PMO OpenIR  > 太阳活动的多波段观测研究团组
On the envelope soliton below the H+ gyrofrequency in low auroral region
Wang, DY; Huang, GL; Falthammar, CG
2002
Source PublicationASTROPHYSICS AND SPACE SCIENCE
Volume282Issue:2Pages:421-432
AbstractTwo envelope soliton events below the H+ gyrofrequency with localized density depletion were discovered in low auroral region (similar to 1760 km) by Freja satellite. These events were correlated in time with the observations of the ratio of oxygen ion density to hydrogen ion density sharp increase and the electrons energization. These envelope solitons have a characteristic frequency at similar to180-190 Hz, which are obviously different from the electron-ion lower hybrid wave frequency and the helium ion gyrofrequency in low auroral plasma, but it is close to the resonance frequency of hydrogen ion-oxygen ion hybrid wave. A modulational instability model of an ion-ion hybrid wave has been discussed here. It is found that the envelope soliton below the H+ gyrofrequency in low auroral region may be generated by this modulational instability on condition that the local oxygen ion density is larger than the local hydrogen ion density.
WOS HeadingsScience & Technology ; Physical Sciences
WOS KeywordLOWER-HYBRID WAVES ; FREJA OBSERVATIONS ; ION-ACCELERATION ; ELECTRON-PRECIPITATION ; ELF WAVES ; PLASMA ; IONOSPHERE
Indexed BySCI
Language英语
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS IDWOS:000178929400006
Citation statistics
Cited Times:6[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://libir.pmo.ac.cn/handle/332002/15796
Collection太阳活动的多波段观测研究团组
Affiliation1.Acad Sinica, Purple Mt Observ, Nanjing 210008, Peoples R China
2.Royal Inst Technol, Alfven Lab, S-10044 Stockholm, Sweden
Recommended Citation
GB/T 7714
Wang, DY,Huang, GL,Falthammar, CG. On the envelope soliton below the H+ gyrofrequency in low auroral region[J]. ASTROPHYSICS AND SPACE SCIENCE,2002,282(2):421-432.
APA Wang, DY,Huang, GL,&Falthammar, CG.(2002).On the envelope soliton below the H+ gyrofrequency in low auroral region.ASTROPHYSICS AND SPACE SCIENCE,282(2),421-432.
MLA Wang, DY,et al."On the envelope soliton below the H+ gyrofrequency in low auroral region".ASTROPHYSICS AND SPACE SCIENCE 282.2(2002):421-432.
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