Gurnett DA, Kurth WS, Hospodarsky GB, Persoon AM, Averkamp TF, Cecconi B, Lecacheux A, Zarka P, Canu P, Cornilleau-Wehrlin N, Galopeau P, Roux A, Harvey C, Louarn P, Bostrom R, Gustafsson G, Wahlund JE, Desch MD, Farrell WM, Kaiser ML, Goetz K, Kellogg PJ, Fischer G, Ladreiter HP, Rucker H, Alleyne H, Pedersen A. Radio and Plasma Wave Observations at Saturn from Cassini's Approach and First Orbit.
Science 2005;
307:1255-9. [PMID:
15604362 DOI:
10.1126/science.1105356]
[Citation(s) in RCA: 210] [Impact Index Per Article: 11.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
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.
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