Generation mechanism of the whistler-mode waves in the plasma sheet prior to magnetic reconnection
文献类型：期刊论文
| 作者 | Wei, X. H.1; Cao, J. B.2; Zhou, G. C.1; Fu, H. S.2; Santolik, O.3,4; Reme, H.5,6; Dandouras, I.5,6; Cornilleau, N.7; Fazakerley, A.8 |
| 刊名 | ADVANCES IN SPACE RESEARCH
 |
| 出版日期 | 2013-07-01 |
| 卷号 | 52期号:1页码:205-210 |
| ISSN号 | 0273-1177 |
| 关键词 | Whistler-mode waves Electron temperature anisotropy Reconnection The plasma sheet |
| 通讯作者 | 北京8701信箱 |
| 中文摘要 | The whistler-mode waves and electron temperature anisotropy play a key role prior to and during magnetic reconnection. On August 21, 2002, the Cluster spacecrafts encountered a quasi-collisionless magnetic reconnection event when they crossed the plasma sheet. Prior to the southward turning of magnetospheric magnetic field and high speed ion flow, the whistler-mode waves and positive electron temperature anisotropy are simultaneously observed. Theoretic analysis shows that the electrons with positive temperature anisotropy can excite the whistler-mode waves via cyclotron resonances. Using the data of particles and magnetic field, we estimated the whistler-mode wave growth rate and the ratio of whistler-mode growth rate to wave frequency. They are 0.0016fce (Electron cyclotron frequency) and 0.0086fce, respectively. Therefore the whistler-mode waves can grow quickly in the current sheet. The combined observations of energetic electron beams and waves show that after the southward turning of magnetic field, energetic electrons in the reconnection process are accelerated by the whistler-mode waves. |
| 英文摘要 | The whistler-mode waves and electron temperature anisotropy play a key role prior to and during magnetic reconnection. On August 21, 2002, the Cluster spacecrafts encountered a quasi-collisionless magnetic reconnection event when they crossed the plasma sheet. Prior to the southward turning of magnetospheric magnetic field and high speed ion flow, the whistler-mode waves and positive electron temperature anisotropy are simultaneously observed. Theoretic analysis shows that the electrons with positive temperature anisotropy can excite the whistler-mode waves via cyclotron resonances. Using the data of particles and magnetic field, we estimated the whistler-mode wave growth rate and the ratio of whistler-mode growth rate to wave frequency. They are 0.0016f(ce) (Electron cyclotron frequency) and 0.0086f(ce), respectively. Therefore the whistler-mode waves can grow quickly in the current sheet. The combined observations of energetic electron beams and waves show that after the southward turning of magnetic field, energetic electrons in the reconnection process are accelerated by the whistler-mode waves. (C) 2013 COSPAR. Published by Elsevier Ltd. All rights reserved. |
| 学科主题 | 空间物理 |
| 语种 | 英语 |
| 源URL | [http://ir.cssar.ac.cn/handle/122/1547]  |
| 专题 | 国家空间科学中心_空间科学部 |
| 作者单位 | 1.Chinese Acad Sci, Ctr Space Sci & Appl Res, State Key Lab Space Weather, Beijing, Peoples R China 2.Beihang Univ, Beijing 100190, Peoples R China 3.Charles Univ Prague, Inst Atmospher Phys, Acad Sci Czech Republ, Prague, Czech Republic 4.Charles Univ Prague, Fac Math & Phys, Prague, Czech Republic 5.Univ Toulouse, IRAP, UPS OMP, Toulouse, France 6.CNRS, IRAP, F-31028 Toulouse 4, France 7.CETP UVSQ, Velizy Villacoublay, France 8.UCL, London, England |
| 推荐引用方式 GB/T 7714 | Wei, X. H.,Cao, J. B.,Zhou, G. C.,et al. Generation mechanism of the whistler-mode waves in the plasma sheet prior to magnetic reconnection[J]. ADVANCES IN SPACE RESEARCH,2013,52(1):205-210. |
| APA | Wei, X. H..,Cao, J. B..,Zhou, G. C..,Fu, H. S..,Santolik, O..,...&Fazakerley, A..(2013).Generation mechanism of the whistler-mode waves in the plasma sheet prior to magnetic reconnection.ADVANCES IN SPACE RESEARCH,52(1),205-210. |
| MLA | Wei, X. H.,et al."Generation mechanism of the whistler-mode waves in the plasma sheet prior to magnetic reconnection".ADVANCES IN SPACE RESEARCH 52.1(2013):205-210. |
入库方式： OAI收割
来源：国家空间科学中心
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