标题： 日冕洞连接的磁拓扑结构 显示英文标题

标题： Magnetic Topology of Coronal Hole Linkages

摘要： 在最近的工作中，Antiochos 和合作者认为，太阳上开放场和封闭场区域之间的边界可以非常复杂，有狭窄的开放通量走廊连接看似不相连的日冕洞与主要极区洞，这些走廊可能是缓慢太阳风的来源。 我们详细研究了这种磁配置的拓扑结构，使用了一个解析源表面模型，该模型允许以任意分辨率分析磁场。 我们的分析揭示了三个重要的新结果：首先，日冕洞边界可以稳定地连接到寄生极性区域的分隔边界。 其次，一个单独的寄生极性区域可以在日冕中产生多个零点，并且更重要的是，连接这些点的分离线。 已知这样的拓扑结构对于磁重联非常有利，因为它们允许这一过程在整个分离线长度上发生，而不是被限制在零点周围的较小区域。 最后，日冕洞不是通过有限宽度的开放场走廊连接的，而是通过一条与寄生极性区域的分隔足印重合的奇异线连接的。 我们研究了上述拓扑特征如何响应寄生极性区域的运动而演变。 讨论了我们的结果对缓慢太阳风来源以及日冕和日球层观测的影响。 显示英文摘要

摘要： In recent work, Antiochos and coworkers argued that the boundary between the open and closed field regions on the Sun can be extremely complex with narrow corridors of open flux connecting seemingly disconnected coronal holes from the main polar holes, and that these corridors may be the sources of the slow solar wind. We examine, in detail, the topology of such magnetic configurations using an analytical source surface model that allows for analysis of the field with arbitrary resolution. Our analysis reveals three important new results: First, a coronal hole boundary can join stably to the separatrix boundary of a parasitic polarity region. Second, a single parasitic polarity region can produce multiple null points in the corona and, more important, separator lines connecting these points. It is known that such topologies are extremely favorable for magnetic reconnection, because they allow this process to occur over the entire length of the separators rather than being confined to a small region around the nulls. Finally, the coronal holes are not connected by an open-field corridor of finite width, but instead are linked by a singular line that coincides with the separatrix footprint of the parasitic polarity. We investigate how the topological features described above evolve in response to the motion of the parasitic polarity region. The implications of our results for the sources of the slow solar wind and for coronal and heliospheric observations are discussed.