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Simulations de l'interaction du vent solaire avec des magnétosphères planétaires : de Mercure à Uranus, le rôle de la rotation planétaire

Abstract : The topic of the thesis is the part of planetary rotation in the global structure of the solar wind interaction with planetary magnetospheres using MHD simulations. We discuss the distinction between slow and fast rotators from a MHD point of view. In the case of a non-rotating magnetosphere (as is the one of Mercury), the part of standing MHD modes is studied, along with a method to identify them in simulations. A fast-rotating but stationary magnetosphere (inspired by the case of Saturn) is presented in details and provides a good test to validate the new version of the AMRVAC code allowing for any configuration regarding the respective directions of the planetary spin axis, planetary magnetic axis, solar wind inflow direction, and IMF orientation. Finally, a random configuration, with a large angle between the planetary spin and magnetic axis, is analyzed for the first time in presence of a magnetized solar wind, using configurations inspired from the planet Uranus at solstice and equinox.
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Léa Griton. Simulations de l'interaction du vent solaire avec des magnétosphères planétaires : de Mercure à Uranus, le rôle de la rotation planétaire. Astrophysique [astro-ph]. Université Paris sciences et lettres, 2018. Français. ⟨NNT : 2018PSLEO006⟩. ⟨tel-02097736⟩

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