标题： 混合源区域在磁开关反向斑块中的重离子诊断推断的特征 显示英文标题

标题： Mixed Source Region Signatures Inside Magnetic Switchback Patches Inferred by Heavy Ion Diagnostics

摘要： 自帕克太阳探测器（Parker）首次近日点通过太阳以来，在整个任务期间，靠近太阳处已经观测到以块状形式聚集的高振幅阿尔芬波。 对于这些磁性切换块的形成过程，已经提出了几种可能的机制，但尚未达成明确共识。 为了深入了解它们的形成，我们研究了帕克第11次近日点通过期间附近几个相邻磁性切换块的重离子特性，并利用与太阳轨道器的航天器排布，其中每个航天器在大范围的经度上采样相同的太阳风流。 与风的日冕起源相关的重离子特性（Fe/O，C$^{6+}$/C$^{5+}$，O$^{7+}$/O$^{6+}$），由太阳轨道器测量，可以与帕克在太阳附近识别的切换块结构联系起来。 我们发现，切换块并不包含与周围非切换块太阳风不同的独特离子和元素组成特征。 这些块和周围风都表现出快速和慢速风的多种特性，表明日冕源附近存在具有开放和闭合磁场线的区域。 这些观测和建模表明，切换块形成于日冕洞边界风中，并且具有各种来源区域的磁性和热力特性。 此外，重离子特征表明，交换重新连接和/或剪切驱动的过程可能在其形成中起作用。 显示英文摘要

摘要： Since Parker Solar Probe's (Parker's) first perihelion pass at the Sun, large amplitude Alfv\'en waves grouped in patches have been observed near the Sun throughout the mission. Several formation processes for these magnetic switchback patches have been suggested with no definitive consensus. To provide insight to their formation, we examine the heavy ion properties of several adjacent magnetic switchback patches around Parker's 11th perihelion pass capitalizing on a spacecraft lineup with Solar Orbiter where each samples the same solar wind streams over a large range of longitudes. Heavy ion properties (Fe/O, C$^{6+}$/C$^{5+}$, O$^{7+}$/O$^{6+}$) related to the wind's coronal origin, measured with Solar Orbiter can be linked to switchback patch structures identified near the Sun with Parker. We find that switchback patches do not contain distinctive ion and elemental compositional signatures different than the surrounding non-switchback solar wind. Both the patches and ambient wind exhibit a range of fast and slow wind qualities, indicating coronal sources with open and closed field lines in close proximity. These observations and modeling indicate switchback patches form in coronal hole boundary wind and with a range of source region magnetic and thermal properties. Furthermore, the heavy ion signatures suggest interchange reconnection and/or shear driven processes may play a role in their creation.