The generation of low-energy cosmic rays in molecular clouds

Details The generation of low-energy cosmic rays in molecular clouds The generation of low-energy cosmic rays in molecular clouds

2005-03-24

arxiv.org/abs/astro-ph/0503528v1

Astron.Rep. 49 (2005) 269-273

Astronomy and Astrophysics

Astrophysics

11 pages, no figures

Scientific paper

10.1134/1.1898404

It is argued that if cosmic rays penetrate into molecular clouds, the total energy they lose can exceed the energy from galactic supernovae shocks. It is shown that most likely galactic cosmic rays interacting with the surface layers of molecular clouds are efficiently reflected and do not penetrate into the cloud interior. Low-energy cosmic rays ($E<1$ GeV) that provide the primary ionization of the molecular cloud gas can be generated inside such clouds by multiple shocks arising due to supersonic turbulence.

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