论文标题
等离子体羽流对白天磁重新连接的仿真
Simulation of plasmaspheric plume impact on dayside magnetic reconnection
论文作者
论文摘要
在磁性强的时期，来自等离子球的冷致密血浆通常形成羽流向日期磁粘附，最终达到它。在这项工作中，我们提出了一个大尺度的二维完全动力学粒子中的模拟，对被传播的等离子体羽流命中的重新连接的磁性磁束。该仿真的设计使其经历四个不同的阶段：初始不稳定状态，羽流到达磁磁带之前的稳态，一旦羽流被很好地吞没在重新连接位点，羽状相互作用和稳态。我们显示了经过流入血浆的修饰的磁磁动力学的演变。我们的主要结果是，等离子温度的变化（羽流中的冷质子）对磁重新连接速率没有影响，磁重新连接速率平均仅取决于撞击之前，之中和之后的磁场和总离子密度。
During periods of strong magnetic activity, cold dense plasma from the plasmasphere typically forms a plume extending towards the dayside magnetopause, eventually reaching it. In this work, we present a large-scale two-dimensional fully kinetic Particle-In-Cell simulation of a reconnecting magnetopause hit by a propagating plasmaspheric plume. The simulation is designed so that it undergoes four distinct phases: initial unsteady state, steady state prior to plume arrival at the magnetospause, plume interaction and steady state once the plume is well engulfed in the reconnection site. We show the evolution of the magnetopause's dynamics subjected to the modification of the inflowing plasma. Our main result is that the change in the plasma temperature (cold protons in the plume) have no effects on the magnetic reconnection rate, which on average depends only on the inflowing magnetic field and total ion density, before, during and after the impact.
