Other
Scientific paper
Dec 2005
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005agufm.p33c0259s&link_type=abstract
American Geophysical Union, Fall Meeting 2005, abstract #P33C-0259
Other
2756 Planetary Magnetospheres (5443, 5737, 6033), 6281 Titan
Scientific paper
During the TA flyby inbound, between 15 R-Titan and 4 R-Titan, the Cassini Plasma Spectrometer (CAPS) detected ions which were very likely pick-up ions. These ions -always arrived from a direction perpendicular to the local magnetic field, -had a narrow spectrum in the count-energy plots, -always appeared in pairs with energy ratio 2, -were identified as m/q=1 and m/q=2 ions when simultaneous time of flight data were available, -were observed during 11 consecutive actuator sweeps, -in most of the cases the velocities were about twice of the corotating plasma velocity. If they were pickup ions, they could not originate from Titan because they were observed at much larger distances than those of what ions escaping from the moon could cover. Another option is that they arrived from a local source, possibly from a local neutral cloud. In this study we analyse first whether it can be substantiated that the ion population described above were pickup ions, and we also investigate all the other encounters to clarify whether such pickup population are a permanent feature of the plasma environment of Titan.
Bebesi Zs.
Berthelier Jean-Jacques
Bouhram Mehdi
Coates Andrew J.
Crary F. F.
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