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首页> 外文期刊>PASJ: Publications of the Astronomical Society of Japan >Structural properties of the solar flare-producing coronal current system developed in an emerging magnetic flux tube
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Structural properties of the solar flare-producing coronal current system developed in an emerging magnetic flux tube

机译：在新出现的磁通管中产生的太阳耀斑产生冠状电流系统的结构性

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The activity of a magnetic structure formed in the solar corona depends on a coronal current system developed in the structure, which determines how an electric current flows in the corona. To investigate structural properties of the coronal current system responsible for producing a solar flare, we perform magnetohydrodynamic simulation of an emerging magnetic flux tube which forms a coronal magnetic structure. Investigation using fractal dimensional analysis and electric current streamlines reveals that the flare-producing coronal current system relies on a specific coronal current structure of two-dimensional spatiality, which has a sub-region where a nearly anti-parallel magnetic field configuration is spontaneously generated. We discuss the role of this locally generated anti-parallel magnetic field configuration in causing the reconnection of a three-dimensional magnetic field, which is a possible mechanism for producing a flare. We also discuss how the twist of a magnetic flux tube affects structural properties of a coronal current system, showing how much volume current flux is carried into the corona by an emerging flux tube. This gives a way to evaluate the activity of a coronal magnetic structure.
机译：日冕中形成的磁结构的活动取决于该结构中形成的日冕电流系统，该系统决定了电流如何在日冕中流动。为了研究负责产生太阳耀斑的日冕流系统的结构特性，我们对一个形成日冕磁结构的新兴磁通管进行了磁流体动力学模拟。利用分形维数分析和电流流线进行的研究表明，产生耀斑的日冕电流系统依赖于一个特定的二维空间日冕电流结构，该结构有一个子区域，其中自发产生了一个几乎反平行的磁场结构。我们讨论了这种局部产生的反平行磁场结构在引起三维磁场重联中的作用，这是产生耀斑的一种可能机制。我们还讨论了磁通管的扭曲如何影响日冕电流系统的结构特性，显示了有多少体积电流通量被新兴磁通管带入日冕。这提供了一种评估日冕磁结构活动的方法。

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