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Dissipative solitary kinetic Alfven wave and electron acceleration
Wu, DJ
Source PublicationPHYSICS OF PLASMAS
AbstractSome recent studies of observations in situ by space satellites show that low frequency electromagnetic fluctuations in the auroral ionosphere and magnetosphere can often be identified as soliatry kinetic Alfven waves (SKAWs), and further analyses of the data reveal clearly that electron collisional dissipation can considerably affect the structure and evolution of SKAWs. In this paper, a model of nonlinear kinetic Alfven waves, called a dissipative SKAW (DSKAW), is presented, in which the effect of electron collisional dissipation has been taken into account. The results show that DSKAW can produce a local shock-like structure with a net parallel electric potential drop, in which the associated parallel electric field is primarily caused by nonlinear electron inertia. In particular, it is argued that DSKAW can accelerate electrons efficiently to the order of the local Alfven velocity. This suggests that DSKAW can provide an efficient acceleration mechanism for energetic electrons, which can frequently be encountered in various space and cosmic plasma environments. (C) 2003 American Institute of Physics.
KeywordLow-beta-plasma Freja Spacecraft Solar-flares Scale Ionosphere Satellite Microwave Existence
Subject AreaPhysics
WOS HeadingsScience & Technology ; Physical Sciences
Indexed BySCI
WOS Research AreaPhysics
WOS SubjectPhysics, Fluids & Plasmas
WOS IDWOS:000182450100023
Citation statistics
Cited Times:34[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Affiliation1.Chinese Acad Sci, Purple Mt Observ, Nanjing 210008, Peoples R China
2.Chinese Acad Sci, Natl Astron Observ, Beijing 100012, Peoples R China
Recommended Citation
GB/T 7714
Wu, DJ. Dissipative solitary kinetic Alfven wave and electron acceleration[J]. PHYSICS OF PLASMAS,2003,10(5):1364-1370.
APA Wu, DJ.(2003).Dissipative solitary kinetic Alfven wave and electron acceleration.PHYSICS OF PLASMAS,10(5),1364-1370.
MLA Wu, DJ."Dissipative solitary kinetic Alfven wave and electron acceleration".PHYSICS OF PLASMAS 10.5(2003):1364-1370.
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