369 citations · 2.1k across the 36 of their papers we have counts for
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astro-ph.SR2009★ 28 cited
Interstellar Metastable Helium Absorption as a Probe of the Cosmic-Ray Ionization Rate
Nick Indriolo, L. M. Hobbs, K. H. Hinkle +1
The ionization rate of interstellar material by cosmic rays has been a major source of controversy, with different estimates varying by three orders of magnitude. Observational con…
astro-ph.HE2009★ 108 cited
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…