HR: 16:20h
AN: P54A-02 INVITED     [Abstracts]
TI: An Overview of Cassini Radio, Plasma Wave, and Langmuir Probe Observations in the Vicinity of Saturn
AU: * Gurnett, D
EM: donald-gurnett@uiowa.edu
AF: Univ. of Iowa, Dept. of Physics and Astronomy, Iowa City, IA 52242 United States
AU: Kurth, W
AF: Univ. of Iowa, Dept. of Physics and Astronomy, Iowa City, IA 52242 United States
AU: Hospodarsky, G
AF: Univ. of Iowa, Dept. of Physics and Astronomy, Iowa City, IA 52242 United States
AU: Persoon, A
AF: Univ. of Iowa, Dept. of Physics and Astronomy, Iowa City, IA 52242 United States
AU: Desch, M
AF: NASA, Goddard Space Flight Ctr., Greenbelt, 20771 United States
AU: Farrell, W
AF: NASA, Goddard Space Flight Ctr., Greenbelt, 20771 United States
AU: Kaiser, M
AF: NASA, Goddard Space Flight Ctr., Greenbelt, 20771 United States
AU: Goetz, K
AF: Univ. of Minnesota, Dept. of Physics and Astronomy, Minneapolis, 55455 United States
AU: Cecconi, B
AF: Observatoire de Paris, ARPEGES, Meudon, 92195 France
AU: Lecacheux, A
AF: Observatoire de Paris, ARPEGES, Meudon, 92195 France
AU: Zarka, P
AF: Observatoire de Paris, ARPEGES, Meudon, 92195 France
AU: Harvey, C
AF: CESR, CNRS, Toulouse, 31028 France
AU: Louarn, P
AF: CESR, CNRS, Toulouse, 31028 France
AU: Canu, P
AF: CETP, UVSQ, Velizy, 78140 France
AU: Cornilleau-Wehrlin, N
AF: CETP, UVSQ, Velizy, 78140 France
AU: Galopeau, P
AF: CETP, UVSQ, Velizy, 78140 France
AU: Roux, A
AF: CETP, UVSQ, Velizy, 78140 France
AU: Fischer, G
AF: Austrian Academy of Sciences, Space Research Inst., Graz, A8010 Austria
AU: Ladreiter, H
AF: Austrian Academy of Sciences, Space Research Inst., Graz, A8010 Austria
AU: Rucker, H
AF: Austrian Academy of Sciences, Space Research Inst., Graz, A8010 Austria
AU: Alleyne, H
AF: Univ. of Sheffield, Dept. Automatic Control & Systems Eng., Sheffield, S1 4DU United Kingdom
AU: Bostrom, R
AF: Swedish Inst. of Space Physics, Box 537, Uppsala, SE 75121 Sweden
AU: Gustafsson, G
AF: Swedish Inst. of Space Physics, Box 537, Uppsala, SE 75121 Sweden
AU: Wahlund, J
AF: Swedish Inst. of Space Physics, Box 537, Uppsala, SE 75121 Sweden
AU: Pedersen, A
AF: Univ. of Oslo, Dept. of Physics, Oslo, N0316 Norway
AB: The Cassini Radio and Plasma Wave Science (RPWS) instrument detected a wide variety of radio and plasma wave phenomena during the approach and first flyby of Saturn. These include Saturn kilometric radiation (SKR), Saturn electrostatic discharges (SEDs), upstream electrostatic waves, the bow shock, trapped continuum radiation, whistler-mode chorus emissions, electrostatic upper-hybrid emissions, impulsive signals from dust impacts, narrowband electromagnetic emissions in the low-density inner region of the magnetosphere, whistler-mode resonance-cone emissions similar to terrestrial auroral hiss, and many sporadic narrowband whistler-mode emissions apparently associated with the rings. In addition, electron density and temperature measurements were obtained from a Langmuir probe. In this paper we interpret these observations in terms of various key parameters and processes in the Saturnian system. These including new values for the radio rotation period of Saturn, long term variations in the occurrence of atmospheric lightning, the plasma density and temperature in the inner region of Saturn's magnetosphere, the distribution of micron-sized particle near the ring plane, evidence of an electrodynamic interaction between the rings and the co-rotating magnetosphere of Saturn, and the possible occurrence of meteoroid impacts on the rings.
DE: 7867 Wave/particle interactions
DE: 7871 Waves and instabilities
DE: 5737 Magnetospheres (2756)
DE: 5759 Rings and dust
SC: Planetary Sciences [P]
MN: 2004 AGU Fall Meeting