HR: 1340h
AN: P43A-0955    [Abstracts]
TI: Electron microsignatures from the Saturnian satellites: Cassini MIMI/LEMMS observations
AU: * Roussos, E
EM: roussos@mps.mpg.de
AF: Max Planck Institut fuer Sonnersystemforschung, Max Planck Strasse 2, Katlenburg-Lindau, 37191 Germany
AU: Krupp, N
EM: krupp@mps.mpg.de
AF: Max Planck Institut fuer Sonnersystemforschung, Max Planck Strasse 2, Katlenburg-Lindau, 37191 Germany
AU: Jones, G H
EM: jones@mps.mpg.de
AF: Max Planck Institut fuer Sonnersystemforschung, Max Planck Strasse 2, Katlenburg-Lindau, 37191 Germany
AU: Lagg, A
EM: lagg@mps.mpg.de
AF: Max Planck Institut fuer Sonnersystemforschung, Max Planck Strasse 2, Katlenburg-Lindau, 37191 Germany
AU: Woch, J
EM: woch@mps.mpg.de
AF: Max Planck Institut fuer Sonnersystemforschung, Max Planck Strasse 2, Katlenburg-Lindau, 37191 Germany
AU: Paranicas, C
EM: Chris.Paranicas@jhuapl.edu
AF: John Hopkins University, Applied Physics Laboratory, 11100 Johns Hopkins Road, Laurel, Maryland, MD 20723 United States
AU: Mitchell, D G
EM: Donald.G.Mitchell@jhuapl.edu
AF: John Hopkins University, Applied Physics Laboratory, 11100 Johns Hopkins Road, Laurel, Maryland, MD 20723 United States
AU: Krimigis, S M
EM: Tom.Krimigis@jhuapl.edu
AF: John Hopkins University, Applied Physics Laboratory, 11100 Johns Hopkins Road, Laurel, Maryland, MD 20723 United States
AU: Dougherty, M K
EM: m.dougherty@imperial.ac.uk
AF: Imperial College London, Blacklett Laboratory, Imperial College London, SW7 2AZ, London, SW7 2AZ United Kingdom
AU: Ip, W H
EM: wingip@astro.ncu.edu.tw
AF: Institute of Astronomy, National Central University, Chung-Li, Taiwan, 38, Wu Chuan Li, Taoyuan County, Chung-li, 320 Taiwan
AU: Armstrong, T P
EM: armstrong@ftecs.com
AF: Fundamental Technologies Inc., 2411 Ponderosa, Suite A, Lawrence, KS 66046 United States
AB: Since the Saturn Orbit Insertion in July 2004, Cassini has performed numerous crossings of Saturn's inner moons L-shells at various longitudinal distances from the moons. The Low Energy Magnetospheric Measurement System (LEMMS) has detected a significant number of absorption features, referred to as microsignatures, in the the lowest energy electron channels (20-200 keV). The detections occur mainly in the vicinity of Tethys and Dione L-shells, while microsignatures from Enceladus, Rhea and Mimas are less frequent. From the analysis of these features we present: (i) estimates of the radial diffusion coefficient in Saturn's radiation belts as a function of L and energy, including for the first time their dependence on local time, (ii) the region of influence that the electric fields and energetic events (e.g. injections) have on the electron drift shells and (iii) the implications for the unique interaction characteristics of each moon with Saturn's magnetospheric plasma. Data from the recent close flybys of Tethys, Dione and Rhea are also briefly discussed.
DE: 2730 Magnetosphere: inner
DE: 2732 Magnetosphere interactions with satellites and rings
DE: 2740 Magnetospheric configuration and dynamics
DE: 2774 Radiation belts
DE: 2778 Ring current
SC: Planetary Sciences [P]
MN: Fall Meeting 2005