SMuK 2021 – wissenschaftliches Programm
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EP: Fachverband Extraterrestrische Physik
EP 2: Sun and Heliosphere II
EP 2.3: Vortrag
Montag, 30. August 2021, 17:15–17:30, H7
Global solar coronal magnetic field modelling — •Thomas Wiegelmann1, Thomas Neukirch2, Iulia Chifu3,1, and Dieter Nickeler4 — 1Max-Planck-Institut für Sonnensystemforschung, Göttingen — 2School of Mathematics and Statistics, University of St. Andrews, UK — 3Institute for Astrophysics, University of Göttingen — 4Astronomical Institute, Czech Academy of Sciences, Czech Republic
Computing the solar coronal magnetic field and plasma environment is an important research topic on it’s own right and also important for space missions like Solar Orbiter and Parker Solar Probe to guide the analysis of remote sensing and in-situ instruments. In the inner solar corona plasma forces can be neglected and the field is modelled under the assumption of a vanishing Lorentz-force. Further outwards (above about two solar radii) plasma forces and the solar wind flow has to be considered. Finally in the heliosphere one has to consider that the Sun is rotating and the well known Parker-spiral forms. We have developed codes based on optimization principles to solve nonlinear force-free, magneto-hydro-static and stationary MHD-equilibria.