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EP: Fachverband Extraterrestrische Physik
EP 1: Planets and small Objects
EP 1.4: Talk
Monday, March 20, 2023, 11:45–12:00, HSZ/0004
On the propagation of linear and nonlinear waves in the Venusian ionosphere — •Horst Fichtner1, Alaa Fayad1,2, Samy Salem1,2, Marian Lazar1,3, Waled Moslem1,2, and Sara Morsi1,2,4 — 1Institut für Theoretische Physik IV, Ruhr-Universität Bochum, 44780 Bochum, Germany — 2Department of Physics, Faculty of Science, Port Said University, Port Said 42521, Egypt — 3Centre for mathematical Plasma Astrophysics, KU Leuven, 3001 Leuven, Belgium — 4The British University in Egypt, El-Shorouk City, Cairo, Egypt
The ionosphere of Venus represents, partly due to its interaction with the solar wind, a dynamic plasma environment that hosts a variety of plasma waves. These waves play potentially significant roles for the structure of this region, for the atmospheric erosion, or for the transport and acceleration of energetic particles. In the presentation both linear and nonlinear waves are studied within the framework of (multi-species) hydrodynamics and magnetohydrodynamics, which allows, depending on the model assumptions, to analyze their dispersion in a linearizing approach and their nonlinear dynamics using a perturbative approach. Within the hydrodynamic treatment also the ion outflow from the Venusian atmosphere can be investigated.