Auroral Processes Associated with Saturn's Moon Enceladus
Auroral Processes Associated with Saturn's Moon Enceladus
复制标题
与土星卫星土卫二相关的极光过程
DOI：
10.1029/2011gm001174
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发表时间：
2013
期刊：
影响因子：
3.2
通讯作者：
W. Pryor
中科院分区：
文献类型：
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作者：
D. Gurnett;W. Pryor
极光现象其他行星地球物理Mon © 2012.美国10.1029/2011GM卡西尼号航天器的观测表明，土星的小卫星土卫二从其南极地区的火山状喷口喷出一股类似间歇泉的水蒸气和小冰粒。研究还表明，这种羽流与土星快速旋转的磁层相互作用，在土星大气中靠近月球磁通量管底部的地方产生紫外极光发射。引起极光的带电粒子是如何被加速的，这是当前人们相当感兴趣的一个话题。在这一章中，我们给出了与土卫二相关的极光过程的概述。我们表明，羽流与土星的共转磁层等离子体的相互作用导致了各种各样的影响，包括强烈的本地扭曲的行星磁场，电子束的加速，哨声模式的无线电发射的产生，和激发的阿尔文驻波，连接土卫二土星的高层大气。这些效应中有许多类似于在木星的卫星木卫一附近观察到的效应，木卫一在其磁通管的底部附近产生极光发射，以及地球极光中发生的效应。
Auroral Phenomen Other Planets Geophysical Mon © 2012. American 10.1029/2011GM Observations from the Cassini spacecraft have shown that Saturn’s small moon Enceladus emits a geyser-like plume of water vapor and small icy particles from volcano-like vents in its southern polar region. It has also been shown that the interaction of this plume with the rapidly rotating magnetosphere of Saturn produces UV auroral emissions in Saturn’s atmosphere near the foot of the moon’s magnetic flux tube. Just how the charged particles responsible for the aurora are accelerated is a topic of considerable current interest. In this chapter, we give an overview of auroral processes associated with Enceladus. We show that the interaction of the plume with Saturn’s corotating magnetospheric plasma leads to a wide variety of effects, including strong local distortions of the planetary magnetic field, the acceleration of electron beams, the generation of whistler mode radio emissions, and the excitation of a standing Alfvén wave that links Enceladus to Saturn’s upper atmosphere. Many of these effects are similar to those observed near Jupiter’s moon Io, which is known to produce auroral emissions near the foot of its magnetic flux tube, and to those occurring in the Earth’s aurora.
带负电的羽流颗粒对土卫二阿尔文翼结构的影响：混合模拟与卡西尼磁力计数据
影响因子：
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作者：
Kriegel;S. Simon;U. Motschmann;J. Saur;F. M. Neubauer;A. M. Persoon;M. K. Dougherty;D. A. Gurnett
通讯作者：
D. A. Gurnett
带负电的羽流颗粒和半球耦合电流对土卫二阿尔文翼结构的影响：卡西尼号磁力计观测的分析模型
影响因子：
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作者：
Kriegel;Neubauer;Motschmann;Dougherty
通讯作者：
Dougherty
土卫二不对称等离子体相互作用中的半球耦合
影响因子：
--
作者：
F. M. Neubauer;N. Schilling
通讯作者：
N. Schilling