Switchbacks as signatures of magnetic flux ropes generated by interchange reconnection in the corona
Switchbacks as signatures of magnetic flux ropes generated by interchange reconnection in the corona
复制标题
DOI：
10.1051/0004-6361/202039432
复制
发表时间：
2021-06-02
影响因子：
6.5
通讯作者：
Velli, M.
中科院分区：
文献类型：
--
作者：
Drake, J. F.;Agapitov, O.;Velli, M.
在日冕大气重联过程中注入太阳风的磁通量绳的结构进行了探讨与粒子在细胞模拟和比较的磁“之字形”从帕克太阳探测器的现场测量。我们认为，多x线之间的重新连接在日冕中的开放和封闭的通量注入通量绳到太阳风，这些通量绳对流向外长距离的侵蚀之前，由于重新连接。探索太阳风中通量绳的磁结构的模拟再现了之字形观测的以下关键特征：径向磁场向横向方向的快速旋转，这是与强引导场重联的结果;以及逆转径向场分量的潜力。讨论了日冕大气中注入大量通量绳对了解太阳风产生的潜在影响。
The structure of magnetic flux ropes injected into the solar wind during reconnection in the coronal atmosphere is explored with particle-in-cell simulations and compared with in situ measurements of magnetic "switchbacks" from the Parker Solar Probe. We suggest that multi-x-line reconnection between open and closed flux in the corona injects flux ropes into the solar wind and that these flux ropes convect outward over long distances before eroding due to reconnection. Simulations that explore the magnetic structure of flux ropes in the solar wind reproduce the following key features of the switchback observations: a rapid rotation of the radial magnetic field into the transverse direction, which is a consequence of reconnection with a strong guide field; and the potential to reverse the radial field component. The potential implication of the injection of large numbers of flux ropes in the coronal atmosphere for understanding the generation of the solar wind is discussed.