Effects of Alpha-Proton Differential Flow on Proton Temperature Anisotropy Instabilities in the Solar Wind: Wind Observations
文献类型：期刊论文
| 作者 | Zhao, G. Q.4,5; Li, H.2,3; Feng, H. Q.5; Wu, D. J.1; Li, H. B.5; Zhao, A.5 |
| 刊名 | ASTROPHYSICAL JOURNAL
 |
| 出版日期 | 2019-10-10 |
| 卷号 | 884期号:1页码:6 |
| ISSN号 | 0004-637X |
| 关键词 | instabilities interplanetary medium solar wind waves |
| DOI | 10.3847/1538-4357/ab3d35 |
| 通讯作者 | Zhao, G. Q.() |
| 英文摘要 | Plasma kinetic waves and alpha-proton differential flow are two important subjects on the topic of solar wind evolution. Based on the Wind data during 2005-2015, this paper reports that the occurrence of electromagnetic cyclotron waves (ECWs) near the proton cyclotron frequency significantly depends on the direction of alphaproton differential flow V-d. As V-d rotates from the anti-Sunward direction to the Sunward direction, the occurrence rate of ECWs as well as the percentage of left-handed (LH) polarized ECWs decreases considerably. In particular, it is shown that the dominant polarization changes from LH polarization to right-handed polarization during the rotation. The investigation on proton and alpha particle parameters ordered by the direction of V-d further illustrates that large kinetic energies of alpha-proton differential flow correspond to high occurrence rates of ECWs. These results are consistent with theoretical predictions for effects of alpha-proton differential flow on proton temperature anisotropy instabilities. |
| WOS关键词 | CYCLOTRON HARMONIC RESONANCES ; CORONAL HOLES ; WAVES ; HELIUM ; DRIVEN ; IONS ; MAGNETOSHEATH ; ACCELERATION ; GENERATION ; STEREO |
| WOS研究方向 | Astronomy & Astrophysics |
| 语种 | 英语 |
| 出版者 | IOP PUBLISHING LTD |
| WOS记录号 | WOS:000501620100005 |
| 源URL | [http://libir.pmo.ac.cn/handle/332002/35291]  |
| 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.Chinese Acad Sci, Purple Mt Observ, Nanjing, Jiangsu, Peoples R China 2.Univ Chinese Acad Sci, Beijing, Peoples R China 3.Chinese Acad Sci, Natl Space Sci Ctr, State Key Lab Space Weather, Beijing, Peoples R China 4.Henan Key Lab Electromagnet Transformat & Detect, Luoyang, Peoples R China 5.Luoyang Normal Univ, Inst Space Phys, Luoyang, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhao, G. Q.,Li, H.,Feng, H. Q.,et al. Effects of Alpha-Proton Differential Flow on Proton Temperature Anisotropy Instabilities in the Solar Wind: Wind Observations[J]. ASTROPHYSICAL JOURNAL,2019,884(1):6. |
| APA | Zhao, G. Q.,Li, H.,Feng, H. Q.,Wu, D. J.,Li, H. B.,&Zhao, A..(2019).Effects of Alpha-Proton Differential Flow on Proton Temperature Anisotropy Instabilities in the Solar Wind: Wind Observations.ASTROPHYSICAL JOURNAL,884(1),6. |
| MLA | Zhao, G. Q.,et al."Effects of Alpha-Proton Differential Flow on Proton Temperature Anisotropy Instabilities in the Solar Wind: Wind Observations".ASTROPHYSICAL JOURNAL 884.1(2019):6. |
入库方式： OAI收割
来源：紫金山天文台
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