中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
Time-dependent Occurrence Rate of Electromagnetic Cyclotron Waves in the Solar Wind: Evidence for the Effect of Alpha Particles?

文献类型:期刊论文

作者Zhao, G. Q.1,2; Feng, H. Q.1; Wu, D. J.3; Chu, Y. H.4; Huang, J.2
刊名ASTROPHYSICAL JOURNAL LETTERS
出版日期2017-09-20
卷号847期号:1页码:4
关键词interplanetary medium instabilities solar wind waves
ISSN号2041-8205
DOI10.3847/2041-8213/aa88b3
英文摘要

Previous studies revealed that electromagnetic cyclotron waves (ECWs) near the proton cyclotron frequency exist widely in the solar wind, and the majority of ECWs are left-handed (LH) polarized waves. Using the magnetic field data from the STEREO mission, this Letter carries out a survey of ECWs over a long period of 7 years and calculates the occurrence rates of ECWs with different polarization senses. Results show that the occurrence rate is nearly a constant for the ECWs with right-handed polarization, but it varies significantly for the ECWs with LH polarization. Further investigation of plasma conditions reveals that the LH ECWs take place preferentially in a plasma characterized by higher temperature, lower density, and larger velocity. Some considerable correlations between the occurrence rate of LH ECWs and the properties of ambient plasmas are discussed. The present research may provide evidence for the effect of alpha particles on the generation of ECWs.

WOS关键词PROTON/PROTON INSTABILITIES ; STREAM INTERFACES ; STEREO ; PLASMA ; 0.3-AU ; 1-AU
WOS研究方向Astronomy & Astrophysics
语种英语
WOS记录号WOS:000411314100002
出版者IOP PUBLISHING LTD
源URL[http://libir.pmo.ac.cn/handle/332002/22712]  
专题中国科学院紫金山天文台
通讯作者Zhao, G. Q.
作者单位1.Luoyang Normal Univ, Inst Space Phys, Luoyang, Peoples R China
2.Natl Astron Observ, CAS Key Lab Solar Act, Beijing, Peoples R China
3.Chinese Acad Sci, Purple Mt Observ, Nanjing, Jiangsu, Peoples R China
4.Natl Cent Univ, Inst Space Sci, Chungli, Taiwan
推荐引用方式
GB/T 7714
Zhao, G. Q.,Feng, H. Q.,Wu, D. J.,et al. Time-dependent Occurrence Rate of Electromagnetic Cyclotron Waves in the Solar Wind: Evidence for the Effect of Alpha Particles?[J]. ASTROPHYSICAL JOURNAL LETTERS,2017,847(1):4.
APA Zhao, G. Q.,Feng, H. Q.,Wu, D. J.,Chu, Y. H.,&Huang, J..(2017).Time-dependent Occurrence Rate of Electromagnetic Cyclotron Waves in the Solar Wind: Evidence for the Effect of Alpha Particles?.ASTROPHYSICAL JOURNAL LETTERS,847(1),4.
MLA Zhao, G. Q.,et al."Time-dependent Occurrence Rate of Electromagnetic Cyclotron Waves in the Solar Wind: Evidence for the Effect of Alpha Particles?".ASTROPHYSICAL JOURNAL LETTERS 847.1(2017):4.

入库方式: OAI收割

来源:紫金山天文台

浏览0
下载0
收藏0
其他版本

除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。