论文标题
用于计算太阳风流的固定MHD平衡的优化原理
An Optimization Principle for Computing Stationary MHD Equilibria With Solar Wind Flow
论文作者
论文摘要
在这项工作中，我们描述了一种计算固定MHD平衡的数值优化方法。新开发的代码基于非线性优化原理。我们将代码应用代码对太阳能电晕进行建模，以概要矢量磁图为边界条件。 Below about two solar radii the plasma $β$ and Alfvén Mach number $M_A$ are small and the magnetic field configuration of stationary MHD is basically identical to a nonlinear force-free field, whereas higher up in the corona (where $β$ and $M_A$ are above unity) plasma and flow effects become important and stationary MHD and force-free configuration deviate significantly.新方法允许与潜在的场，无线性力或磁静态模型相比，将冠状磁场的重建进一步向外重建。这样，该模型可能有助于提供磁连通性，以实现太阳轨道和帕克太阳能探针的遥感和原位仪器的关节观察。
In this work we describe a numerical optimization method for computing stationary MHD-equilibria. The newly developed code is based on a nonlinear force-free optimization principle. We apply our code to model the solar corona using synoptic vector magnetograms as boundary condition. Below about two solar radii the plasma $β$ and Alfvén Mach number $M_A$ are small and the magnetic field configuration of stationary MHD is basically identical to a nonlinear force-free field, whereas higher up in the corona (where $β$ and $M_A$ are above unity) plasma and flow effects become important and stationary MHD and force-free configuration deviate significantly. The new method allows the reconstruction of the coronal magnetic field further outwards than with potential field, nonlinear force-free or magneto-static models. This way the model might help to provide the magnetic connectivity for joint observations of remote sensing and in-situ instruments on Solar Orbiter and Parker Solar Probe.
