Imaging Thermal He+ in Geospace from the Lunar Surface

Details Imaging Thermal He+ in Geospace from the Lunar Surface Imaging Thermal He+ in Geospace from the Lunar Surface

Dec 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006agufmsm43a1480g&link_type=abstract

American Geophysical Union, Fall Meeting 2006, abstract #SM43A-1480

Physics

2740 Magnetospheric Configuration And Dynamics, 2760 Plasma Convection (2463), 2768 Plasmasphere, 6250 Moon (1221)

Scientific paper

Extreme ultraviolet observations of He+ ions by the EUV instrument on the IMAGE spacecraft have dramatically improved our ability to observe plasmasphere dynamics in the inner magnetosphere. These observations from a vantage at primarily high latitudes have revealed the phenomenology of thermal density structures and continue to lead us toward a more complete understanding of inner magnetospheric electric fields and plasmaspheric refilling. Recent analyses have brought attention to the disposition of thermal plasma eroded from the plasmasphere and convected into the outer dayside magnetosphere. The extent to which this plasma is lost into the solar wind or recirculated across the polar cap or through the magnetospheric flanks is an important outstanding question that relates to the influence this plasma has on space weather processes in geospace. A concept for implementation of enhanced EUV observations from the lunar surface to resolve questions about the global circulation of He+ plasma in the magnetosphere will be presented. The instrument and science package subsystem elements, including anticipated component capabilities and limitations will be discussed. Attention will also be given to the potential impact of dust contamination.

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