PROPERTIES OF SHORT-WAVELENGTH OBLIQUE ALFVEN AND SLOW WAVES
文献类型：期刊论文
| 作者 | Zhao, J. S.1,2,3; Voitenko, Y.4; Yu, M. Y.5,6,7; Lu, J. Y.8; Wu, D. J.1 |
| 刊名 | ASTROPHYSICAL JOURNAL
 |
| 出版日期 | 2014-10-01 |
| 卷号 | 793期号:2页码:0 |
| 关键词 | magnetohydrodynamics (MHD) plasmas solar wind turbulence waves |
| ISSN号 | 0004-637X |
| 英文摘要 | Linear properties of kinetic Alfven waves (KAWs) and kinetic slow waves (KSWs) are studied in the framework of two-fluid magnetohydrodynamics. We obtain the wave dispersion relations that are valid in a wide range of the wave frequency. and plasma-to-magnetic pressure ratio beta. The KAW frequency can reach and exceed the ion-cyclotron frequency at ion kinetic scales, whereas the KSW frequency remains sub-cyclotron. At beta similar to 1, the plasma and magnetic pressure perturbations of both modes are in anti-phase, so that there is nearly no total pressure perturbations. However, these modes also exhibit several opposite properties. At high beta, the electric polarization ratios of KAWs and KSWs are opposite at the ion gyroradius scale, where KAWs are polarized in the sense of electron gyration (right-hand polarized) and KSWs are left-hand polarized. The magnetic helicity sigma similar to 1 for KAWs and sigma similar to -1 for KSWs, and the ion Alfven ratio R-Ai << 1 for KAWs and R-Ai >> 1 for KSWs. We also found transition wavenumbers where KAWs change their polarization from left-handed to right-handed. These new properties can be used to discriminate KAWs and KSWs when interpreting kinetic-scale electromagnetic fluctuations observed in various solar-terrestrial plasmas. This concerns, in particular, identification of modes responsible for kinetic-scale pressure-balanced fluctuations and turbulence in the solar wind. |
| WOS标题词 | Science & Technology ; Physical Sciences |
| 类目[WOS] | Astronomy & Astrophysics |
| 研究领域[WOS] | Astronomy & Astrophysics |
| 关键词[WOS] | SOLAR-WIND TURBULENCE ; LOW-FREQUENCY WAVES ; MAGNETIC HELICITY ; PLASMA ; FLUCTUATIONS ; MODE ; COMPRESSIBILITY ; POLARIZATION ; EXCITATION ; PARALLEL |
| 收录类别 | SCI |
| 原文出处 | 10.1088/0004-637X/793/2/107 |
| 语种 | 英语 |
| WOS记录号 | WOS:000341965300038 |
| 公开日期 | 2014-11-20 |
| 源URL | [http://libir.pmo.ac.cn/handle/332002/10635]  |
| 专题 | 紫金山天文台_太阳和太阳系等离子体研究团组 |
| 作者单位 | 1.Chinese Acad Sci, Purple Mt Observ, Nanjing 210008, Jiangsu, Peoples R China 2.Chinese Acad Sci, Natl Astron Observ, Key Lab Solar Act, Beijing 100012, Peoples R China 3.Nanjing Univ, Key Lab Modern Astron & Astrophys, Nanjing 210093, Jiangsu, Peoples R China 4.Belgian Inst Space Aeron, Space Phys Div, Solar Terr Ctr Excellence, B-1180 Brussels, Belgium 5.Zhejiang Univ, Inst Fus Theory & Simulat, Hangzhou 310027, Zhejiang, Peoples R China 6.Zhejiang Univ, Dept Phys, Hangzhou 310027, Zhejiang, Peoples R China 7.Ruhr Univ Bochum, Inst Theoret Phys 1, D-44780 Bochum, Germany 8.Nanjing Univ Informat Sci & Technol, Coll Math & Stat, Nanjing 210044, Jiangsu, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhao, J. S.,Voitenko, Y.,Yu, M. Y.,et al. PROPERTIES OF SHORT-WAVELENGTH OBLIQUE ALFVEN AND SLOW WAVES[J]. ASTROPHYSICAL JOURNAL,2014,793(2):0. |
| APA | Zhao, J. S.,Voitenko, Y.,Yu, M. Y.,Lu, J. Y.,&Wu, D. J..(2014).PROPERTIES OF SHORT-WAVELENGTH OBLIQUE ALFVEN AND SLOW WAVES.ASTROPHYSICAL JOURNAL,793(2),0. |
| MLA | Zhao, J. S.,et al."PROPERTIES OF SHORT-WAVELENGTH OBLIQUE ALFVEN AND SLOW WAVES".ASTROPHYSICAL JOURNAL 793.2(2014):0. |
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。