Active Region Modulation of Coronal Hole Solar Wind
Active Region Modulation of Coronal Hole Solar Wind
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DOI：
10.3847/1538-4357/ab5586
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发表时间：
2019-12
期刊：
影响因子：
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通讯作者：
A. Macneil;C. Owen;D. Baker;D. Brooks;L. Harra;D. Long;R. Wicks
中科院分区：
文献类型：
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作者：
A. Macneil;C. Owen;D. Baker;D. Brooks;L. Harra;D. Long;R. Wicks
活跃区（ARs）是缓慢太阳风（SW）的一个候选来源，其起源是一个正在进行的研究课题。我们提出了一个案例研究，该研究检查了在SW源附近存在AR时SW被调制的过程。我们比较了与日冕洞(CH) -安静太阳边界相关的西南偏南的性质，以及与同一个CH但卡灵顿旋转相关的西南偏南，当该区域与新出现的NOAA AR 12532相邻时。在源区测绘和遥感观测的背景下，比较这些旋转之间在一系列现场参数中发现的差异。SW的结构和组成发生了明显的变化，我们认为这是由于AR对来自CH边界的SW产生的影响。这些独特的观察结果表明，与最初安静的太阳情况相比，在SW产生期间，ar相关风中出现的特征与交换重连接的增加是一致的。
Active regions (ARs) are a candidate source of the slow solar wind (SW), the origins of which are a topic of ongoing research. We present a case study that examines the processes by which SW is modulated in the presence of an AR in the vicinity of the SW source. We compare properties of SW associated with a coronal hole (CH)–quiet Sun boundary to SW associated with the same CH but one Carrington rotation later, when this region bordered the newly emerged NOAA AR 12532. Differences found in a range of in situ parameters are compared between these rotations in the context of source region mapping and remote sensing observations. Marked changes exist in the structure and composition of the SW, which we attribute to the influence of the AR on SW production from the CH boundary. These unique observations suggest that the features that emerge in the AR-associated wind are consistent with an increased occurrence of interchange reconnection during SW production, compared with the initial quiet Sun case.