Modeling the Jovian magnetosphere under an antiparallel interplanetary magnetic field from a global MHD simulation
Modeling the Jovian magnetosphere under an antiparallel interplanetary magnetic field from a global MHD simulation
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DOI：
10.26464/epp2018028
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发表时间：
2018-07
影响因子：
2.9
通讯作者：
Yuxian Wang;Xiaocheng Guo;B. Tang;Wenya Li;Chi Wang
中科院分区：
文献类型：
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作者：
Yuxian Wang;Xiaocheng Guo;B. Tang;Wenya Li;Chi Wang
我们提出了新的木星磁层全球磁流体动力学（MHD）模拟模型的初步结果。该模型结合了木星卫星 Io 的质量载荷、木星的快速共转以及磁层和电离层之间的静电耦合（M-I 耦合）。 The basic configuration of the Jovian magnetosphere including the equatorial plasma flow pattern, the corotation enforcement current system, and the field aligned currents (FACs) in the ionosphere are presented under an antiparallel interplanetary magnetic field (IMF) condition.赤道密度和压力剖面的模拟模型结果与基于数据的经验模型的结果一致。还发现电离层中的FACs分布与观测到的极光特征之间存在相似之处，显示了简单电离层模型在复杂的M-I耦合中的潜在应用。该模型将有助于加深我们对木星磁层全球动态的理解。
We present preliminary results of a new global Magnetohydrodynamics (MHD) simulation model of the Jovian magnetosphere. The model incorporates mass loading from Jupiter's satellite Io, the planet's fast corotation, and electrostatic coupling between its magnetosphere and ionosphere (M‐I coupling). The basic configuration of the Jovian magnetosphere including the equatorial plasma flow pattern, the corotation enforcement current system, and the field aligned currents (FACs) in the ionosphere are presented under an antiparallel interplanetary magnetic field (IMF) condition. The simulation model results for equatorial density and pressure profiles are consistent with results from data‐based empirical models. It is also found that there are similarities between the FACs distribution in the ionosphere and the observed aurora features, showing the potential application of the simple ionospheric model to the complicated M‐I coupling. This model will help deepen our understanding of the global dynamics of the Jovian magnetosphere.