title: Radio and plasma wave observations at Saturn from Cassini's approach and first orbit.
abstract: We report data from the Cassini radio and plasma wave instrument during the approach and first orbit at Saturn. During the approach, radio emissions from Saturn showed that the radio rotation period is now 10 hours 45 minutes 45 +/- 36 seconds, about 6 minutes longer than measured by Voyager in 1980 to 1981. In addition, many intense impulsive radio signals were detected from Saturn lightning during the approach and first orbit. Some of these have been linked to storm systems observed by the Cassini imaging instrument. Within the magnetosphere, whistler-mode auroral hiss emissions were observed near the rings, suggesting that a strong electrodynamic interaction is occurring in or near the rings.
authors.affiliation: Department of Physics and Astronomy, University of Iowa, Iowa City, IA 52242, USA. donald-gurnett@uiowa.edu
authors.forename: D A
authors.initials: DA
authors.lastname: Gurnett
authors.forename: W S
authors.initials: WS
authors.lastname: Kurth
authors.forename: G B
authors.initials: GB
authors.lastname: Hospodarsky
authors.forename: A M
authors.initials: AM
authors.lastname: Persoon
authors.forename: T F
authors.initials: TF
authors.lastname: Averkamp
authors.forename: B
authors.initials: B
authors.lastname: Cecconi
authors.forename: A
authors.initials: A
authors.lastname: Lecacheux
authors.forename: P
authors.initials: P
authors.lastname: Zarka
authors.forename: P
authors.initials: P
authors.lastname: Canu
authors.forename: N
authors.initials: N
authors.lastname: Cornilleau-Wehrlin
authors.forename: P
authors.initials: P
authors.lastname: Galopeau
authors.forename: A
authors.initials: A
authors.lastname: Roux
authors.forename: C
authors.initials: C
authors.lastname: Harvey
authors.forename: P
authors.initials: P
authors.lastname: Louarn
authors.forename: R
authors.initials: R
authors.lastname: Bostrom
authors.forename: G
authors.initials: G
authors.lastname: Gustafsson
authors.forename: J-E
authors.initials: JE
authors.lastname: Wahlund
authors.forename: M D
authors.initials: MD
authors.lastname: Desch
authors.forename: W M
authors.initials: WM
authors.lastname: Farrell
authors.forename: M L
authors.initials: ML
authors.lastname: Kaiser
authors.forename: K
authors.initials: K
authors.lastname: Goetz
authors.forename: P J
authors.initials: PJ
authors.lastname: Kellogg
authors.forename: G
authors.initials: G
authors.lastname: Fischer
authors.forename: H-P
authors.initials: HP
authors.lastname: Ladreiter
authors.forename: H
authors.initials: H
authors.lastname: Rucker
authors.forename: H
authors.initials: H
authors.lastname: Alleyne
authors.forename: A
authors.initials: A
authors.lastname: Pedersen