Supernovae and Cosmic May Proton Acceleration(Current Topics)
2004 Volume 59 Issue 5 Pages 308-311
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2004 Volume 59 Issue 5 Pages 308-311
Supernova remnants are believed to be major sites of acceleration of Galactic cosmic rays. In particular, it has been a big issue whether supernova remnants are sites of proton acceleration or not. We carried out extensive CO observations covering the whole southern Galactic plane and discovered molecular clouds at a distance of 1 kpc interacting with the TeV gamma-ray SNR G347.3-0.5. A good spatial coincidence between these molecular gas and nonthermal X-ray or TeV-gamma ray distributions indicates a possibility that the interaction of the supernova remnant with the molecular gas is the origin of cosmicray proton acceleration.
