Extreme space weather events caused by super active regions during solar cycles 21-24

作     者：Gui-Ming Le Gui-Ang Liu Ming-Xian Zhao Tian Mao Ping-Guo Xu Gui-Ming Le;Gui-Ang Liu;Ming-Xian Zhao;Tian Mao;Ping-Guo Xu

作者机构：School of Physics Science&TechnologyLingnan Normal UniversityZhanjiang 524048China Key Laboratory of Space WeatherNational Center for Space WeatherChina Meteorological AdministrationBeijing 100081China Beijing Engineering Research Center of Smart Mechanical Innovation Design ServiceBeijing 100020China 

出 版 物：《Research in Astronomy and Astrophysics》 (天文和天体物理学研究（英文版）)

年 卷 期：2021年第21卷第5期

页      面：296-300,302页

核心收录：

学科分类：070802[理学-空间物理学] 07[理学] 0708[理学-地球物理学] 070401[理学-天体物理] 0704[理学-天文学] 

基　　金：This work was supported by the National Natural Science Foundation of China(Grant Nos.41774085 41074132 41274193 41474166 41774195 and 41874187) 

主　　题：Sun:sunspots Sun:flares Sun:particle emission Sun:solar-terrestrial relations 

摘      要：Extreme space weather events including≥X5.0 flares,ground level enhancement(GLE)events and super geomagnetic storms(Dst≥-250 nT)caused by super active regions(SARs)during solar cycles 21-24 were *** total number ofX5.0 solar flares was 62,among which 41 were X5.0-X9.9 flares and 21 were≥X10.0 *** found that 83.9%of the≥X5.0 flares were produced by SARs;78.05%of the X5.0-X9.9 and 95.24%of the≥X10.0 solar flares were produced by SARs;46 GLEs were registered during solar cycles 21-24,and 25 GLEs were caused by SARs,indicating that 54.3%of the GLEs were caused by SARs;24 super geomagnetic storms were recorded during solar cycles 21-24,and 12 of them were caused by SARs,namely 50%of the super geomagnetic storms were caused by *** ascertained that only 29 SARs produced≥X5.0 flares,15 SARs generated GLEs and 10 SARs triggered super geomagnetic *** the 51 SARs,only 33 SARs produced at least one extreme space weather event,while none of the other 18 SARs could trigger an extreme space weather *** were only four SARs and each of them generated not only a≥X5.0 flare,but also a GLE event and a super geomagnetic *** of the extreme space weather events caused by the SARs appeared during solar cycles 22 and 23,especially for GLE events and super geomagnetic *** longitudinal distributions of source locations for the extreme space weather events caused by SARs were also studied.