Cold electron heating by EMIC waves in the plasmaspheric plume with observations of the Cluster satellite
Cold electron heating by EMIC waves in the plasmaspheric plume with observations of the Cluster satellite
复制标题
通过 Cluster 卫星的观测，等离子层羽流中 EMIC 波产生的冷电子加热
DOI：
10.1002/2014gl059241
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发表时间：
2014-03
影响因子：
5.2
通讯作者：
Lucek Elizabeth
中科院分区：
文献类型：
--
作者：
Yuan Zhigang;Xiong Ying;Huang Shiyong;Deng Xiaohua;Pang Ye;Zhou Meng;D;ouras Iannis;Trotignon Jean Gabriel;Fazakerley Andrew N.;Lucek Elizabeth
我们报告在现场观测的等离子体层电子加热的等离子体层羽簇航天器。电子加热事件伴随着增强的电磁离子回旋（EMIC）波的密度增加管道的负密度梯度侧的两个子结构的等离子体层羽。电子加热对于0°和180°的俯仰角比对于90°的俯仰角强得多。对电子与观测到的EMIC波之间的朗道共振相互作用的理论计算表明，在等离子体层羽流的外边界存在O+离子的情况下，斜向EMIC波的朗道阻尼是加热冷电子的合理候选。因此，这一观测被认为是等离子体层电子加热通过朗道阻尼的EMIC波在等离子体层羽流的现场证据。
We report in situ observations by the Cluster spacecraft of plasmaspheric electron heating in the plasmaspheric plume. Electron heating events were accompanied by enhancements of electromagnetic ion cyclotron (EMIC) waves in the increased density ducts on the negative density gradient side for two substructures of the plasmaspheric plume. Electron heating is much stronger for the pitch angle of 0° and 180° than for the pitch angle of 90°. Theoretical calculations of the Landau resonant interaction between electrons and observed EMIC waves demonstrate that Landau damping of oblique EMIC waves is a reasonable candidate to heat cold electrons in the presence of O+ ions in the outer boundary of the plasmaspheric plume. Therefore, this observation is considered in situ evidence of plasmaspheric electron heating through Landau damping of EMIC waves in plasmaspheric plumes.
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影响因子：
5.2
作者：
Y. Liu;B. J. Fraser;F. Menk
通讯作者：
Y. Liu;B. J. Fraser;F. Menk
影响因子：
5.2
作者：
M. Soria-Santacruz;Maria Spasojevic;Lunjin Chen
通讯作者：
M. Soria-Santacruz;Maria Spasojevic;Lunjin Chen
影响因子：
2.4
作者：
L. Lanzerotti;A. Hasegawa;C. Maclennan
通讯作者：
L. Lanzerotti;A. Hasegawa;C. Maclennan
影响因子：
1.9
作者：
F. Darrouzet;J. Keyser;P. Décréau;F. Mazouz;X. Vallières
通讯作者：
F. Darrouzet;J. Keyser;P. Décréau;F. Mazouz;X. Vallières
影响因子：
--
作者：
Y. Hu;R. Denton;J. Johnson
通讯作者：
Y. Hu;R. Denton;J. Johnson