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Alternative TitleCharacteristics of Electron Distribution Functionsin Magnetic Cloud Boundary Layers
朱春明; 魏奉思; 冯学尚; 左平兵; 北京8701信箱
Source Publication空间科学学报
Keyword磁云 磁云边界层 电子分布函数
Other AbstractBased on the magnetic cloud events detected by WIND spacecraft from 1995 to 2006,here are studied on the patterns of electron flows, characteristics of the electron distribution functions as well as their relationships with the heating and acceleration of electrons in the Magnetic Clouds Boundary Layers (MCBL).The main results are as follows. Firstly, there are several types of electron flow patterns in the MCBL.Secondly, compared with the background solar wind and the magnetic cloud body, the thermal core parts of the electron velocity distribution functions usually increase,together with increasing of superthermal electrons in directions perpendicular to the magnetic field and either parallel or anti-parallel to the magnetic field. Furthermore,the distributions of energetic electrons increase in all directions in almost ten percent of the MCBL.Third by comparisons of the modifications to the electron distribution functions-MCBL and interplantery shocks ahead of magnetic clouds,it suggests that the two structures result from different mechanisms.Lastly investigation on the relationships between the enhancements of wave activities and electron distri-bution functions as well as ion fluxes was also made. These observations and comparisons indicate further that magnetic clouds are important dynamical structures possibly associated with magnetic reconnection as previous studies on MCBL have shown.
Indexed ByCSCD
Funding Project中国科学院空间科学与应用研究中心
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Document Type期刊论文
Corresponding Author北京8701信箱
Recommended Citation
GB/T 7714
朱春明,魏奉思,冯学尚,等. 行星际磁云边界层中的电子分布函数特征[J]. 空间科学学报,2009,29(4):359-367.
APA 朱春明,魏奉思,冯学尚,左平兵,&北京8701信箱.(2009).行星际磁云边界层中的电子分布函数特征.空间科学学报,29(4),359-367.
MLA 朱春明,et al."行星际磁云边界层中的电子分布函数特征".空间科学学报 29.4(2009):359-367.
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