论文标题
弱扭曲和高度扭曲的磁通绳的突出结构
Prominence fine structures in weakly twisted and highly twisted magnetic flux ropes
论文作者
论文摘要
磁通绳支持许多突出。一个重要的问题是我们如何确定磁通绳是否扭曲或强烈扭曲。在本文中，我们试图检查弱扭曲和强烈扭曲的磁通绳是否能够表现出不同的特征，以便我们可以通过它们的外观区分两种类型的磁性结构。我们对具有不同曲折的两个磁通绳进行了伪三维模拟。我们发现，由此产生的两个突出在许多方面有所不同。弱扭曲的通量绳支持的突出性主要由瞬态螺纹组成，在突出的内部形成了高速流。它的角很明显。相反，由高度扭转的通量绳支撑的绳索主要由稳定的准式线螺纹组成，包括更长的独立螺纹和较短的磁性连接线。还发现，突出的脊柱偏离垂直方向的通量绳轴，以及投影在太阳表面上的光球极性反转线，尤其是对于弱扭曲的磁通绳。两种突出物的外观显着差异。还建议，在高度扭转的通量绳索中的短螺纹堆积可能是某些突出的垂直线。
Many prominences are supported by magnetic flux ropes. One important question is how we can determine whether the flux rope is weakly-twisted or strongly-twisted. In this paper, we attempted to check whether prominences supported by weakly-twisted and strongly-twisted flux ropes can manifest different features so that we might distinguish the two types of magnetic structures by their appearance. We performed pseudo three-dimensional simulations of two magnetic flux ropes with different twists. We found that the resulting two prominences differ in many aspects. The prominence supported by a weakly-twisted flux rope is composed mainly of transient threads, forming high-speed flows inside the prominence. Its horns are evident. Conversely, the one supported by a highly-twisted flux rope consists mainly of stable quasi-stationary threads, including longer independently trapped threads and shorter magnetically connected threads. It is also revealed that the prominence spine deviates from the flux rope axis in the vertical direction and from the photospheric polarity inversion line projected on the solar surface, especially for the weakly-twisted magnetic flux rope. The two types of prominences differ significantly in appearance. It is also suggested that a piling-up of short threads in highly-twisted flux ropes might account for the vertical-like threads in some prominences.
