DOI: 10.1002/2014GL059391
论文题名: MHD analysis of the velocity oscillations in the outer heliosphere
作者: Fujiki K. ; Washimi H. ; Hayashi K. ; Zank G.P. ; Tokumaru M. ; Tanaka T. ; Florinski V. ; Kubo Y.
刊名: Geophysical Research Letters
ISSN: 0094-10280
EISSN: 1944-10011
出版年: 2014
卷: 41, 期: 5 起始页码: 1420
结束页码: 1424
语种: 英语
英文关键词: interplanetary scintillation
; MHD simulation
; outer heliosphere
; solar wind
Scopus关键词: Computer simulation
; Scintillation
; Solar wind
; Inner boundary conditions
; Interplanetary scintillation
; MHD simulation
; Monochromatic wavelength
; Outer heliosphere
; Solar magnetic fields
; Solar wind structures
; Velocity oscillations
; Solar system
; amplitude
; boundary condition
; magnetic field
; solar system
; solar wind
; velocity structure
英文摘要: We carried out a MHD simulation of deep interplanetary space from 2001 to 2009 with a realistic inner boundary condition obtained from a time-dependent 3-D ideal MHD model incorporating interplanetary scintillation and synoptic solar magnetic field data. As a result, we found that wavy solar wind structure with amplitudes of 10-50 km/s and a monochromatic wavelength of ~2 AU filled deep interplanetary space beyond ~50 AU from the Sun, which corresponds to a velocity oscillation detected by Voyager 2. The phase of the velocity oscillation is anticorrelated with density fluctuations in our simulation, which suggests that the velocity oscillation should propagate inward toward the Sun in the frame moving with the solar wind but is advected outward by the solar wind in the rest frame of the Sun. Key Points Realistic 3-D MHD simulation of heliosphere Velocity oscillation excited by pickup ions Interplanetary scintillation at STEL and solar magnetogram at WSO ©2014. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84895911772&doi=10.1002%2f2014GL059391&partnerID=40&md5=a3055ec688d3dfe907b379e44a521765
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/7544
Appears in Collections: 气候减缓与适应
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作者单位: STEL, Nagoya University, Nagoya, Japan
Recommended Citation:
Fujiki K.,Washimi H.,Hayashi K.,et al. MHD analysis of the velocity oscillations in the outer heliosphere[J]. Geophysical Research Letters,2014-01-01,41(5).