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Modélisation et simulation de l'interaction du Vent Solaire avec Mercure et Mars

Abstract : The purpose of this work is to study the interactions between the Solar Wind (SW) and Mercury and/or Mars by means of numerical simulations. In the context of previous observations made Mariner 10 and MESSENGER, and the preparation of the future mission Bepi Colombo, we developed a three-dimensional and parallel hybrid model of the interaction of the SW with Mercury's magnetosphere. We also investigated the reflection of incident particles on the Martian bow shock, using a test-particle program combined with hybrid simulation results. Despite the fact that observations are necessary for studying the interaction of the SW with a planetary obstacle, they are not sufficient and numerical modelling represents an essential tool to complete observations analysis. In the second chapter we introduce the different simulation models used to study the interactions of the SW with Mercury and Mars. We describe in particular the building steps of our Mercury hybrid model. The results concerning the hermean environment, obtained with models which preceded ours, are described in the first part of the Chapter 3. In the following of this chapter, we present our results about the intrinsic magnetic field and the magnetospheric plasma of Mercury. In the Chapter 4, we describe the hybrid model and the test-particle program we used to investigate the reflection of SW and planetary protons on the Martian bow shock. Then we exhibit the results. Although this study has been led on the Martian bow shock, it can be easily adapted on Mercury.
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Submitted on : Monday, April 15, 2013 - 11:47:02 AM
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  • HAL Id : tel-00813218, version 1

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Emilie Richer. Modélisation et simulation de l'interaction du Vent Solaire avec Mercure et Mars. Physique des plasmas [physics.plasm-ph]. Université Pierre et Marie Curie - Paris VI, 2012. Français. ⟨tel-00813218⟩

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