从第三和第四帕克太阳能探针遇到的小磁通绳的检测

论文标题

从第三和第四帕克太阳能探针遇到的小磁通绳的检测

Detection of small magnetic flux ropes from the third and fourth Parker Solar Probe encounters

论文作者

Zhao, L. -L., Zank, G. P., Hu, Q., Telloni, D., Chen, Y., Adhikari, L., Nakanotani, M., Kasper, J. C., Huang, J., Bale, S. D., Korreck, K. E., Case, A. W., Stevens, M., Bonnell, J. W., de Wit, T. Dudok, Goetz, K., Harvey, P. R., MacDowall, R. J., Malaspina, D. M., Pulupa, M., Larson, D. E., Livi, R., Whittlesey, P., Klein, K. G., Raouafi, N. E.

论文摘要

我们使用来自Parker太阳能探头的第三和第四轨道的数据系统地，系统地搜索太阳风中的磁通绳结构，到达0.13 au的太阳的最接近距离。我们扩展了以前的基于磁性螺旋的技术，以识别磁通绳结构。改进了该方法以结合方位角流，随着航天器接近太阳，该方法变得更大。在第三次（21天）和帕克太阳能探头的第三次（21天）和第四（17天）轨道中，总共确定了21和34个磁通绳。我们提供了确定的结构的统计分析，包括它们与流媒体带和地球层交叉的关系。

We systematically search for magnetic flux rope structures in the solar wind to within the closest distance to the Sun of 0.13 AU, using data from the third and fourth orbits of the Parker Solar Probe. We extend our previous magnetic helicity based technique of identifying magnetic flux rope structures. The method is improved upon to incorporate the azimuthal flow, which becomes larger as the spacecraft approaches the Sun. A total of 21 and 34 magnetic flux ropes are identified during the third (21 days period) and fourth (17 days period) orbits of the Parker Solar Probe, respectively. We provide a statistical analysis of the identified structures, including their relation to the streamer belt and heliospheric current sheet crossing.

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