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Gamma ray signatures of ultra high energy cosmic ray accelerators

✍ Scribed by S. Gabici; F. A. Aharonian

Publisher
John Wiley and Sons
Year
2006
Tongue
English
Weight
114 KB
Volume
327
Category
Article
ISSN
0004-6337

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✦ Synopsis

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. If the accelerator is embedded in a magnetized region, these electrons will emit high energy synchrotron radiation. The resulting synchrotron source is expected to be point‐like, steady and detectable in the GeV‐TeV energy range if the magnetic field is at the nanoGauss level. (Β© 2006 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)

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