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Signatures of ultra-high energy cosmic ray composition from propagation of nuclei in intergalactic photon fields

2003/09/11 by Tokonatsu Yamamoto, Keiichi Mase, K. Mase +6 · 28 citations
Physics and Astronomy · #Astronomy #Astrophysics #Astrophysics and Cosmic Phenomena #Cosmic ray #Dark Matter and Cosmic Phenomena #Field (mathematics) #Galaxy #Intergalactic travel #Monte Carlo method #Neutrino Physics Research #Optics #Photon #Physics #Redshift #Ultra-high-energy cosmic ray #astro-ph

paper · pdf · doi:10.1016/j.astropartphys.2003.08.001

published in Astroparticle Physics 20(4), 405-412 (Elsevier BV) · 15 pages, 6 figures, accepted for publication in Astroparticle Physics

openalex publication_date 2003/09/11 · arxiv created 2003/12/10 · arxiv updated 2011/05/12 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05

Abstract

We present a calculation of nuclei propagation with energies above 1 EeV in the intergalactic photon field. The calculation is based on a Monte Carlo approach for the nucleus-photon interaction as well as the intergalactic magnetic field. We then assume that the Ultra-High Energy Cosmic Rays are nuclei which are emitted from extra-galactic point sources. Four bumps are found in the energy spectrum of the UHECR which form clusters in the distribution of their arrival directions. Based on this calculation, the energy distribution of the clustered events is discussed.

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