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Energetic electron bursts in the plasma sheet and their relation with BBFs
Duan, A. Y.; Cao, J. B.; Dunlop, M.; Wang, Z. Q.; Cao, JB (reprint author), Beihang Univ, Space Sci Inst, Sch Astronaut, Beijing 100191, Peoples R China.
Department空间科学部
Source PublicationJOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS
2014
Volume119Issue:11Pages:8902-8915
ISSN2169-9380
Language英语
KeywordEnergetic Electrons Neutral Sheet Plasma Sheet Bursty Bulk Flows Dipolarization Front Magnetic Reconnection
AbstractWe studied energetic electron bursts (EEBs) (40-250keV) in the plasma sheet (PS) and their relation to bursty bulk flows (BBFs) using the data recorded by Cluster from 2001 to 2009. The EEBs in the PS can be classified into four types. Three types of EEBs are dispersionless, including EEBs accompanied with BBFs (V>250km/s) but without dipolarization front (DF); EEBs accompanied with both dipolarization front (DF) and BBF; and EEBs accompanied with DF and fast flow with V<250km/s. One type of EEB, i.e., EEBs not accompanied with BBFs and DFs, is dispersed. The energetic electrons (40-130keV) can be easily transported earthward by BBFs due to the strong dawn-dusk electric field embedded in BBFs. The DFs in BBFs can produce energetic electrons (40 to 250keV). For the EEBs with DF and BBFs, the superposed epoch analyses show that the increase of energetic electron flux has two phases: gradual increase phase before DF and rapid increase phase concurrent with DF. In the PS around x=-18 R-E, 60%-70% of EEBs are accompanied with BBFs, indicating that although hitherto there have been various acceleration mechanisms of energetic electrons, most of the energetic electrons in the PS are related with magnetic reconnection, and they are produced either directly by magnetic reconnection or indirectly by the DFs within BBFs. In the BBF's braking region of -12 R-E
Indexed BySCI
Document Type期刊论文
Identifierhttp://ir.nssc.ac.cn/handle/122/4441
Collection空间科学部
Corresponding AuthorCao, JB (reprint author), Beihang Univ, Space Sci Inst, Sch Astronaut, Beijing 100191, Peoples R China.
Recommended Citation
GB/T 7714
Duan, A. Y.,Cao, J. B.,Dunlop, M.,et al. Energetic electron bursts in the plasma sheet and their relation with BBFs[J]. JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS,2014,119(11):8902-8915.
APA Duan, A. Y.,Cao, J. B.,Dunlop, M.,Wang, Z. Q.,&Cao, JB .(2014).Energetic electron bursts in the plasma sheet and their relation with BBFs.JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS,119(11),8902-8915.
MLA Duan, A. Y.,et al."Energetic electron bursts in the plasma sheet and their relation with BBFs".JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS 119.11(2014):8902-8915.
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