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Absorption Line Observations of H and CO in Sight Lines Toward the Vela and W28 Supernova Remnants
Nick Indriolo
Supernova remnants act as particle accelerators, providing the cosmic-ray protons that permeate the interstellar medium and initiate the ion-molecule reactions that drive interstel…
The Central 300 pc of the Galaxy probed by infrared spectra of H and CO: part I. Predominance of warm and diffuse gas and high H ionization rate
Takeshi Oka, T. R. Geballe, Miwa Goto +4
The molecular gas in the Central Molecular Zone (CMZ) of the Galaxy has been studied using infrared absorption spectra of H lines at 3.5-4.0 m and CO lines near 2.34 m.…
Investigating the Cosmic-Ray Ionization Rate Near the Supernova Remnant IC 443 Through H3+ Observations
Nick Indriolo, Geoffrey A. Blake, Miwa Goto +5
Observational and theoretical evidence suggests that high-energy Galactic cosmic rays are primarily accelerated by supernova remnants. If also true for low-energy cosmic rays, the…
The Implications of a High Cosmic-Ray Ionization Rate in Diffuse Interstellar Clouds
Nick Indriolo, Brian D. Fields, Benjamin J. McCall
Diffuse interstellar clouds show large abundances of H_3^+ which can be maintained only by a high ionization rate of H_2. Cosmic rays are the dominant ionization mechanism in this…