Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1771546 | Astroparticle Physics | 2007 | 14 Pages |
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 infrared background are studied using updated photodisintegration 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).
Related Topics
Physical Sciences and Engineering
Physics and Astronomy
Astronomy and Astrophysics
Authors
Dan Hooper, Subir Sarkar, Andrew M. Taylor,