Sodium exosphere of Mercury during MESSENGER flybys

Details Sodium exosphere of Mercury during MESSENGER flybys Sodium exosphere of Mercury during MESSENGER flybys

Dec 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009agufm.p21a1208p&link_type=abstract

American Geophysical Union, Fall Meeting 2009, abstract #P21A-1208

Physics

[5400] Planetary Sciences: Solid Surface Planets, [6235] Planetary Sciences: Solar System Objects / Mercury

Scientific paper

Two flybys of MESSENGER on January 14, 2008 and October 6, 2008 in a vicinity of planet Mercury given us an insight into a spatial distribution of heavy ion exosphere. Because of relatively quiet solar wind conditions and the opposite orientation of interplanetary magnetic field (IMF) we can compare "in situ" observations with numerical simulations for two different study cases. During the flybys, IMF had strong radial Sun-Mercury direction but nonzero northward and southward component for the first flyby (M1) and second flyby (M2), respectively. We found that comparative study of particle tracing simulations using stationary electromagnetic fields from hybrid kinetic model gives us a good estimate of sodium exosphere when compared with EPPS-FIPS instruments.

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