PMO OpenIR  > 太阳活动的多波段观测研究团组
Whistler waves in Freja observations
Huang, GL; Wang, DY; Song, QW
2004-02-17
Source PublicationJOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS
ISSN0148-0227
Volume109Issue:A2Pages:A02307
AbstractSeveral examples of whistler wave packets accompanied by density cavities are detected in F4 experiments of Freja satellite. The density depletion seems to be a fixed structure in space from the cross-correlation of two Langmuir probes. The wavelet analysis shows the frequency drift from 1 kHz ( below the low-hybrid frequency) to 200 Hz ( below the proton cyclotron frequency). The wave packets are always associated with an extremely low frequency component at 20-30 Hz ( around the oxygen ion cyclotron frequency). The method of the minimum variance is used to calculate the oblique propagation of the wave packets with an angle decreased from 31 to 17 degrees between the wave vector and the ambient magnetic field. The right polarization of the wave packets is shown in the direction of the ambient magnetic field. Moreover, the phase velocity of the wave packets is inversely proportional to the frequency. These features may support the formation of envelope solitary whistler waves.
KeywordAuroral Region Plasma Waves Whistler
Subject AreaAstronomy & Astrophysics
WOS HeadingsScience & Technology ; Physical Sciences
DOI10.1029/2003JA010137
WOS KeywordKINETIC ALFVEN WAVES ; DENSITY DEPLETIONS ; ENVELOPE SOLITON ; PLASMA ; PARAMETERS ; SATELLITE ; CAVITIES ; SPACE ; HISS
Indexed BySCI
Language英语
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS IDWOS:000189374800001
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Document Type期刊论文
Identifierhttp://libir.pmo.ac.cn/handle/332002/7735
Collection太阳活动的多波段观测研究团组
AffiliationChinese Acad Sci, Purple Mt Observ, Nanjing, Peoples R China
Recommended Citation
GB/T 7714
Huang, GL,Wang, DY,Song, QW. Whistler waves in Freja observations[J]. JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS,2004,109(A2):A02307.
APA Huang, GL,Wang, DY,&Song, QW.(2004).Whistler waves in Freja observations.JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS,109(A2),A02307.
MLA Huang, GL,et al."Whistler waves in Freja observations".JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS 109.A2(2004):A02307.
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