Physics
Scientific paper
May 2009
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009agusmsm13a..02s&link_type=abstract
American Geophysical Union, Spring Meeting 2009, abstract #SM13A-02
Physics
2756 Planetary Magnetospheres (5443, 5737, 6033), 6275 Saturn, 6280 Saturnian Satellites, 7837 Neutral Particles (2151)
Scientific paper
The neutral particle dominance over charged particles in Saturn's magnetosphere was evident prior to Cassini arrival at Saturn in 2004. However, the observation of active plumes emanating from the southern pole of the small icy moon, Enceladus provided key information for understanding particle sources and dynamics in the magnetospheric region. Estimates show this 252 km radius moon is likely the dominant source of particles in the magnetosphere producing 1027 to 1028 neutral water molecules per second. Cassini has flown through the plumes on several occasions which appear to indicate variability in this source rate. For this research, we use Cassini CAPS, MIMI and INMS observations during these encounters to constrain our 3-D multi-species neutral particle model to estimate the plume source rate for these encounters and also examine the impact of potential variability on magnetospheric neutral gas density.
Johnson Robert E.
McNutt Ralph
Mitchell Donald G.
Perry Malcolm
Smith Howard T.
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