The interaction between the magnetosphere of Saturn and Titan's ionosphere
The interaction between the magnetosphere of Saturn and Titan's ionosphere
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土星磁层与泰坦电离层之间的相互作用
DOI：
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发表时间：
2001
期刊：
影响因子：
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通讯作者：
A. Kliore
中科院分区：
文献类型：
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作者：
A. Nagy;Yifan Liu;K. Hansen;K. Kabin;T. Gombosi;M. Combi;D. Dezeeuw;K. Powell;A. Kliore
三维（3-D）多物种磁流体动力学模型用于研究泰坦电离层和土星磁层的相互作用。所考虑的三个通用种类是轻离子种类（例如，H + 、H 2 + 和 H 3 + ）、中离子种类（例如，N + 和 CH 5 + ）和重离子种类（例如，N 2 + 和HCNH + ）。考虑了外层质量负载、主要化学反应和离子中性碰撞的影响。上游参数被选择为泰坦位于土星磁层时的标称值。仿真结果与 Voyager 测量值以及相关模型计算进行了比较。 3-D 三物种模型结果相当好地再现了全球特征，例如磁障、磁尾和主要电离层物种的分布。尾部主要电离层物质（即重离子物质）的向外逃逸通量经计算约为 6.5 × 10 24 s -1 。
A three-dimensional (3-D) multi-species magnetohydrodynamic model was used to study the interaction of Titan's ionosphere and Saturn's magnetosphere. The three generic species which were considered are light (e.g., H + , H 2 + , and H 3 + ), medium (e.g., N + and CH 5 + ), and heavy (e.g., N 2 + and HCNH + ) ion species. The effects of exospheric mass loading, major chemical reactions, and ion-neutral collisions were considered. The upstream parameters were selected to be the nominal values for the case when Titan is in the magnetosphere of Saturn. The simulation results are compared with Voyager measurements as well as related model calculations. The 3-D three-species model results reproduce reasonably well the global features such as magnetic barrier, magnetotail, and the distributions of the major ionospheric species. The outward escape flux of the major ionospheric species (i.e., the heavy ion species) from the tail is calculated to be approximately 6.5 × 10 24 s -1 .