Generation mechanism of electrostatic solitary structures in the Earth's auroral region
文献类型：期刊论文
| 作者 | Lu, QM; Wang, DY; Wang, S
|
| 刊名 | JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS
 |
| 出版日期 | 2005-03-29 |
| 卷号 | 110期号:A3页码:A03223 |
| 关键词 | ELECTRIC-FIELD STRUCTURES PHASE-SPACE HOLES ACOUSTIC SOLITONS POLAR CUSP SATELLITE-OBSERVATIONS DOUBLE-LAYERS WAVES PLASMA NOISE MAGNETOTAIL |
| ISSN号 | 0148-0227 |
| 英文摘要 | [ 1] Satellite observations have revealed electrostatic solitary structures in the Earth's auroral region. These structures have positive electrostatic potentials and move along the ambient magnetic field. In this paper we performed one-dimensional electrostatic particle simulations of electrostatic solitary waves (ESW) in plasma composed of three electron components: cold, hot, and beam electrons. First, the nearly monochromatic electrostatic acoustic waves are excited. When the amplitude of the electron acoustic ( EA) waves is sufficiently large, part of hot and beam electrons are trapped by the electron acoustic waves. These waves coalesce each other during their nonlinear evolution, and at last the solitary structures with travel speed related to the beam velocity are formed at the quasi-equilibrium stage. These structures have positive potential signatures, and they seem to be stable. Electron density cavities for cold electron component are always accompanied with these structures. In addition, the corresponding electric fields have a bipolar structure, which has also been observed in the Earth's auroral region recently. The conditions for existence of such solitary structures are investigated through our simulations, and the comparisons between our simulated results and satellite observations in the Earth's auroral regions are also discussed. |
| WOS标题词 | Science & Technology ; Physical Sciences |
| 学科主题 | Astronomy & Astrophysics |
| 类目[WOS] | Astronomy & Astrophysics |
| 研究领域[WOS] | Astronomy & Astrophysics |
| 关键词[WOS] | ELECTRIC-FIELD STRUCTURES ; PHASE-SPACE HOLES ; ACOUSTIC SOLITONS ; POLAR CUSP ; SATELLITE-OBSERVATIONS ; DOUBLE-LAYERS ; WAVES ; PLASMA ; NOISE ; MAGNETOTAIL |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000228370400004 |
| 公开日期 | 2012-03-07 |
| 源URL | [http://159.226.72.40/handle/332002/4128]  |
| 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.Univ Sci & Technol China, Sch Earth & Space Sci, Hefei 230026, Anhui, Peoples R China 2.Chinese Acad Sci, Purple Mt Observ, Nanjing 210008, Jiangsu, Peoples R China |
| 推荐引用方式 GB/T 7714 | Lu, QM,Wang, DY,Wang, S. Generation mechanism of electrostatic solitary structures in the Earth's auroral region[J]. JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS,2005,110(A3):A03223. |
| APA | Lu, QM,Wang, DY,&Wang, S.(2005).Generation mechanism of electrostatic solitary structures in the Earth's auroral region.JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS,110(A3),A03223. |
| MLA | Lu, QM,et al."Generation mechanism of electrostatic solitary structures in the Earth's auroral region".JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS 110.A3(2005):A03223. |
入库方式： OAI收割
来源：紫金山天文台
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