标题： 准分隔层上的磁重联作为普遍存在的活动区外流的驱动因素 显示英文标题

标题： Magnetic Reconnection along Quasi-Separatrix Layers as a Driver of Ubiquitous Active Region Outflows

摘要： Hinode的极紫外线成像光谱仪（EIS）发现活动区（ARs）普遍存在速度从几公里每秒到50公里每秒的外流。 这些外流在活动区边界最为显著，并且出现在单极磁区。 它们与强烈的非热线宽展相关联，并且在较热的极紫外线（EUV）谱线中更为强烈。 这些外流至少持续数天。 通过结合Hinode EIS和X射线望远镜对活动区10942的观测数据以及磁场建模，我们证明这些外流起源于磁场拓扑结构中的特定位置，即磁场线显示强磁连接梯度的地方，具体来说是准分离层（QSLs），或者在理想情况下为无限薄的QSLs时，称为分离面。 我们发现最强的活动区外流位于强磁场区域上方的QSL段附近。 我们认为，在分离活动区闭合磁场线与大尺度外部连接或“开放”磁场线的QSL处发生的磁重联，是一种可能驱动活动区外流的机制，而这些外流可能是缓慢太阳风的潜在来源。 显示英文摘要

摘要： Hinode's EUV Imaging Spectrometer (EIS) has discovered ubiquitous outflows of a few to 50 km/sec from active regions (ARs). These outflows are most prominent at the AR boundary and appear over monopolar magnetic areas. They are linked to strong non-thermal line broadening and are stronger in hotter EUV lines. The outflows persist for at least several days. Using Hinode EIS and X-Ray Telescope observations of AR 10942 coupled with magnetic modeling, we demonstrate that the outflows originate from specific locations of the magnetic topology where field lines display strong gradients of magnetic connectivity, namely quasi-separatrix layers (QSLs), or in the limit of infinitely thin QSLs, separatrices. We found the strongest AR outflows to be in the vicinity of QSL sections located over areas of strong magnetic field. We argue that magnetic reconnection at QSLs separating closed field lines of the AR and either large-scale externally connected or `open' field lines is a viable mechanism for driving AR outflows which are likely sources of the slow solar wind.