration cross-sections. The observational data on the spectrum and the composition of ultra-high energy cosmic rays are jointly consistent with a model where all of the injected primary cosmic rays are iron nuclei (or a mixture of heavy and light nuclei).

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Dan Hooper, Subir Sarkar, Andrew M. Taylor. 2006-10-23. The intergalactic propagation of ultra-high energy cosmic ray nuclei. https://doi.org/10.1016/j.astropartphys.2006.10.008

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