THREE-DIMENSIONAL KINETIC-MHD MODEL OF THE GLOBAL HELIOSPHERE WITH THE HELIOPAUSE-SURFACE FITTING
THREE-DIMENSIONAL KINETIC-MHD MODEL OF THE GLOBAL HELIOSPHERE WITH THE HELIOPAUSE-SURFACE FITTING
复制标题
具有日球层顶表面拟合的全球日球层三维动力学-MHD模型
DOI：
10.1088/0067-0049/220/2/32
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发表时间：
2015
期刊：
影响因子：
--
通讯作者：
D. Alexashov
中科院分区：
文献类型：
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作者：
V. Izmodenov;D. Alexashov
本文提供了一个详细的描述，我们的太阳风（SW）与本地星际介质（LISM）的相互作用模型的最新版本。该模型已用于分析Lyα吸收谱和太阳和日光层观测/SWAN数据。Katushkina等人（本期）使用模型结果分析IBEX-Lo数据。与此同时，这一模式的细节尚未公布。这是一个三维（3D）动力学-磁流体动力学（MHD）模型，考虑了SW和星际等离子体（包括SW中的α粒子和LISM中的氦离子），太阳和星际磁场以及星际氢原子。在模型中还考虑了SW的纬度依赖性和星际气体相对于太阳的实际流动方向。非常重要的是，我们的数值代码是以这样一种方式开发的，即在模型中不允许任何数值扩散或重新连接穿过太阳风层顶。日光层电流片在理想磁流体力学中是一个旋转不连续的，可以用运动学的方法来处理。在本文中，我们特别关注的日光层磁场的影响和太阳纬度的依赖SW。
This paper provides a detailed description of the latest version of our model of the solar wind (SW) interaction with the local interstellar medium (LISM). This model has already been applied to the analysis of Lyα absorption spectra toward nearby stars and for analyses of Solar and Heliospheric Observatory/SWAN data. Katushkina et al. (this issue) used the model results to analyze IBEX-Lo data. At the same time, the details of this model have not yet been published. This is a three-dimensional (3D) kinetic-magnetohydrodynamical (MHD) model that takes into account SW and interstellar plasmas (including α particles in SW and helium ions in LISM), the solar and interstellar magnetic fields, and interstellar hydrogen atoms. The latitudinal dependence of SW and the actual flow direction of the interstellar gas with respect to the Sun are also taken into account in the model. It was very essential that our numerical code was developed in such a way that any numerical diffusion or reconnection across the heliopause were not allowed in the model. The heliospheric current sheet is a rotational discontinuity in the ideal MHD and can be treated kinematically. In the paper, we focus in particular on the effects of the heliospheric magnetic field and on the heliolatitudinal dependence of SW.