论文标题
在黑子灯桥上检测最强磁场
Detection of the strongest magnetic field in a sunspot light bridge
论文作者
论文摘要
传统上，太阳上最强的磁场是在黑子遮阳篷中测量的。然而，最近，在带有Evershed and Fileshedshed流的末端测量了更强的田地。还报告了一个浅桥，分隔了相反的极性。我们旨在使用先进的反转技术准确地确定轻桥中最强磁场的优势并研究其详细结构。我们分析了从船上的光谱仪的观察结果。活性区域AR 11967的Hinode航天器。热力学和磁性构型是通过使用允许多个高度节点的反转方案反转stokes曲线来获得的。使用传统的1D反转技术和所谓的2D耦合反转，这些反转考虑了Hinode望远镜的点扩散函数。我们发现一个紧凑的结构，面积为32.7 Arcsec $^2 $，内部的田间强度超过5 kg，这证实了文献中报道的这条灯桥的强场。与$ \ sim $ 5 km s $^{ - 1} $ harbour田地优势大于6.5公斤的两个区域相关，总面积为2.97 arcsec $^2 $。发现的最大场强度为8.2千克，这是到现在为止双极灯桥上有史以来最大的田间。
Traditionally, the strongest magnetic fields on the Sun have been measured in sunspot umbrae. More recently, however, much stronger fields have been measured at the ends of penumbral filaments carrying the Evershed and counter-Evershed flows. Superstrong fields have also been reported within a light bridge separating two umbrae of opposite polarities. We aim to accurately determine the strengths of the strongest fields in a light bridge using an advanced inversion technique and to investigate their detailed structure. We analyze observations from the spectropolarimeter on board the Hinode spacecraft of the active region AR 11967. The thermodynamic and magnetic configurations are obtained by inverting the Stokes profiles using an inversion scheme that allows multiple height nodes. Both the traditional 1D inversion technique and the so-called 2D coupled inversions, which take into account the point spread function of the Hinode telescope, are used. We find a compact structure with an area of 32.7 arcsec$^2$ within a bipolar light bridge with field strengths exceeding 5 kG, confirming the strong fields in this light bridge reported in the literature. Two regions associated with downflows of $\sim$5 km s$^{-1}$ harbor field strengths larger than 6.5 kG, covering a total area of 2.97 arcsec$^2$. The maximum field strength found is 8.2 kG, which is the largest ever observed field in a bipolar light bridge up to now.
