Radio and Plasma Wave Observations at Saturn from Cassini's Approach and First Orbit
Radio and Plasma Wave Observations at Saturn from Cassini's Approach and First Orbit
复制标题
卡西尼号接近和第一轨道对土星的无线电和等离子波观测
作者：
D. Gurnett;W. Kurth;G. Hospodarsky;A. Persoon;T. Averkamp;B. Cecconi;A. Lecacheux;P. Zarka;P. Canu;N. Cornilleau;P. Galopeau;A. Roux;C. Harvey;P. Louarn;R. Boström;G. Gustafsson;J. Wahlund;M. Desch;W. Farrell;M. Kaiser;K. Goetz;P. Kellogg;G. Fischer;H. P. Ladreiter;H. Rucker;H. Alleyne;A. Pedersen
我们报告的数据从卡西尼号无线电和等离子体波仪器的方法和第一轨道在土星。在接近过程中，来自土星的无线电辐射显示，无线电旋转周期现在是10小时45分45 ± 36秒，比旅行者号在1980年至1981年测量的时间长约6分钟。此外，在接近和第一次轨道运行期间，从土星闪电中检测到许多强烈的脉冲无线电信号。其中一些与卡西尼号成像仪器观测到的风暴系统有关。在磁层内，在环附近观测到哨声模式的极光嘶嘶声发射，这表明在环内或附近正在发生强烈的电动相互作用。
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.