论文标题
磁重新连接的特性和能量学：I。耀斑丝带的演变
Properties and Energetics of Magnetic Reconnection: I. Evolution of Flare Ribbons
论文作者
论文摘要
在本文中，我们从耀斑丝带的形态演化中测量了平均磁性剪切，并检查耀斑重新连接进展过程中火炬热和非热X射线排放的演化。我们分析了三个爆发耀斑和三个粘性耀斑，范围从COLS C8.0到M7.0。它们沿着磁性极性反转线（pil）表现出明确的两条丝带，并通过大气成像组件和拉马蒂高能量太阳能光谱成像仪从冲动阶段开始观察到。该分析证实了耀斑核心区域的强效剪切演化，并且随着剪切的降低，火光硬X射线发射升高。在该样品中的喷发耀斑中，明显的非热X射线发射滞后于耀斑丝带的紫外线发射，当剪切剪切不适中时，速度迅速上升。在所有耀斑中，我们观察到，当耀斑丝带沿着PIL迅速扩散并且剪切较高时，血浆温度在早期阶段升高。我们将这些结果与先前的研究进行了比较，并讨论了它们的含义以及并发症，与耀斑重新连接期间能量分配的物理机制有关。
In this article, we measure the mean magnetic shear from the morphological evolution of flare ribbons, and examine the evolution of flare thermal and non-thermal X-ray emissions during the progress of flare reconnection. We analyze three eruptive flares and three confined flares ranging from GOES class C8.0 to M7.0. They exhibit well-defined two ribbons along the magnetic polarity inversion line (PIL), and have been observed by the Atmospheric Imaging Assembly and the Ramaty High Energy Solar Spectroscopic Imager from the onset of the flare throughout the impulsive phase. The analysis confirms the strong-to-weak shear evolution in the core region of the flare, and the flare hard X-ray emission rises as the shear decreases. In eruptive flares in this sample, significant non-thermal hard X-ray emission lags the ultraviolet emission from flare ribbons, and rises rapidly when the shear is modest. In all flares, we observe that the plasma temperature rises in the early phase when the flare ribbons rapidly spread along the PIL and the shear is high. We compare these results with prior studies, and discuss their implications, as well as complications, related to physical mechanisms governing energy partition during flare reconnection.
