activity
20172026
most citedDiffusive Versus Free-Streaming Cosmic Ray Transport in Molecular Clouds

44 citations · 194 across the 15 of their papers we have counts for

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Showing astro-ph.GAShow all

13 papers · 1 filter

astro-ph.GA2026

Map of the Interstellar Continuum FUV Field within 800 Parsecs

David Lomeli, Kedron Silsbee, Alexei Ivlev +1

The far-ultraviolet (FUV) field, consisting of photons with energies between 6 and 13.6 electron volts, plays an important role in the chemical and thermodynamical evolution of the…

astro-ph.GA2026

The cosmic ray ionization rate from H3+ observations can be overestimated due to neglect of time-dependent chemistry

Ka Wai Ho, Munan Gong, Kedron Silsbee +1

The cosmic ray ionization rate (CRIR) is a key parameter governing the physical, chemical and thermal evolution of the interstellar medium. The primary technique for measuring the…

astro-ph.GA20251 cited

JWST observations of cosmic-ray-excited H in Barnard 68: spatial variations and constraints on cosmic-ray attenuation

David A. Neufeld, Kedron Silsbee, Alexei V. Ivlev +9

We present James Webb Space Telescope (JWST) NIRSpec observations of the starless dark cloud Barnard 68 that reveal the spatially-resolved signature of cosmic-ray excited molecular…

astro-ph.GA20256 cited

Mapping the Cosmic-Ray Ionization Rate in the Local Galaxy with H

Nick Indriolo, Alexei V. Ivlev, T. Pellegrin +6

Chemistry in diffuse molecular clouds relies primarily on rapid ion-molecule reactions. Formation of the initial ions, H and H, is dominated by cosmic-ray ionization of H…

astro-ph.GA20256 cited

The first detection of cosmic-ray excited H in interstellar space

Shmuel Bialy, Amit Chemke, David A. Neufeld +12

Stars and planets form within cold, dark molecular clouds. In these dense regions, where starlight cannot penetrate, cosmic rays (CRs) are the dominant source of ionization -- driv…

astro-ph.GA2025

The Effect of Weak Cosmic Ray Heating Events on the Desorption of

O. Sipilä, K. Silsbee, N. Carbajal +2

The typical amount of molecular hydrogen () in interstellar ices is not known, but significant freeze-out of on dust grains is not expected. However, chemica…