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- Title
γ Rays from the cosmic ray irradiation of local molecular clouds.
- Authors
Issa, M. R.; Wolfendale, A. W.
- Abstract
An analysis is given here of the flux of cosmic γ rays of energy above 100 MeV from the directions of 13 local molecular clouds. We show that only in a few clouds does the cosmic ray intensity need to exceed the value near the Earth to explain the γ-ray fluxes. Possible reasons for the few excesses are considered. Our conclusion is important because some of the enigmatic γ-ray 'sources' are identified; furthermore, γ-ray data can be coupled with knowledge about the distribution of gas in the Galaxy to throw light on the problem 'where do cosmic rays come from?'.
- Publication
Nature, 1981, Vol 292, Issue 5822, p430
- ISSN
0028-0836
- Publication type
Article
- DOI
10.1038/292430a0