Astronomy and Astrophysics – Astrophysics
Scientific paper
Sep 2000
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2000a%26a...361.1169h&link_type=abstract
Astronomy and Astrophysics, v.361, p.1169-1177 (2000)
Astronomy and Astrophysics
Astrophysics
2
Masers, Radiative Transfer, Stars: Individual: Mwc 349, Stars: Circumstellar Matter, Ism: H Ii Regions
Scientific paper
Using a simple on-the-spot approximation, we explore the parameter range in the (log(R),log(ne) plane for which maser action in atomic hydrogen is present and briefly discuss how the borderlines of this region of strong population inversion arise. In particular we address the influence of radiative transfer on the population structure. We find that in normal HII regions no strong maser activity occurs, while for ultra compact HII regions in a certain parameter range strong hydrogen masers should be found. Our fit to the available observational data for MWC 349 leads to a density estimate that is compatible with previous work (Thum & Greve \cite{Thu97}). Furthermore, we derive for the first time a reasonable representation of the variation of the flux ratio of Hnβ and Hnα lines measured towards MWC 349.
Hengel Chistian
Kegel Wilhelm H.
No associations
LandOfFree
Radiative transfer effects in hydrogen recombination masers 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 Radiative transfer effects in hydrogen recombination masers, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Radiative transfer effects in hydrogen recombination masers will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1522117