Radio and plasma wave obervations at Saturn from Cassini's approach and first orbit

D. A. Gurnett, W. S. Kurth, C. B. Hospodarsky, A. M. Persoon, T. F. Averkamp, B. Cecconi, A. Lecacheux, P. Zarka, P. Canu, N. Cornilleau-Wehrlin, P. Galopeau, A. Roux, C. Harvey, P. Louarn, U. Bostrom, G. Gustafsson, J. E. Wahlund, M. D. Desch, W. M. Farrell, M. L. KaiserK. Goetz, P. J. Kellogg, G. Fischer, H. P. Ladreiter, H. Rucker, H. Alleyne, A. Pedersen

Research output: Contribution to journalArticlepeer-review

203 Scopus citations

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.

Original languageEnglish (US)
Pages (from-to)1255-1259
Number of pages5
JournalScience
Volume307
Issue number5713
DOIs
StatePublished - Feb 25 2005

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