Hybrid Simulations of the Cusp and Dayside Magnetosheath Dynamics Under Quasi-Radial Interplanetary Magnetic Fields

J. Ng; L.-J. Chen; Y. OmelchenkoY. ZouB. Lavraud

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Hybrid Simulations of the Cusp and Dayside Magnetosheath Dynamics Under Quasi-Radial Interplanetary Magnetic Fields

机译：Hybrid Simulations of the Cusp and Dayside Magnetosheath Dynamics Under Quasi-Radial Interplanetary Magnetic Fields

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Under quasi-radial interplanetary magnetic fields (IMF), foreshock turbulence can have an impact on the magnetosheath and cusps depending on the location of the quasi-parallel shock. We perform three-dimensional simulations of Earth's dayside magnetosphere using the hybrid code HYPERS, and compare northward and southward quasi-radial IMF configurations. We study the magnetic field configuration, fluctuations in the magnetosheath and the plasma in the regions around the northern cusp. Under northward IMF with Earthward Bx, there is a time-varying plasma depletion layer immediately outside the northern cusp. In the southward IMF case, the impact of foreshock turbulence and high-speed jets, together with magnetopause reconnection, can lead to strong density enhancements in the cusp.

机译：在quasi-radial行星际磁场(国际货币基金组织(IMF)前震动荡会影响磁鞘和尖点根据的位置quasi-parallel冲击。地球的光面的三维模拟磁气圈使用混合的代码大卖场比较向北和向南quasi-radial货币基金组织配置。配置,在磁鞘波动和等离子体在北部地区尖端。有一个时变等离子耗尽层立即在北方的尖端。国际货币基金组织的情况下,向南前震的影响湍流和高速飞机,一起磁重联,可能导致强在尖端密度的增强。

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《Journal of Geophysical Research, A. Space Physics: JGR》 |2022年第10期|e2022JA030359-1-e2022JA030359-17|共17页
作者
J. Ng; L.-J. Chen; Y. OmelchenkoY. ZouB. Lavraud;
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作者单位

Department of Astronomy, University of Maryland, College Park, MD, USA;

NASA Goddard Space Flight Center, Greenbelt, MD, USA;

Trinum Research Inc, San Diego, CA, USADepartment of Space Science, University of Alabama in Huntsville, Huntsville, AL, USALaboratoire d'astrophysique de Bordeaux, CNRS, University Bordeaux, Pessac, France;

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中图分类空间物理;地球物理学;
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Hybrid Simulations of the Cusp and Dayside Magnetosheath Dynamics Under Quasi-Radial Interplanetary Magnetic Fields

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