前震turbulence引起的磁层顶重联和磁凹陷
Magnetopause reconnection and indents induced by foreshock turbulence
摘要：
基于全球混合模拟结果，我们预测前震湍流可以到达磁层顶，并导致重联以及地球大小的凹痕。在我们的模拟中，行星际磁场（IMF）和太阳风都是恒定的，因此所有的动力学都是由前震不稳定性产生的。在模拟中的IMF主要是太阳地球对齐一个弱的北向和零黎明黄昏的组成部分，这样的太阳下磁层顶重联预计没有前震湍流修改磁鞘场。我们给出了一个重联的例子来说明，湍流可以产生大的磁剪切角横跨磁层顶，诱导局部突发重联。磁层顶重联和由前震湍流的影响而产生的凹痕可能有助于行星等离子体的昼侧损失。
英文摘要：
Based on global hybrid simulation results, we predict that foreshock turbulence can reach the magnetopause and lead to reconnection as well as Earth-sized indents. Both the interplanetary magnetic field (IMF) and solar wind are constant in our simulation, and hence all dynamics are generated by foreshock instabilities. The IMF in the simulation is mostly Sun-Earth aligned with a weak northward and zero dawn-dusk component, such that subsolar magnetopause reconnection is not expected without foreshock turbulence modifying the magnetosheath fields. We show a reconnection example to illustrate that the turbulence can create large magnetic shear angles across the magnetopause to induce local bursty reconnection. Magnetopause reconnection and indents developed from the impact of foreshock turbulence can potentially contribute to dayside loss of planetary plasmas.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
