A Confined Two-peaked Solar Flare Observed by EAST and SDO  

作　　者：Liang Zhang Ruisheng Zheng Zhike Xue Changhui Rao Qing Lin Zhimao Du Jiawen Yao Libo Zhong Yao Chen 

机构地区：[1]Institute of Space Sciences,Shandong University,Weihai 264209,China [2]Yunnan Key Laboratory of the Solar physics and Space Science,Kunming 650011,China [3]Institute of Frontier and Interdisciplinary Science.Shandong University,Qingdao266237,China [4]Institute of Optics and Electronics,Chinese Academy of Sciences,Chengdu 610209,China [5]National Laboratory on Adaptive Optics,Chengdu610209,China [6]University of Chinese Academy of Sciences,Beijing 100049,China [7]Shanghai Astronomy Museum,Shanghai201306,China

出　　处：《Research in Astronomy and Astrophysics》2024年第4期71-83,共13页天文和天体物理学研究（英文版）

基　　金：supported by grants of the National Natural Foundation of China(NSFC12073016);the open topic of the Yunnan Key Laboratory of Solar Physics and Space Science(YNSPCC202217)。

摘　　要：The solar flare is one of the most violent explosions,and can disturb the near-Earth space weather.Except for commonly single-peaked solar flares in soft X-ray,some special flares show intriguing a two-peak feature that is deserved much more attentions.Here,we reported a confined two-peaked solar flare and analyzed the associated eruptions using high-quality observations from Educational Adaptive-optics Solar Telescope and Solar Dynamics Observatory.Before the flare,a magnetic flux rope(MFR)formed through partially tether-cutting reconnection between two sheared arches.The flare occurred after the MFR eruption that was confined by the overlying strong field.Interestingly,a small underlying filament immediately erupted,which was possibly destabilized by the flare ribbon.The successive eruptions were confirmed by the analysis of the emission measure and the reconnection fluxes.Therefore,we suggest that the two peaks of the confined solar flare are corresponding to two episodes of magnetic reconnection during the successive eruptions of the MFR and the underlying filament.

关 键 词：Sun:activity Sun:corona Sun:flares Sun:magnetic fields Sun:filaments prominences Online material:animations 

分 类 号：P18[天文地球—天文学]