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Numerical study of the propagation characteristics of coronal mass ejections in a structured ambient solar wind
Zhou, Yufen; Feng, Xueshang
Department空间科学部
Source PublicationJOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS
2017
Volume122Issue:2Pages:1451-1462
ISSN2169-9380
Language英语
AbstractUsing a three-dimensional (3-D) magnetohydrodynamics (MHD) model, we analyze and study the propagation characteristics of coronal mass ejections (CMEs) launched at different positions in a realistic structured ambient solar wind. Here the ambient solar wind structure during the Carrington rotation 2095 is selected, which is the characteristics of activity rising phase. CMEs with a simple spherical plasmoid structure are initiated at different solar latitudes with respect to the heliospheric current sheet (HCS) and the Earth in the same ambient solar wind. Then, we numerically obtained the evolution process of the CMEs from the Sun to the interplanetary space. When the Earth and the CME launch position are located on the same side of the HCS, the arrival time of the shock at the Earth is faster than that when the Earth and the CME launch position are located on the opposite side of the HCS. The disturbance amplitudes for the same side event are also larger than those for the opposite side event. This may be due to the fact that the HCS between the CME and the Earth for the opposite side event hinders its propagation and weaken it. The CMEs tend to deflect toward the HCS in the latitudinal direction near the corona and then propagate almost parallel to the HCS in the interplanetary space. This deflecting tendency may be caused by the dynamic action of near-Sun magnetic pressure gradient force on the ejected coronal plasma.
Indexed BySCI
Document Type期刊论文
Identifierhttp://ir.nssc.ac.cn/handle/122/5813
Collection空间科学部
Recommended Citation
GB/T 7714
Zhou, Yufen,Feng, Xueshang. Numerical study of the propagation characteristics of coronal mass ejections in a structured ambient solar wind[J]. JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS,2017,122(2):1451-1462.
APA Zhou, Yufen,&Feng, Xueshang.(2017).Numerical study of the propagation characteristics of coronal mass ejections in a structured ambient solar wind.JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS,122(2),1451-1462.
MLA Zhou, Yufen,et al."Numerical study of the propagation characteristics of coronal mass ejections in a structured ambient solar wind".JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS 122.2(2017):1451-1462.
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