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Global distribution of coronal mass outputs and its relation to solar magnetic field structures
Wei, F. S.; Feng, X. S.; Cai, H. C.; Zhou, Q. J.; 北京8701信箱
Department空间天气学国家重点实验室
Source PublicationJournal of Geophysical Research-Space Physics
2003
Volume108Issue:A6Pages:1238
ISSN0148-0227
Language英语
KeywordCoronal Mass Output Flux Solar Magnetic Field Current Sheet Global Structure Heliospheric Current Sheet Interplanetary Scintillation Observations Streamer Structure Wind Structure Energy-flow Evolution Speed Sun Origin Models
AbstractThe basic characteristics of the coronal mass output near the Sun are analyzed with the statistic and numerical methods by using observational data from K corona brightness, interplanetary scintillation, and photospheric magnetic field during the descending phases (1983) and the minimum (1984) of solar activity. The methods used here are based on the global distribution of the solar magnetic field on the source surface (at 2.5 solar radii (R-S)). Our main results are the following: (1) There are certain regular persistent patterns in the global distributions of coronal mass outputs flux F-m (density rho x speed V), which shows that the highest F-m in 1983 and 1984 display more regularly double peaks and single-peak wave-like patterns on the source surface (2.5 R-S), respectively. The highest and the lowest F-m are associated with the coronal current sheet and the polar corona regions, respectively, and the other regions are associated with a moderate F-m. (2) The speed dependence of F-m is different for various magnetic structures. The dependence is nearly constant in the polar coronal region and monotonically rises in the current sheet regions both for the descending ( 1983) and the ascending (1976) phases. ( 3) The different frequency number distributions of F-m also correspond to different magnetic field structures, with average values (F) over bar (m,p) = 8.3 x 10(11) particles/cm(2)(s) for the polar coronal region and (F) over bar (m,c) = 17.7 x 10(11) particles/cm(2)(s) for the coronal current sheet. (4) As a theoretical test, a preliminary numerical study of the global distribution near 2.5 R-S for the Carrington rotation 1742 in 1983 has been made by solving a self-consistent MHD system based on the observations of K coronal brightness and the photospheric magnetic fields. The numerical results indicate that the global distributions of the coronal mass outputs on the source surface could be used to understand/predict the change of the interplanetary conditions.
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/122/1016
Collection空间科学部
Corresponding Author北京8701信箱
Recommended Citation
GB/T 7714
Wei, F. S.,Feng, X. S.,Cai, H. C.,et al. Global distribution of coronal mass outputs and its relation to solar magnetic field structures[J]. Journal of Geophysical Research-Space Physics,2003,108(A6):1238.
APA Wei, F. S.,Feng, X. S.,Cai, H. C.,Zhou, Q. J.,&北京8701信箱.(2003).Global distribution of coronal mass outputs and its relation to solar magnetic field structures.Journal of Geophysical Research-Space Physics,108(A6),1238.
MLA Wei, F. S.,et al."Global distribution of coronal mass outputs and its relation to solar magnetic field structures".Journal of Geophysical Research-Space Physics 108.A6(2003):1238.
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