Wuppertal 2015 – wissenschaftliches Programm
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EP: Fachverband Extraterrestrische Physik
EP 5: SDO/Sunrise/STEREO
EP 5.3: Vortrag
Dienstag, 10. März 2015, 17:45–18:00, G.10.02 (HS 9)
Coronal Active Region Modeling based on SDO Data — •Stephan Barra1,2, Thomas Wiegelmann1, and Horst Fichtner2 — 1MPI für Sonnensystemforschung, Göttingen — 2Ruhr-Universität Bochum
The heating of the solar corona, which has a temperature of order of 106 K compared to 5000K in the photosphere, is yet a puzzling problem. Several models to describe the physical parameters, e.g. temperature or density, along coronal loops with different assumptions for the relevant physical processes (like wave damping) were suggested in the past, for example the RTV78 model by Rosner, Tucker and Vaiana. With these models and the knowledge of the 3D configuration of the magnetic field above an active region it is possible to calculate the radiation emitted by the coronal loops above this region. This 3D field configuration can be provided by different ways of modeling using SDO/HMI vector magnetograms as boundary conditions. We use different fields models and loop models to compute the coronal plasma along these loops, obtaining synthesized images in different wavelength. The images can be compared to observational data from the multispectral imager SDO/AIA. Such comparisons allow us to evaluate the quality of our model approach.