2005/12/07 by Stefan Westerhoff · 4 citations
Physics and Astronomy · #Astronomy #Astrophysics #Astrophysics and Cosmic Phenomena #COSMIC cancer database #Cosmic ray #Dark Matter and Cosmic Phenomena #Energy spectrum #Gamma-ray bursts and supernovae #Physics #Ultra-high-energy cosmic ray #hep-ex #hep-ph
paper · pdf · doi:10.1142/s0217751x06032897
published in International Journal of Modern Physics A 21(08n09), 1950-1961 (World Scientific) · 12 pages, 4 figures, latex. To appear in the Proceedings of the XXII International Symposium on Lepton-Photon Interactions (Uppsala, Sweden, 2005)
arxiv created 2005/12/07 · openalex publication_date 2006/04/10 · arxiv updated 2009/12/01 · openalex created_date 2020/11/23 · openalex updated_date 2026/05/21
One of the most striking astrophysical phenomena today is the existence of cosmic ray particles with energies in excess of 10 20 eV. While their presence has been confirmed by a number of experiments, it is not clear where and how these particles are accelerated to these energies and how they travel astronomical distances without substantial energy loss. We are entering an exciting new era in cosmic ray physics, with instruments now producing data of unprecedented quality and quantity to tackle the many open questions. This paper reviews the current experimental status of cosmic ray physics and summarizes recent results on the energy spectrum and arrival directions of ultra-high-energy cosmic rays.