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Numerical Simulation on the Propagation and Deflection of Fast Coronal Mass Ejections (CMEs) Interacting with a Corotating Interaction Region in Interplanetary Space
Alternative TitleWOS:000506012000044
Liu, Yousheng1; Shen, Fang1,2; Yang, Yi1
Source PublicationASTROPHYSICAL JOURNAL
2019
Volume887Issue:2Pages:150
DOI10.3847/1538-4357/ab543e
ISSN0004-637X
Language英语
KeywordEVOLUTION MODEL WIND HELIOSPHERE COLLISION SPHEROMAK SUN
AbstractPrevious research has shown that the deflection of coronal mass ejections (CMEs) in interplanetary space, especially fast CMEs, is a common phenomenon. The deflection caused by the interaction with background solar wind is an important factor to determine whether CMEs could hit Earth or not. As the Sun rotates, there will be interactions between solar wind flows with different speeds. When faster solar wind runs into slower solar wind ahead, it will form a compressive area corotating with the Sun, which is called a corotating interaction region (CIR). These compression regions always have a higher density than the common background solar wind. When interacting with CME, will this make a difference in the deflection process of CME? In this research, first, a three-dimensional (3D) flux-rope CME initialization model is established based on the graduated cylindrical shell (GCS) model. Then this CME model is introduced into the background solar wind, which is obtained using a 3D IN (INterplanetary) -TVD-MHD model. The Carrington Rotation (CR) 2154 is selected as an example to simulate the propagation and deflection of fast CME when it interacts with background solar wind, especially with the CIR structure. The simulation results show that: (1) the fast CME will deflect eastward when it propagates into the background solar wind without the CIR; (2) when the fast CME hits the CIR on its west side, it will also deflect eastward, and the deflection angle will increase compared with the situation without CIR.
Indexed BySCI
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Document Type期刊论文
Identifierhttp://ir.nssc.ac.cn/handle/122/7589
Collection中国科学院国家空间科学中心
Affiliation1.Chinese Acad Sci, Natl Space Sci Ctr, SIGMA Weather Grp, State Key Lab Space Weather, Beijing 100190, Peoples R China
2.Univ Chinese Acad Sci, Coll Earth Sci, Beijing 100049, Peoples R China
3.Inst Space Sci & Appl Technol, Shenzhen 518055, Peoples R China
Recommended Citation
GB/T 7714
Liu, Yousheng,Shen, Fang,Yang, Yi. Numerical Simulation on the Propagation and Deflection of Fast Coronal Mass Ejections (CMEs) Interacting with a Corotating Interaction Region in Interplanetary Space[J]. ASTROPHYSICAL JOURNAL,2019,887(2):150.
APA Liu, Yousheng,Shen, Fang,&Yang, Yi.(2019).Numerical Simulation on the Propagation and Deflection of Fast Coronal Mass Ejections (CMEs) Interacting with a Corotating Interaction Region in Interplanetary Space.ASTROPHYSICAL JOURNAL,887(2),150.
MLA Liu, Yousheng,et al."Numerical Simulation on the Propagation and Deflection of Fast Coronal Mass Ejections (CMEs) Interacting with a Corotating Interaction Region in Interplanetary Space".ASTROPHYSICAL JOURNAL 887.2(2019):150.
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