Mercury’s Complex Exosphere: Results from MESSENGER’s Third Flyby

Details Mercury’s Complex Exosphere: Results from MESSENGER’s Third Flyby Mercury’s Complex Exosphere: Results from MESSENGER’s Third Flyby

Aug 2010

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010sci...329..672v&link_type=abstract

Science, Volume 329, Issue 5992, pp. 672- (2010).

Computer Science

14

Scientific paper

During MESSENGER’s third flyby of Mercury, the Mercury Atmospheric and Surface Composition Spectrometer detected emission from ionized calcium concentrated 1 to 2 Mercury radii tailward of the planet. This measurement provides evidence for tailward magnetospheric convection of photoions produced inside the magnetosphere. Observations of neutral sodium, calcium, and magnesium above the planet’s north and south poles reveal altitude distributions that are distinct for each species. A two-component sodium distribution and markedly different magnesium distributions above the two poles are direct indications that multiple processes control the distribution of even single species in Mercury’s exosphere.

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