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Filamentary structure of streamers in Transient Luminous Events
- Prelegent(ci)
- Paweł Jujeczko
- Termin
- 29 lutego 2024 12:30
- Pokój
- p. 5070
- Seminarium
- Seminarium Zakładu Równań Fizyki Matematycznej
The subject of the seminar will be a numerical modelling of instabilities in a weakly-ionized plasma with a use of kinetic theory plasma models. The natural phenomenon being treated is the process of branching (filamentation) of a sprite's streamer. Sprite is a visual phenomenon of Transient Luminous Events (TLE) family which occurs above large and intensive thunderstorms. Its filamentary structure tends to branch in a way similar to the lightning channel, but the underlying mesospherical environment is different. A possible kinetic plasma instability related to this branching was analysed by Błęcki & Mizerski (2018), however the modelling revealed that non-linear effects set on early in the simulations. Other possible filamentation instabilities will be also elaborated.
