Narrow radio recombination lines from ionization fronts

Details Narrow radio recombination lines from ionization fronts Narrow radio recombination lines from ionization fronts

Mar 1977

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1977apj...212..692h&link_type=abstract

Astrophysical Journal, Part 1, vol. 212, Mar. 15, 1977, p. 692-695.

Astronomy and Astrophysics

Astronomy

8

Ionization, Nebulae, Radio Sources (Astronomy), Astronomical Models, H Ii Regions, H Lines, Hydrogen Recombinations, Spectral Line Width

Scientific paper

Model weak D-type ionization fronts are used to show that narrow H I radio recombination lines, such as those observed in the directions of several galactic H II regions, may be formed in the outermost layers of an ionization front bounding an H II region. Four model ionization fronts are computed with different values of magnetic-field strength, ionizing photon energy, and initial conditions. The recombination line strengths given by the models are compared with observed line strengths for the H II region NGC 2024, and the observed line profiles are found to be about twice as broad as the model profiles. Some likely explanations for the discrepancy are considered, particularly a variation in front velocity over the observing beam width (Stark broadening is ruled out).

Affiliated with

Also associated with

No associations

Rating

Narrow radio recombination lines from ionization fronts 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 Narrow radio recombination lines from ionization fronts, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Narrow radio recombination lines from ionization fronts will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1845673