Astronomy and Astrophysics – Astronomy
Scientific paper
Jun 2004
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004apj...608.1133l&link_type=abstract
The Astrophysical Journal, Volume 608, Issue 2, pp. 1133-1147.
Astronomy and Astrophysics
Astronomy
19
Plasmas, Sun: Corona, Sun: Magnetic Fields
Scientific paper
In the present work SOHO Coronal Diagnostic Spectrometer (CDS) observations of a quiescent active region loop are compared to a steady state, dynamic loop model. Three different heating functions are adopted: uniform, concentrated at the top, and concentrated at the footpoints. Predicted temperature and density profiles of the selected loop are compared with those obtained from CDS observations using line ratios and an emission measure analysis. The latter method also allows us to measure the loop filling factor. The space of parameters of the model is investigated in an effort to achieve agreement with observations. The effects of uncertainties and of CDS instrumental limitations on the results are assessed. We find that no agreement can be found between model predictions and observations. Possible causes of the disagreement and areas of further investigation are discussed. This work also demonstrates the potential of high-resolution spectroscopy in loop studies, even in the presence of moderate spatial resolution.
Landi Enrico
Landini Massimo
No associations
LandOfFree
Models for Solar Magnetic Loops. III. Dynamic Models and Coronal Diagnostic Spectrometer Observations 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 Models for Solar Magnetic Loops. III. Dynamic Models and Coronal Diagnostic Spectrometer Observations, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Models for Solar Magnetic Loops. III. Dynamic Models and Coronal Diagnostic Spectrometer Observations will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-890801