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Auroral electron acceleration by dissipative solitary kinetic Alfven waves
Wu, DJ; Chao, JK
Source PublicationPHYSICS OF PLASMAS
AbstractThe acceleration of auroral electrons has long been an open problem. In a recent work [Wu, Phys. Plasmas 10, 1364 (2003)], the model of a dissipative solitary kinetic Alfven wave (DSKAW) has been proposed to describe the physics of strong electric spikes observed often in the auroral ionosphere and magnetosphere. In this Brief Communication, the DSKAW model is applied to the auroral acceleration region and the possibility of DSKAWs producing auroral electrons is further discussed. The result shows that DSKAWs in the acceleration region can accelerate electrons enough to reach auroral energies and that the most efficient acceleration occurs just at the bottom of the acceleration region where the Alfven speed also peaks. Moreover, the acceleration mechanism by DSKAWs can plausibly explain the cut-off above 10 keV, which is inferred from the energy distribution of auroral precipitating electrons. (C) 2003 American Institute of Physics.
KeywordLow-beta-plasma Altitude Distributions Satellite Shocks
Subject AreaPhysics
WOS HeadingsScience & Technology ; Physical Sciences
Indexed BySCI
WOS Research AreaPhysics
WOS SubjectPhysics, Fluids & Plasmas
WOS IDWOS:000184899800042
Citation statistics
Cited Times:34[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Affiliation1.CAS, Purple Mt Observ, Nanjing 210008, Peoples R China
2.NCU, Inst Space Sci, Chungli 32001, Taiwan
3.Chinese Acad Sci, Natl Astron Observ, Beijing 100012, Peoples R China
Recommended Citation
GB/T 7714
Wu, DJ,Chao, JK. Auroral electron acceleration by dissipative solitary kinetic Alfven waves[J]. PHYSICS OF PLASMAS,2003,10(9):3787-3789.
APA Wu, DJ,&Chao, JK.(2003).Auroral electron acceleration by dissipative solitary kinetic Alfven waves.PHYSICS OF PLASMAS,10(9),3787-3789.
MLA Wu, DJ,et al."Auroral electron acceleration by dissipative solitary kinetic Alfven waves".PHYSICS OF PLASMAS 10.9(2003):3787-3789.
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