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The Intergalactic Propagation of Ultrahigh Energy Cosmic Ray Nuclei

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Taylor,  Andrew
Division Prof. Dr. Werner Hofmann, MPI for Nuclear Physics, Max Planck Society;

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Citation

Taylor, A. (2007). The Intergalactic Propagation of Ultrahigh Energy Cosmic Ray Nuclei. Talk presented at The IOP Nuclear and Particle Physics Divisional Conference. Surrey, UK. 2007-04-03 - 2007-04-05.


Cite as: https://hdl.handle.net/11858/00-001M-0000-0011-7D82-F
Abstract
The propagation of ultra-high energy cosmic ray nuclei (A = 1-56) from cosmologically distant sources through the cosmic radiation backgrounds is investigated. 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).