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题名: Polarization properties of low frequency electromagnetic cyclotron waves associated with magnetic clouds
作者: Zhao, G. Q.; Feng, H. Q.; Wu, D. J.; Huang, J.
刊名: ASTROPHYSICS AND SPACE SCIENCE
出版日期: 2018
卷号: 363, 期号:3, 页码:49
英文摘要: Recent studies have revealed that there are a large number of low frequency electromagnetic cyclotron waves (ECWs) occurring in and around magnetic clouds (MCs) that are common magnetic structures in interplanetary space. Using magnetic field data from the STEREO spacecraft, this paper investigates polarization properties of ECWs associated with 120 MCs. Results show that the ECWs are highly transverse, strongly polarized waves with large ellipticities. Specifically, almost all of the waves take place with the ratios of transverse power to total power higher than 0.94, polarization degrees greater than 0.85, and ellipticities larger than 0.5. The mean values of these quantities can be up to 0.99, 0.96, 0.85, respectively. In particular, there is a tendency of ellipticities decreasing with respect to the wave normal angles for ECWs with left handed polarization. The decreasing tendency is consistent with the recent theory and simulation results.
语种: 英语
WOS记录号: WOS:000426605200012
Citation statistics:
内容类型: 期刊论文
URI标识: http://libir.pmo.ac.cn/handle/332002/18050
Appears in Collections:太阳和太阳系等离子体研究团组_期刊论文

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