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Communication Dans Un Congrès Année : 2010

The Evolution Of Mercury'S Exosphere Through Four Years of Observation With Themis

François Leblanc

Résumé

Almost twenty years of ground based observations have highlighted several features of Mercury's exosphere which will further explore by two forthcoming space missions to Mercury, MESSENGER to be inserted in 2011 and Bepi-Colombo to be inserted in 2020. Long and short term evolutions of the exosphere, local and global spatial distributions, its sources and sinks and its coupling with both surface and magnetosphere are among the characteristics of Mercury's exosphere that begin to be more clearly understood. Actually, ground based observations provide a view of Mercury's exosphere that will be only poorly seen by these two space missions. As an example, the global annual cycle of Mercury's exosphere, its energetic characteristics and its large scale structure will be poorly or not at all observed by these space missions. In this presentation, we will summarize these points and will describe our most recent observations using THEMIS Solar Telescope.
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hal-04115369 , version 1 (02-06-2023)

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Alain Doressoundiram, François Leblanc. The Evolution Of Mercury'S Exosphere Through Four Years of Observation With Themis. 42nd Annual Meeting of the DPS of the American Astronomical Society 2010, Oct 2010, Pasadena (California), United States. pp.997. ⟨hal-04115369⟩
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