Bremen 2017 – wissenschaftliches Programm
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EP: Fachverband Extraterrestrische Physik
EP 4: Sonne und Heliosphäre I
EP 4.4: Vortrag
Dienstag, 14. März 2017, 15:00–15:15, GW2 B2880
Coronal active region modelling based on SDO data — •Stephan Barra — MPI für Sonnensystemforschung — Ruhr-Universität Bochum, TP IV
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. Many models have been introduced to describe the corona and its behavior. Especially coronal loops, individual hoses of magnetically confined plasma, have been subject to research. Multispectral imagers like NASA’s SDO/AIA, in principle, allow for thermal analysis of such loops. The magnetic field in the corona can be obtained by extrapolating magnetic field measured on the solar surface. We describe an iterative method which deploys both observations from a multispectral imager and magnetic field extrapolations to model density and temperature along the field lines. This could help getting a deeper insight into the processes occurring in the solar corona since the 3D configuration of the physical parameters of the plasma could be tracked.