Evidence provided by Galileo of ultra low frequency waves within Jupiter's middle magnetosphere
Evidence provided by Galileo of ultra low frequency waves within Jupiter's middle magnetosphere
复制标题
伽利略提供的木星中磁层内超低频波的证据
DOI：
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发表时间：
2000
期刊：
影响因子：
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通讯作者：
M. Dougherty
中科院分区：
文献类型：
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作者：
R. Wilson;M. Dougherty
旅行者号和木星探测器在木星中磁层昼侧的测量结果为磁力计数据中的超低频波提供了证据，特别是周期为10-20分钟的波。伽利略号是第一个环绕木星的轨道飞行器使命，也是第一个广泛研究夜侧磁层的飞行器。当伽利略号通过赤道电流片时，类似的波是可辨别的，在电流片区域之外几乎没有发现特征。数据的概述显示，在10-20分钟周期范围内，只有12%的交叉点在磁场的任何分量中没有任何波特征。这些波的大部分被发现在垂直场分量。因此，这些波普遍存在于夜侧磁层，当沿着与白天的早期工作相结合时，似乎表明这些超低频波是一种全球现象。
The Voyager and Ulysses spacecraft measurements from the dayside of Jupiter's middle magnetosphere provided evidence for ultra low frequency waves in the magnetometer data, in particular waves of periods 10–20 minutes. Galileo is the first orbiter mission around Jupiter and the first to extensively study the nightside magnetosphere. Similar waves are discernible when Galileo passed through the equatorial current sheet with very few features being noticed outside of the current sheet regions. An overview of the data shows that only 12% of crossings do not have any wave signatures in any component of magnetic field in the 10–20 minute period regime. The majority of these waves are found in the perpendicular field component. These waves are thus prevalent over the nightside magnetosphere and when combined along with the earlier work on the dayside seems to suggest that these ultra low frequency waves are a global phenomenon.