Sources of Cosmic Rays and Galactic Diffuse Gamma Radiation

Abstract

The diffuse galactic gamma-ray spectrum measured by the EGRET experiment Hunter:1997 are interpreted within a scenario in which cosmic rays (CRs) are injected by three different kind of sources, (i) supernovae (SN) which explode into the interstellar medium (ISM), (ii) Red Supergiants (RSG), and (iii) Wolf-Rayet stars (WR), where the two latter explode into their pre-SN winds (Biermann et al. 2001; Sina et al. 2001).

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