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

被引：209

作者：

Gurnett, DA ^{[1
]}

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

机构：

[1] Univ Iowa, Dept Phys & Astron, Iowa City, IA 52242 USA

[2] Observ Paris, F-92195 Meudon, France

[3] CETP, Inst Pierre Simon La Pl, F-78140 Velizy Villacoublay, France

[4] Ctr Etud Spatiale Rayonnements, CNRS, F-31028 Toulouse, France

[5] Swedish Inst Space Phys, SE-75121 Uppsala, Sweden

[6] NASA, Goddard Space Flight Ctr, Greenbelt, MD 20771 USA

[7] Univ Minnesota, Dept Phys & Astron, Minneapolis, MN 55455 USA

[8] Austrian Acad Sci, Space Res Inst, A-8042 Graz, Austria

[9] Univ Sheffield, Dept Automat Control & Syst Engn, Sheffield S1 4DU, S Yorkshire, England

[10] Univ Oslo, Dept Phys, N-0316 Oslo, Norway

来源：

SCIENCE | 2005年 / 307卷 / 5713期

关键词：

D O I：

10.1126/science.1105356

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

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 aurora[ hiss emissions were observed near the rings, suggesting that a strong electrodynamic interaction is occurring in or near the rings.

引用

页码：1255 / 1259

页数：5

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