Physics
Scientific paper
Dec 1991
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991soph..136..317m&link_type=abstract
Solar Physics (ISSN 0038-0938), vol. 136, Dec. 1991, p. 317-333.
Physics
30
Dynamic Models, Fine Structure, H Alpha Line, Solar Prominences, Spectral Line Width, Doppler Effect, Line Shape, Radiative Transfer, Solar Observatories
Scientific paper
Doppler shifts and line widths of the H-alpha line of a full prominence are investigated under the assumption that the prominence consists of several isothermal 'threads' with different velocities producing a broadened composite profile. The observations are compared with numerical simulations, the processing of which is very close to the processing of observations. The mixing by seeing effects and the transfer of radiation across several threads along the line of sight are considered. The best fits are obtained when the temperature is about 8500 K. In the middle range of intensities, each pixel results typically from the mixing of six velocity threads, the optical thickness of which is roughly 0.2 at H-alpha center, and the geometrical thickness greater than 1000 km. In the central parts of the prominence, the fit is obtained by assuming that the line-of-sight velocities of the threads have a gaussian probability function. In the edges, a scatter of velocities and two combined dispersions are suggested.
Mein Nicole
Mein Pierre
No associations
LandOfFree
Dynamical fine structure of a quiescent prominence 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 Dynamical fine structure of a quiescent prominence, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Dynamical fine structure of a quiescent prominence will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1542763