From a Weak to a Strong Comet — 3D Global Hybrid Simulation Studies
From a Weak to a Strong Comet — 3D Global Hybrid Simulation Studies
复制标题
从弱彗星到强彗星 — 3D 全局混合模拟研究
DOI：
10.1007/978-94-017-1088-6_31
复制
发表时间：
2002
影响因子：
0.9
通讯作者：
U. Motschmann
中科院分区：
文献类型：
--
作者：
T. Bagdonat;U. Motschmann
讨论了太阳风与弱彗星相互作用产生的等离子体结构。介绍了使用新开发的混合代码进行的数值模拟。这些模拟主要应用于维尔塔宁彗星的定量数据，该彗星将是罗塞塔任务的目标。预计在首次相遇时维尔塔宁彗星非常微弱。主要目的是讨论等离子体环境的不同特征，例如弱彗星特有的结构化摆线等离子体尾和非线性马赫锥，以及它们与诸如小激波、弓形激波、抗磁腔和在较强彗星上发现的“经典”磁尾等结构的关系。此外，还研究了这些各种特征对等离子体参数的敏感性。
Plasma structures resulting from the solar wind interaction with weak comets are discussed. Numerical simulations using a newly developed hybrid code are presented. The simulations are primarily applied to quantitative data for comet Wirtanen, which will be the target of the Rosetta mission. It is expected that Wirtanen is very weak during the first encounter. The main purpose is the discussion of the different features of the plasma environment, such as the structured cycloidal plasma tail and non-LINEAR Mach cones typical for weak comets and their relation to structures like shocklets, bow shock, diamagnetic cavity and the “classical” magnetotail found at stronger comets. Furthermore, the sensitivity of these various features in dependence on the plasma parameters is investigated.