VOYAGER OBSERVATIONS OF MAGNETIC SECTORS AND HELIOSPHERIC CURRENT SHEET CROSSINGS IN THE OUTER HELIOSPHERE
VOYAGER OBSERVATIONS OF MAGNETIC SECTORS AND HELIOSPHERIC CURRENT SHEET CROSSINGS IN THE OUTER HELIOSPHERE
复制标题
航海者号对外日球层磁区和日球层电流片交叉点的观测
DOI：
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发表时间：
2016
期刊：
影响因子：
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通讯作者：
M. Opher
中科院分区：
文献类型：
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作者：
J. Richardson;L. Burlaga;J. Drake;M. Hill;M. Opher
旅行者1号（V1）已经穿过日鞘，并在本地星际介质中。旅行者2号（V2）自2007年以来一直在日鞘中。重联在日鞘中的作用仍在争论中；压缩日球层电流片（HCS）可能导致快速重连和磁场拓扑结构的重新配置。本文比较了旅行者号航天器观测每个磁扇区的预期时间和实际时间，以及穿越HCS的次数。预测值与实测值基本一致。一个例外是2008年和2009年的旅行者1号，在那里扇区的分布比预期的更均匀，HCS交叉的数量也很少。另外两个例外是2011-2012年的V1和2012年的V2，当时航天器在相反磁区的时间比预期的要少，并且看到的HCS交叉比预期的要少。这些特征与预测的重连接特征一致，因此搜索其他重连接特征时应该关注这些时间。
Voyager 1 (V1) has passed through the heliosheath and is in the local interstellar medium. Voyager 2 (V2) has been in the heliosheath since 2007. The role of reconnection in the heliosheath is under debate; compression of the heliospheric current sheets (HCS) in the heliosheath could lead to rapid reconnection and a reconfiguration of the magnetic field topology. This paper compares the expected and actual amounts of time the Voyager spacecraft observe each magnetic sector and the number of HCS crossings. The predicted and observed values generally agree well. One exception is at Voyager 1 in 2008 and 2009, where the distribution of sectors is more equal than expected and the number of HCS crossings is small. Two other exceptions are at V1 in 2011–2012 and at V2 in 2012, when the spacecraft are in the opposite magnetic sector less than expected and see fewer HCS crossings than expected. These features are consistent with those predicted for reconnection, and consequently searches for other reconnection signatures should focus on these times.