Saturn from Cassini-Huygens
Saturn from Cassini-Huygens
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来自卡西尼-惠更斯号的土星
DOI：
10.1007/978-1-4020-9217-6_12
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发表时间：
2009
期刊：
影响因子：
--
通讯作者：
Kurth W
中科院分区：
文献类型：
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作者：
Kurth W
卡西尼号提供了许多独特的机会来了解土星的极光过程，并突出了地球和木星极光物理学的差异和相似之处。与哈勃空间望远镜协调开展了一些活动，以便卡西尼号能够提供关于撞击太阳风的地面实况或磁层状况的现场测量结果，从而在太阳风对极光强度、形态和演变的影响以及磁层动态之间建立定性和有时定量的关系。哈勃紫外线图像是由卡西尼号自己的极光遥感增强。卡西尼号对磁层结构和动力学的原位研究在本书的其他章节中讨论，为理解土星极光的主要驱动因素和磁层动力学在其变化中的作用提供了背景。最后，卡西尼号的三维主要磁层使命调查在高倾角轨道上达到高潮，将其放置在相对较小的径向距离，而极光场线，提供了第一个这样的极光粒子和领域在地球以外的行星现场观测。新的观测结果催生了一系列努力，以模拟太阳风与磁层的相互作用，并了解这种动力学如何影响极光。
Cassini has afforded a number of unique opportunities to understand auroral processes at Saturn and to highlight both differences and similarities with auroral physics at both Earth and Jupiter. A number of campaigns were coordinated with the Hubble Space Telescope such that Cassini could provide either ground truth on the impinging solar wind or in situ measurements of magnetospheric conditions leading to qualitative and sometimes quantitative relationships between the solar wind influence on the intensity, the morphology and evolution of the auroras, and magneto-spheric dynamics. The Hubble UV images are enhanced by Cassini's own remote sensing of the auroras. Cassini's in situ studies of the structure and dynamics of the magnetosphere discussed in other chapters of this book provide the context for understanding the primary drivers of Saturn's auroras and the role of magnetospheric dynamics in their variations. Finally, Cassini's three dimensional prime mission survey of the magnetosphere culminates in high inclination orbits placing it at relatively small radial distances while on auroral field lines, providing the first such in situ observations of auroral particles and fields at a planet other than Earth. The new observations have spawned a number of efforts to model the interaction of the solar wind with the magnetosphere and understand how such dynamics influence the auroras.