Gamma ray signatures of ultra high energ
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S. Gabici; F. A. Aharonian
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Article
📅
2006
🏛
John Wiley and Sons
🌐
English
⚖ 114 KB
## Abstract We discuss the possibility of observing distant accelerators of ultra high energy cosmic rays in synchrotron gamma rays. Protons propagating away from their acceleration sites produce extremely energetic electrons during photo‐pion interactions with cosmic microwave background photons.