HR: 0800h
AN: P41B-07    [Abstracts]
TI: Characteristics and Evolution of ion cyclotron waves in Saturn's magnetosphere associated with Cassini's engine exhaust.
AU: * Rodriguez-Martinez, M
EM: mario@fisesp.igeofcu.unam.mx
AF: Universidad Nacional Autonoma de Mexico, IGEF, Instituto de Geofisica, CU, Coyoacan, Mexico, DF 04510, Mexico
AU: Blanco-Cano, X
EM: xbc@geofisica,unam.mx
AF: Universidad Nacional Autonoma de Mexico, IGEF, Instituto de Geofisica, CU, Coyoacan, Mexico, DF 04510, Mexico
AU: Russell, C T
EM: ctrussel@igpp.ucla.edu
AF: University of California, IGPP, 405 Hilgard Ave , Los Angeles, CA 90095, United States
AU: Leisner, J S
EM: jleisner@ess.ucla.edu
AF: University of California, IGPP, 405 Hilgard Ave , Los Angeles, CA 90095, United States
AU: Dougherty, M K
EM: m.dougherty@ic.ac.uk
AF: Imperial College, Huxley Building Room 707 , London, United Kingdom
AB: On the day of Cassini's insertion on Saturn's magnetosphere (July 1, 2004) a long (90 minute) burst of ion cyclotron waves was observed. These waves were left-hand, elliptically polarized, and propagated at relatively large angles to the ambient magnetic field. Previous work (Russell et al., 2005) showed that the waves' frequency band was moderately broad and consistent with the singly ionized components of the engine exhaust gases: CO2, N2, CO, and H2O. Thus, wave origin has been explained in terms of an ion instability generated by ring- beam ions produced from the engine exhaust gases. In this work we analyze in further detail waves' characteristics and evolution.
DE: 5734 Magnetic fields and magnetism
DE: 5737 Magnetospheres (2756)
DE: 6275 Saturn
SC: Planetary Sciences [P]
MN: 2007 Joint Assembly