Gamma-rays from molecular clouds illuminated by cosmic rays escaping from interacting supernova remnants
Gamma-rays from molecular clouds illuminated by cosmic rays escaping from interacting supernova remnants
Recently, the gamma-ray telescopes AGILE and Fermi observed several middle-aged supernova remnants (SNRs) interacting with molecular clouds. It is likely that their gamma-rays arise from the decay of neutral pions produced by the inelastic collision between cosmic rays (CRs) and nucleons, which suggests that SNRs make the bulk of Galactic …