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The Effect of Solar Wind Mach Numbers on the Occurrence Rate of Flux Transfer Events at the Dayside Magnetopause
Chen, C.1,2; Sun, T.R.1; Wang, C.1,3; Huang, Z.H.1; Tang, B.B.1; Guo, X.C.1
Department空间科学部
Source PublicationGeophysical Research Letters
2019
Volume46Issue:8Pages:4106-4113
DOI10.1029/2018GL081676
ISSN0094-8276
Language英语
Abstract

Although many works have investigated the occurrence rate of flux transfer events (FTEs) under different upstream conditions, the relation between the upstream Mach number and the occurrence rate of FTEs remains unclear. By using global magnetohydrodynamics simulations, we study the occurrence rate of FTEs under different upstream Alvénic Mach numbers (MA). A recently developed method is used to identify the FTEs throughout the dayside magnetopause. It shows that the occurrence rate of FTEs decreases with increasing value of MA. We suggest that the magnetosheath β, which increases with increasing MA, plays an important role in the process of reconnection and thus affects the occurrence rate of FTEs. As the solar wind MA increases with increasing distance from the Sun, we speculate that the planet with a larger heliocentric distance may have less FTEs because of the increasing value of upstream MA. ©2019. American Geophysical Union. All Rights Reserved.

Indexed BySCI ; EI
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Document Type期刊论文
Identifierhttp://ir.nssc.ac.cn/handle/122/7022
Collection空间科学部
Affiliation1.State Key Laboratory of Space Weather, National Space Science Center, Chinese Academy of Sciences, Beijing, China;
2.Now at School of Earth and Atmospheric Sciences, Georgia Institute of Technology, Atlanta; GA, United States;
3.College of Earth and Planetary Sciences, University of Chinese Academy of Sciences, Beijing, China
Recommended Citation
GB/T 7714
Chen, C.,Sun, T.R.,Wang, C.,et al. The Effect of Solar Wind Mach Numbers on the Occurrence Rate of Flux Transfer Events at the Dayside Magnetopause[J]. Geophysical Research Letters,2019,46(8):4106-4113.
APA Chen, C.,Sun, T.R.,Wang, C.,Huang, Z.H.,Tang, B.B.,&Guo, X.C..(2019).The Effect of Solar Wind Mach Numbers on the Occurrence Rate of Flux Transfer Events at the Dayside Magnetopause.Geophysical Research Letters,46(8),4106-4113.
MLA Chen, C.,et al."The Effect of Solar Wind Mach Numbers on the Occurrence Rate of Flux Transfer Events at the Dayside Magnetopause".Geophysical Research Letters 46.8(2019):4106-4113.
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