scholarly journals Grain-surface reactions in molecular clouds: the effect of cosmic rays and quantum tunnelling

2014 ◽  
Vol 440 (4) ◽  
pp. 3557-3567 ◽  
Author(s):  
L. Reboussin ◽  
V. Wakelam ◽  
S. Guilloteau ◽  
F. Hersant
Keyword(s):  
Cosmic Rays ◽  
Molecular Clouds ◽  
Surface Reactions ◽  
Quantum Tunnelling ◽  
Grain Surface

scholarly journals Surface Reactions in Interstellar Space

2002 ◽  
Vol 12 ◽  
pp. 55-57 ◽  
Author(s):  
Eric Herbst
Keyword(s):  
Surface Chemistry ◽  
Gas Phase ◽  
Condensed Phase ◽  
Current Knowledge ◽  
Surface Reactions ◽  
Future Research ◽  
Interstellar Space ◽  
Interstellar Molecules ◽  
Grain Surface

AbstractIt is impossible to explain the abundances of some gas-phase and most condensed-phase interstellar molecules without the use of grain chemistry. Nevertheless, grain-surface chemistry is relatively poorly understood for a variety of reasons. Our current knowledge of this chemistry and its use in interstellar models is discussed along with specific needs for future research.

scholarly journals HIGH-LATITUDE, TRANSLUSCENT MOLECULAR CLOUDS AS PROBES OF LOCAL COSMIC RAYS

2015 ◽  
Vol 805 (1) ◽  
pp. 50 ◽  
Author(s):  
Ryan D. Abrahams ◽  
Timothy A. D. Paglione
Keyword(s):  
Cosmic Rays ◽  
High Latitude ◽  
Molecular Clouds

scholarly journals Non-thermal radiation from molecular clouds illuminated by cosmic rays from nearby supernova remnants.

2008 ◽  
Author(s):  
Stefano Gabici ◽  
Sabrina Casanova ◽  
Felix A. Aharonian ◽  
Felix A. Aharonian ◽  
Werner Hofmann ◽  
...  
Keyword(s):  
Cosmic Rays ◽  
Thermal Radiation ◽  
Molecular Clouds ◽  
Supernova Remnants

On the contribution of grain surface reactions to interstellar molecule densities

1976 ◽  
Vol 44 (2) ◽  
pp. 385-388 ◽  
Author(s):  
M. A. Leitch-Devlin ◽  
T. J. Millar ◽  
J. Pickles ◽  
D. A. Williams
Keyword(s):  
Surface Reactions ◽  
Interstellar Molecule ◽  
Grain Surface

Confinement of cosmic rays in molecular clouds

1982 ◽  
Vol 259 ◽  
pp. 859 ◽  
Author(s):  
E. G. Zweibel ◽  
J. M. Shull
Keyword(s):  
Cosmic Rays ◽  
Molecular Clouds

scholarly journals Gamma Rays from Cosmic Rays

1981 ◽  
Vol 94 ◽  
pp. 309-319 ◽  
Author(s):  
A. W. Wolfendale
Keyword(s):  
Cosmic Rays ◽  
Gamma Rays ◽  
Molecular Clouds ◽  
Cosmic Ray ◽  
Cosmic Ray Intensity ◽  
Cosmic Ray Interactions ◽  
The Galaxy ◽  
Γ Rays ◽  
Γ Ray

It is shown that there is evidence favouring molecular clouds being sources of γ-rays, the fluxes being consistent with expectation for ambient cosmic rays interacting with the gas in the clouds for the clouds considered. An estimate is made of the fraction of the apparently diffuse γ-ray flux which comes from cosmic ray interactions in the I.S.M. as distinct from unresolved discrete sources. Finally, an examination is made of the possibility of gradients of cosmic ray intensity in the Galaxy.

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