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Properties of Whistler Waves in Warm Electron Plasmas
Zhao, Jinsong
2017-11-20
Source PublicationASTROPHYSICAL JOURNAL
ISSN0004-637X
Volume850Issue:1Pages:10
Corresponding AuthorZhao, Jinsong()
AbstractDispersion relation and electromagnetic properties of obliquely propagating whistler waves are investigated on the basis of a warm electron fluid model. The magnetic field of whistler waves is nearly circularly polarized with respect to the wave vector in a plasma where the electron plasma frequency Omega(pe) is much larger than the electron cyclotron frequency Omega(ce), and the magnetic field polarization can become elliptical, or even linear, polarization as Omega(pe) less than or similar to Omega(ce). In the plasmas with Omega(pe) < Omega(ce), the resonant frequency is about Omega(ce) cos theta, which is different from Omega(pe) cos theta predicted by the cold electron fluid model. Near the resonant frequency, the whistler wave approximates a quasi-magnetostatic mode, not a quasi-electrostatic mode in the cold electron plasmas. Moreover, the detailed mode properties are given in Earth's magnetosphere, the solar active region, and Jupiter's polar cap. Furthermore, the study proposes that the ratio of the electrostatic to electromagnetic component of the electric field can be used to distinguish the whistler mode from the Z-mode in the frequency range of Omega(pe) < omega < Omega(ce) in the solar active region and Jupiter's polar cap.
Keywordmagnetohydrodynamics (MHD) plasmas waves
DOI10.3847/1538-4357/aa906f
WOS KeywordPROBES EFW INSTRUMENT ; MODE WAVES ; MAGNETOHYDRODYNAMIC TURBULENCE ; STOCHASTIC ACCELERATION ; EARTHS MAGNETOSPHERE ; SHEATH IMPEDANCE ; HISS ; POLARIZATION ; DIFFUSION ; RADIATION
Indexed BySCI
Language英语
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS IDWOS:000415152100013
PublisherIOP PUBLISHING LTD
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Document Type期刊论文
Identifierhttp://libir.pmo.ac.cn/handle/332002/22761
Collection中国科学院紫金山天文台
Corresponding AuthorZhao, Jinsong
AffiliationChinese Acad Sci, Key Lab Planetary Sci, Purple Mt Observ, Nanjing 210008, Jiangsu, Peoples R China
Recommended Citation
GB/T 7714
Zhao, Jinsong. Properties of Whistler Waves in Warm Electron Plasmas[J]. ASTROPHYSICAL JOURNAL,2017,850(1):10.
APA Zhao, Jinsong.(2017).Properties of Whistler Waves in Warm Electron Plasmas.ASTROPHYSICAL JOURNAL,850(1),10.
MLA Zhao, Jinsong."Properties of Whistler Waves in Warm Electron Plasmas".ASTROPHYSICAL JOURNAL 850.1(2017):10.
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