GZK photons as UHECR above 1019eV

2005/12/20 by Graciela B. Gelmini, Graciela B Gelmini
Physics and Astronomy · #Astrophysics and Cosmic Phenomena #Background radiation #Nucleon #Particle physics theoretical and experimental studies #Photon #Quantum Chromodynamics and Particle Interactions #Range (aeronautics) #Spectrum (functional analysis) #hep-ph

paper · pdf · doi:10.1088/1742-6596/39/1/108

published as J.Phys.Conf.Ser. 39 (2006) 419-421 · Talk given at TAUP2005, Sept. 10-14 2005, Zaragoza (Spain); 3 pages, 2 figures

arxiv created 2005/12/20 · openalex publication_date 2006/05/01 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05

Abstract

''GZK photons'' are produced by extragalactic nucleons through the resonant photoproduction of pions. We present the expected range of the GZK photon fraction of UHECR, assuming a particular UHECR spectrum and primary nucleons, and compare it with the minimal photon fraction predicted by Top-Down models.

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