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.1,2; Li,H.3,4; Feng,H. Q.1; Wu,D. J.5; Li,H. B.1; Zhao,A.1 |
| 刊名 | The Astrophysical Journal
 |
| 出版日期 | 2019-10-10 |
| 卷号 | 884期号:1 |
| ISSN号 | 0004-637X |
| 关键词 | instabilities interplanetary medium solar wind waves |
| DOI | 10.3847/1538-4357/ab3d35 |
| 英文摘要 | Abstract 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 alpha–proton differential flow . As 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 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. |
| 语种 | 英语 |
| 出版者 | The American Astronomical Society |
| WOS记录号 | IOP:0004-637X-884-1-AB3D35 |
| 源URL | [http://libir.pmo.ac.cn/handle/332002/28309]  |
| 专题 | 中国科学院紫金山天文台 |
| 作者单位 | 1.Institute of Space Physics, Luoyang Normal University, Luoyang, People's Republic of China 2.Henan Key Laboratory of Electromagnetic Transformation and Detection, Luoyang, People's Republic of China 3.State Key Laboratory of Space Weather, National Space Science Center, CAS, Beijing, People's Republic of China 4.University of Chinese Academy of Sciences, Beijing, People's Republic of China 5.Purple Mountain Observatory, CAS, Nanjing, People's Republic of 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]. The Astrophysical Journal,2019,884(1). |
| 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.The Astrophysical Journal,884(1). |
| MLA | Zhao,G. Q.,et al."Effects of Alpha–Proton Differential Flow on Proton Temperature Anisotropy Instabilities in the Solar Wind: Wind Observations".The Astrophysical Journal 884.1(2019). |
入库方式： OAI收割
来源：紫金山天文台
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