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

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

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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.

Sun:activitySun:coronaSun:flaresSun:magnetic fieldsSun:filamentsprominences Online material:animations

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

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Institute of Space Sciences,Shandong University,Weihai 264209,China

Yunnan Key Laboratory of the Solar physics and Space Science,Kunming 650011,China

Institute of Frontier and Interdisciplinary Science,Shandong University,Qingdao 266237,China

Institute of Optics and Electronics,Chinese Academy of Sciences,Chengdu 610209,China

National Laboratory on Adaptive Optics,Chengdu 610209,China

University of Chinese Academy of Sciences,Beijing 100049,China

Shanghai Astronomy Museum,Shanghai 201306,China

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National Natural Foundation of Chinaopen topic of the Yunnan Key Laboratory of Solar Physics and Space Science

NSFC 12073016YNSPCC202217

2024

10.1088/1674-4527/ad18d1

天文和天体物理学研究
中国科学院国家天文台

天文和天体物理学研究

CSTPCD
影响因子：0.406
ISSN：1674-4527
年,卷(期)：2024.24(4)