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What geometrical factors determine the in situ solar wind speed?
Li Bo; Chen Yao; Xia LiDong; Li, B (reprint author), Shandong Univ Weihai, Sch Space Sci & Phys, Shandong Prov Key Lab Opt Astron & Solar Terr Env, Weihai 264209, Peoples R China.
Department空间科学部
Source PublicationCHINESE SCIENCE BULLETIN
2012
Volume57Issue:12Pages:1409-1414
ISSN1001-6538
Language英语
KeywordSolar Wind Magnetic Field Magnetohydrodynamic Waves Space Weather
AbstractAt present it remains to address why the fast solar wind is fast and the slow wind is slow. Recently we have shown that the field line curvature may substantially influence the wind speed v, thereby offering an explanation for the Arge et al. finding that v depends on more than just the flow tube expansion factor. Here we show by extensive numerical examples that the correlation between v and field line curvature is valid for rather general base boundary conditions and for rather general heating functions. Furthermore, the effect of field line curvature is even more pronounced when the proton-alpha particle speed difference is examined. We suggest that any solar wind model has to take into account the field line shape for any quantitative analysis to be made.; At present it remains to address why the fast solar wind is fast and the slow wind is slow. Recently we have shown that the field line curvature may substantially influence the wind speed v, thereby offering an explanation for the Arge et al. finding that v depends on more than just the flow tube expansion factor. Here we show by extensive numerical examples that the correlation between v and field line curvature is valid for rather general base boundary conditions and for rather general heating functions. Furthermore, the effect of field line curvature is even more pronounced when the proton-alpha particle speed difference is examined. We suggest that any solar wind model has to take into account the field line shape for any quantitative analysis to be made.
Indexed BySCI
Funding Project中国科学院空间科学与应用研究中心
Document Type期刊论文
Identifierhttp://ir.nssc.ac.cn/handle/122/3236
Collection空间科学部
Corresponding AuthorLi, B (reprint author), Shandong Univ Weihai, Sch Space Sci & Phys, Shandong Prov Key Lab Opt Astron & Solar Terr Env, Weihai 264209, Peoples R China.
Recommended Citation
GB/T 7714
Li Bo,Chen Yao,Xia LiDong,et al. What geometrical factors determine the in situ solar wind speed?[J]. CHINESE SCIENCE BULLETIN,2012,57(12):1409-1414.
APA Li Bo,Chen Yao,Xia LiDong,&Li, B .(2012).What geometrical factors determine the in situ solar wind speed?.CHINESE SCIENCE BULLETIN,57(12),1409-1414.
MLA Li Bo,et al."What geometrical factors determine the in situ solar wind speed?".CHINESE SCIENCE BULLETIN 57.12(2012):1409-1414.
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