Physics
Scientific paper
Dec 2002
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002esasp.506..405g&link_type=abstract
In: Solar variability: from core to outer frontiers. The 10th European Solar Physics Meeting, 9 - 14 September 2002, Prague, Cze
Physics
Solar Prominences: Transition Region
Scientific paper
SOHO/SUMER observations of solar filaments in Lyman lines of hydrogen have revealed, in general, a two-peak form of the emission line profiles with peak to center ratio less than an order of magnitude. This fact strongly contradicts the results of numerical radiative transfer simulations, where profiles with strong dips and large (1.5-2 orders of magnitude) peak to center ratio are usually obtained due to the absence of incident radiation from above the filament and, as a consequence, very low atomic populations on the upper energy levels at the top of the filament. Recently it was shown (Schmieder et al. 1998) that this discrepancy can be removed by introducing a prominence-corona transition region (PCTR) to the radiative transfer models. This paper continues a set of publications (Anzer & Heinzel, 1999 and Heinzel & Anzer, 2001) devoted to the modelling of prominences as structures in MHS equilibrium. Here the prominence is represented by a horizontal 2D slab supported by a magnetic field. In our model we use a constant gas pressure and assume that the kinetic temperature profile and the PCTR extension are different in the vertical and horizontal directions due to magnetic field. In the PCTR the temperature sharply increases outwards from 8000K to 50000K on the scale of 100-600 km. To solve the radiative transfer problem we apply a 2D code based on the MALI iteration scheme and the modified long characteristics method.
Anzer Ulrich
Gorshkov Alexey B.
Heinzel Petr
No associations
LandOfFree
A prominence with transition region: horizontal two-dimensional filament model 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 A prominence with transition region: horizontal two-dimensional filament model, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and A prominence with transition region: horizontal two-dimensional filament model will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-963841