Ultra-High Energy Cosmic Rays and the GeV-TeV Diffuse Gamma-Ray Flux
classification
🌌 astro-ph
hep-ph
keywords
cosmicfluxcascadesdiffuseenergygev-tevultra-highaccelerated
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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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