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Communication Dans Un Congrès Année : 2010

The sodium emission from Mercury's exosphere as detected by the IMW coordinated campaign in June 2006

Résumé

Since its discovery in 1985, sodium emission from the environment of Mercury is generally used as a tracer to monitor the brightness variations, morphology and anisotropies of the Hermean exosphere. The information derived from Na observations is very important for two main reasons: 1. to understand the exosphere source processes acting on the Hermean surface and their relative contributions, and 2. to understand the interconnections of this gaseous envelope with the interplanetary environment, including the Sun and interplanetary dust. The first International Mercury Watch (IMW) campaign was conducted in June 2006, with four different international teams observing Mercury's exosphere from four different telescopes located on the Canary Islands (TNG) and Hawaii (CFHT, AEOS and Tohoku/Haleakala). The aim of such synergy was to collect multi-technique data sets to enable comparative studies of simultaneous observations, to coordinate the study of short time-scale variability patterns, and to foster the use of ground-based observations for extended coverage of exospheric processes at Mercury. Results of the campaign are presented here and future plans of the IMW program are discussed.
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Dates et versions

hal-04115597 , version 1 (02-06-2023)

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Valeria Mangano, Michael Mendillo, François Leblanc, Shingo Kameda. The sodium emission from Mercury's exosphere as detected by the IMW coordinated campaign in June 2006. 38th COSPAR Scientific Assembly, Jul 2010, Bremen, Germany. pp.5. ⟨hal-04115597⟩
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