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HO maser pumping: The effect of quasi-resonance energy transfer in collisions between H and HO molecules.
- Source :
- Astronomy Letters; Jul2014, Vol. 40 Issue 7, p425-434, 10p
- Publication Year :
- 2014
-
Abstract
- The effect of quasi-resonance energy transfer in collisions between H and HO molecules in HO maser sources is investigated. New data on the state-to-state rate coefficients for collisional transitions for HO and H molecules are used in the calculations. The results of ortho-HO level population inversion calculations for the 22.2-, 380-, 439-, and 621-GHz transitions are presented. The ortho-HO level population inversion is shown to depend significantly on the population distribution of the para-H J = 0 and 2 rotational levels. The possibility of quasi-resonance energy transfer in collisions between H molecules at highly excited rotational-vibrational levels and HO molecules is considered. The quasi-resonance energy transfer effect can play a significant role in pumping HO masers in the central regions of active galactic nuclei and in star-forming regions. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 10637737
- Volume :
- 40
- Issue :
- 7
- Database :
- Complementary Index
- Journal :
- Astronomy Letters
- Publication Type :
- Academic Journal
- Accession number :
- 97029246
- Full Text :
- https://doi.org/10.1134/S1063773714070068