Comparative Na and K Mercury and Moon exospheresстатья
Статья опубликована в высокорейтинговом журнале
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Дата последнего поиска статьи во внешних источниках: 4 марта 2022 г.
Аннотация:Sodium and, in a lesser way, potassium atomic components of surface-bounded exospheresare among the brightest elements that can be observed from the Earth in our Solar System.Both species have been intensively observed around Mercury, the Moon and the GalileanMoons. During the last decade, new observations have been obtained thanks to space missionscarrying remote and in situ instrumentation that provide a completely original view ofthese species in the exospheres of Mercury and the Moon. They challenged our understandingand modelling of these exospheres and opened new directions of research by suggestingthe need to better take into account the relationship between the surface-exosphere and themagnetosphere. In this paper, we first review the large set of observations of Mercury andthe Moon Sodium and Potassium exospheres. In the second part, we list what it tells us onthe sources and sinks of these exospheres focusing in particular on the role of their magnetospheresof these objects and then discuss, in a third section, how these observations helpus to understand and identify the key drivers of these exospheres.