Collisional pumping of OH masers in the 2Pi(1/2) ladder

Details Collisional pumping of OH masers in the 2Pi(1/2) ladder Collisional pumping of OH masers in the 2Pi(1/2) ladder

Feb 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990apj...350..209k&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 350, Feb. 10, 1990, p. 209-215. Research supported by the American Astronom

Astronomy and Astrophysics

Astrophysics

14

Collision Rates, Emission Spectra, Hydrogen, Hydroxyl Radicals, Interstellar Masers, Astronomical Models, Brightness Temperature

Scientific paper

The collisional pumping of OH masers in star-forming regions has been studied, and the first detailed calculations of such pumping since collision rates with the correct parities have become available are reported. It is found that collisions of OH with H2 pump not only the J = 1/2 Lambda-doublet but also the J = 3/2 and J = 5/2 Lambda-doublets of 2Pi(1/2). Using parameters inferred by VLBI for W3(OH), it is found that collisional pumping can easily explain the observed brightness temperatures and luminosities of the J = 1/2 Lambda-doublet masers. Furthermore, what the brightness temperature and luminosity should be for the J = 3/2 and J = 5/2 Lambda-doublets in the same region is predicted.

Affiliated with

Also associated with

No associations

Rating

Collisional pumping of OH masers in the 2Pi(1/2) ladder does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Collisional pumping of OH masers in the 2Pi(1/2) ladder, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Collisional pumping of OH masers in the 2Pi(1/2) ladder will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1841434