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Full-Text Articles in Physics
On The Enhanced Cosmic-Ray Ionization Rate In The Diffuse Cloud Toward Ζ Persei, Gargi Shaw, Gary J. Ferland, R. Srianand, N. P. Abel, P. A. M. Van Hoof, P. C. Stancil
On The Enhanced Cosmic-Ray Ionization Rate In The Diffuse Cloud Toward Ζ Persei, Gargi Shaw, Gary J. Ferland, R. Srianand, N. P. Abel, P. A. M. Van Hoof, P. C. Stancil
Physics and Astronomy Faculty Publications
The spatial distribution of the cosmic-ray flux is important in understanding the interstellar medium (ISM) of the Galaxy. This distribution can be analyzed by studying different molecular species along different sight lines whose abundances are sensitive to the cosmic-ray ionization rate. Recently several groups have reported an enhanced cosmic-ray ionization rate (ζ=χCRζstandard) in diffuse clouds compared to the standard value, ζstandard (=2.5×10-17 s-1), measured toward dense molecular clouds. In an earlier work we reported an enhancement χCR=20 toward HD 185418. McCall et al. have reported χCR=48 toward ζ …