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Variations in the Correlations of Acceleration and Force of Slow and Fast CMEs with Solar Activity during Solar Cycles 23-24
Du, Zhanle1,2
2021-02-01
Source PublicationSOLAR PHYSICS
ISSN0038-0938
Volume296Issue:2Pages:17
AbstractStudying the behavior of coronal mass ejections (CMEs) is important for both solar physics and space weather. The correlations of smoothed monthly mean daily integrated CME acceleration [a], mass [M], and the force [Ma] to drive CMEs with sunspot activity [R-I] are analyzed for both slow and fast CMEs and for both Solar Cycles 23 and 24 separately. It is found that a is inversely related to both RI and M. The correlation between Ma and RI for both slow and fast CMEs is negative at the rising phase of Solar Cycle 23 and positive otherwise. There is a sharp peak in gamma = Ma/R-I near the solar minimum (December 2008) for both slow and fast CMEs. However, for fast CMEs, there is a sharp negative peak near the previous solar minimum (August 1996) and another positive peak near the current solar minimum (2019). The positive (negative) peak tends to be related to the solar minimum from a stronger (weaker) to a weaker (stronger) solar cycle. These results suggest that the CME acceleration depends more on the strength of solar activity than on the CME's speed. Stronger magnetic activity may slow down the CMEs that are too massive or too fast and weaker activity may speed up the CMEs that are less massive or too slow. During a few years' period of magnetic-field polarity reversal around the solar minimum, the force provided by large-scale magnetic-field structures may not be strong enough to constrain CME motions, leading to the "escape" of CMEs with large vertical bar gamma vertical bar.
KeywordCoronal Mass Ejections (CMEs) Solar cycle Sunspots Time variations secular and long term
Funding OrganizationNational Science Foundation of China (NSFC) ; National Science Foundation of China (NSFC) ; National Science Foundation of China (NSFC) ; National Science Foundation of China (NSFC) ; National Science Foundation of China (NSFC) ; National Science Foundation of China (NSFC) ; National Science Foundation of China (NSFC) ; National Science Foundation of China (NSFC)
DOI10.1007/s11207-021-01778-5
Language英语
Funding ProjectNational Science Foundation of China (NSFC)[11603040] ; National Science Foundation of China (NSFC)[11973058]
Funding OrganizationNational Science Foundation of China (NSFC) ; National Science Foundation of China (NSFC) ; National Science Foundation of China (NSFC) ; National Science Foundation of China (NSFC) ; National Science Foundation of China (NSFC) ; National Science Foundation of China (NSFC) ; National Science Foundation of China (NSFC) ; National Science Foundation of China (NSFC)
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS IDWOS:000616757800001
PublisherSPRINGER
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Document Type期刊论文
Identifierhttp://ir.bao.ac.cn/handle/114a11/79511
Collection中国科学院国家天文台
Corresponding AuthorDu, Zhanle
Affiliation1.Chinese Acad Sci, Natl Astron Observ, Key Lab Solar Act, Beijing 100101, Peoples R China
2.Univ Chinese Acad Sci, Beijing, Peoples R China
Recommended Citation
GB/T 7714
Du, Zhanle. Variations in the Correlations of Acceleration and Force of Slow and Fast CMEs with Solar Activity during Solar Cycles 23-24[J]. SOLAR PHYSICS,2021,296(2):17.
APA Du, Zhanle.(2021).Variations in the Correlations of Acceleration and Force of Slow and Fast CMEs with Solar Activity during Solar Cycles 23-24.SOLAR PHYSICS,296(2),17.
MLA Du, Zhanle."Variations in the Correlations of Acceleration and Force of Slow and Fast CMEs with Solar Activity during Solar Cycles 23-24".SOLAR PHYSICS 296.2(2021):17.
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