Gamma ray signatures of ultra high energy cosmic ray accelerators

Details Gamma ray signatures of ultra high energy cosmic ray accelerators Gamma ray signatures of ultra high energy cosmic ray accelerators

Jun 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006an....327..619g&link_type=abstract

Astronomische Nachrichten, Vol.327, Issue 5/6, p.619

Astronomy and Astrophysics

Astronomy

Cosmic Rays, Magnetic Fields, Radiation Mechanism: Non-Thermal

Scientific paper

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.

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