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Ultrahigh energy cosmic rays and the GeV-TeV diffuse gamma-ray flux

O.E. Kalashev D.V. Semikoz 1 G. Sigl 2
1 APC - THEORIE
APC (UMR_7164) - AstroParticule et Cosmologie, Institut für theoretische Physik
Abstract : Ultra-high energy cosmic ray protons accelerated in astrophysical objects produce secondary electromagnetic cascades during propagation in the cosmic microwave and infrared backgrounds. We show that such cascades can contribute between ~1% and ~50% of the GeV-TeV diffuse photon flux measured by the EGRET experiment. The GLAST satellite should have a good chance to discover this flux.
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http://hal.in2p3.fr/in2p3-00142938
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Submitted on : Monday, April 23, 2007 - 4:19:39 PM
Last modification on : Wednesday, October 21, 2020 - 4:32:14 PM

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O.E. Kalashev, D.V. Semikoz, G. Sigl. Ultrahigh energy cosmic rays and the GeV-TeV diffuse gamma-ray flux. Physical Review D, American Physical Society, 2009, 79, pp.063005. ⟨10.1103/PhysRevD.79.063005⟩. ⟨in2p3-00142938⟩

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