PMO OpenIR  > 太阳和太阳系等离子体研究团组
Two-fluid motion of plasma in Alfven waves and the heating of solar coronal loops
Wu, DJ; Fang, C
1999-02-01
Source PublicationASTROPHYSICAL JOURNAL
ISSN0004-637X
Volume511Issue:2Pages:958-964
AbstractTaking the effect of two-fluid motion of plasma in Alfven waves into account, a nonzero parallel electric field can rise within the wave itself under collisionless conditions. This leads to a kinetic dissipation of Alfven waves by the wave-particle resonant interaction and electron heating along the ambient magnetic field lines. Employing the drift kinetic equation, we investigated this electron-heating mechanism under the cool ion approximation. The result shows that the damping rate and the heating rate obviously depend on the strength distribution of the ambient magnetic field, and that they reach their maximum values at B-0 = B-m and B-0 = (1 + 2 alpha)B-1/2(m), respectively, for the perturbed field of delta B proportional to B-0(alpha), where B-m is the ambient magnetic field strength when upsilon(A) = upsilon(Te). Finally, we propose that this heating mechanism can be applied to explain the brightness distribution of solar soft X-ray coronal loops.
KeywordMhd Plasmas Sun : Corona Sun : X-Rays, Gamma Rays Waves
Subject AreaAstronomy & Astrophysics
WOS HeadingsScience & Technology ; Physical Sciences
WOS KeywordSCALING LAW ; MAGNETOSPHERE ; IONOSPHERE ; TURBULENCE ; MECHANISMS ; AURORA ; YOHKOH
Indexed BySCI
Language英语
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS IDWOS:000079158100040
Citation statistics
Cited Times:44[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://libir.pmo.ac.cn/handle/332002/8311
Collection太阳和太阳系等离子体研究团组
Affiliation1.Acad Sinica, Purple Mt Observ, Nanjing 210008, Peoples R China
2.Nanjing Univ, Dept Astron, Nanjing 210093, Peoples R China
Recommended Citation
GB/T 7714
Wu, DJ,Fang, C. Two-fluid motion of plasma in Alfven waves and the heating of solar coronal loops[J]. ASTROPHYSICAL JOURNAL,1999,511(2):958-964.
APA Wu, DJ,&Fang, C.(1999).Two-fluid motion of plasma in Alfven waves and the heating of solar coronal loops.ASTROPHYSICAL JOURNAL,511(2),958-964.
MLA Wu, DJ,et al."Two-fluid motion of plasma in Alfven waves and the heating of solar coronal loops".ASTROPHYSICAL JOURNAL 511.2(1999):958-964.
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