Bonn 2020 – scientific programme

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EP: Fachverband Extraterrestrische Physik

EP 2: Sun and Heliosphere I

EP 2.3: Talk

Tuesday, March 31, 2020, 11:45–12:00, H-HS VIII

Magnetohydrostatic modelling of the solar atmosphere: Numerical solutions — •Xiaoshuai Zhu and Thomas Wiegelmann — Max-Planck-Institut für Sonnensystemforschung, Justus-von-Liebig-Weg 3, 37077 Göttingen

We aim to extrapolate the solar atmosphere from vector magnetograms by the optimization technique. Magnetic and non-magnetic forces are equally important in the upper photosphere and chromosphere. Consequently the plasma and magnetic field have to be computed self-consistently, in lowest order with a magnetohydrostatic model. Even though the numerical solutions are much more time-consuming compared with the analytical solutions, their ability to reconstruct the strong localized concentration of electric current and Lorentz force is superior. In this talk, I will present a strict test of the new code with a radiative MHD simulation and its first application to high resolution vector magnetograms measured by SUNRISE/IMaX.