Heidelberg 2022 – scientific programme

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EP: Fachverband Extraterrestrische Physik

EP 12: Sun and Heliosphere

EP 12.6: Talk

Friday, March 25, 2022, 12:45–13:00, EP-H1

Quasi-discontinuous solar wind models — •Lukas Westrich — Institut für theoretische Physik IV, Ruhr-Universität Bochum, Deutschland

Recently Shergelashvili et al. (2020) developed a new class of discontinuous solar wind solutions. They considered a case of quasi-adiabatic radial expansion with a jump in the flow velocity, density, and temperature but a continuous Mach number at the critical point and derived analytical solutions. Therefore, they proposed a localized external heating source without actual modeling. After a brief discussion of this concept, I will present continuous numerical solutions, more similar to the classical Parker solar wind model, but with quasi-adiabatic radial expansion with an explicitly formulated localized heating source. This kind of solutions can reproduce the analytically derived solutions without discontinuous jumps in the physical properties.