SHINE Postdoc: Extension of the Breakout Model to More 'Realistic' Coronal Mass Ejections

该项目将支持一名博士后对日冕物质抛射（cme）的3D爆发模型和用于生成数值解的工具进行重大改进。该博士后计划首次在实际观测得出的磁场环境下对突破模型进行数值磁流体动力学（MHD）模拟。他计划通过对源表面以下的场进行球面谐波展开，在初始化程序中实现势场源源磁场。然后，博士后将把这些连接到源表面上方的无力开放场解决方案中。他还打算在模拟中加入更真实的表面运动，最终目标是发展将任意光球速度和表面场变化输入日冕MHD解决方案演变的能力。这位博士后将利用专门的通量涌现计算结果来驱动他的爆发爆发模拟的边界条件，以确定爆发爆发过程实际上是否独立于用于建立所需自由磁能的特定方法。最后，该博士后希望能够通过局部相关跟踪（LCT）计算来参数化实际的太阳表面运动，以观察实际的驾驶是否可以在实际的场配置中触发CME爆发。

This project will support a postdoctoral to make major improvements to the 3D breakout model for coronal mass ejections (CMEs) and to the tools used to generate the numerical solutions. The postdoctoral intends to run numerical magnetohydrodynamic (MHD) simulations of the breakout model for the first time in magnetic field environments derived from actual observations. He plans to implement potential-field source-source magnetic fields into initialization procedures through spherical harmonic expansions for fields below the source-surface. The postdoctoral will then join these to a force-free open-field solution above the source-surface. He also intends to add more realistic surface motions to the simulations, with the ultimate goal of developing the capacity to input arbitrary photospheric velocity and surface field changes into the evolution of the coronal MHD solution. The postdoctoral will use the results of dedicated flux-emergence calculations to drive the boundary conditions of his breakout eruption simulation, in order to see if the break-out eruption process is, in fact, independent of the specific method used to build up the required free magnetic energy. Finally, the postdoctoral expects to be able to parameterize actual solar surface motions, as derived from local correlation tracking (LCT) calculations, to see if realistic driving can trigger CME eruptions in realistic field configurations.