On the Cosmic Ray-Induced Ionization Rate in Molecular Clouds
Author
Source
ISRN Astronomy and Astrophysics
Issue
Vol. 2011, Issue 2011 (31 Dec. 2011), pp.1-10, 10 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2011-04-27
Country of Publication
Egypt
No. of Pages
10
Main Subjects
Abstract EN
The transformation of the energy dependence of the cosmic ray proton flux in the keV to GeV region is investigated theoretically when penetrating inside molecular clouds (Av>5 mag).
The computations suggest that energy losses of the cosmic ray particles by interaction with the matter of the molecular cloud are principally caused by the inelastic (electronic) interaction potential; the transformed energy distribution of energetic protons is determined mainly by the column density of the absorbing medium.
A cutoff of the cosmic ray spectrum inside clouds by their magnetic fields is also phenomenologically taken into account.
This procedure allows a determination of environment-dependent ionization rates of molecular clouds.
The theoretically predicted ionization rates are in good agreement with those derived from astronomical observations of H3+ absorption lines in the spectrum of the cloud connected with the Herbig Be star LkHα 101.
American Psychological Association (APA)
Yeghikyan, Ararat G.. 2011. On the Cosmic Ray-Induced Ionization Rate in Molecular Clouds. ISRN Astronomy and Astrophysics،Vol. 2011, no. 2011, pp.1-10.
https://search.emarefa.net/detail/BIM-506883
Modern Language Association (MLA)
Yeghikyan, Ararat G.. On the Cosmic Ray-Induced Ionization Rate in Molecular Clouds. ISRN Astronomy and Astrophysics No. 2011 (2011), pp.1-10.
https://search.emarefa.net/detail/BIM-506883
American Medical Association (AMA)
Yeghikyan, Ararat G.. On the Cosmic Ray-Induced Ionization Rate in Molecular Clouds. ISRN Astronomy and Astrophysics. 2011. Vol. 2011, no. 2011, pp.1-10.
https://search.emarefa.net/detail/BIM-506883
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-506883