Tracing the sources of cosmic rays with molecular ions

Abstract

The rate of ionization by cosmic rays in interstellar gas directly associated with gamma-ray emitting supernova remnants is for the first time calculated to be several orders of magnitude larger than the Galactic average. Analysis of ionization-induced chemistry yields the first quantitative prediction of the astrophysical H_{2}^{+} emission line spectrum, which should be detectable together with H_3^+ lines. The predicted coincident observation of those emission lines and gamma-rays will help prove that supernova remnants are sources of cosmic rays.

11 pages, 2 figures

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Cited by in corpus (17)

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• Cosmic-ray-induced ionization in molecular clouds adjacent to supernova remnants - Tracing the hadronic origin of GeV gamma radiation
• Prediction of the diffuse neutrino flux from cosmic ray interactions near Supernova Remnants
• Presence of water on exomoons orbiting free-floating planets: a case study
• Spectrum and ionization rate of low energy Galactic cosmic rays
• Gamma-ray emitting supernova remnants as the origin of Galactic cosmic rays?
• Theoretical study of ionization profiles of molecular clouds near supernova remnants: Tracing the hadronic origin of GeV gamma radiation
• Positron annihilation as a cosmic-ray probe
• Galactic Propagation of Cosmic Rays from Individual Supernova Remnants
• A statistical classification of the unassociated gamma-ray sources in the second Fermi Large Area Telescope Catalog
• Ionisation as indicator for cosmic ray acceleration
• Cosmic-ray-induced ionization in molecular clouds adjacent to supernova remnants
• Chemical evolution of cold dark clouds in the vicinity of supernova remnants
• A multifrequency view of starburst galaxies