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Recurrent Jetlets Associated with the Disappearance of a Satellite Spot

文献类型：期刊论文

作者Yang LH(杨丽恒)6,7; Yan XL(闫晓理)6,7; Zhang, Jun5; Xue ZK(薛志科)6,7; Xu Z(徐喆)6,7; Wang JC(王金成)6,7; Hou, Yijun4; Zhou YA(周羿安)6,7; Kong DF(孔德芳)6,7; Umar, Roslan3
刊名ASTROPHYSICAL JOURNAL
出版日期2025-07-10
卷号987期号:2
ISSN号0004-637X
DOI10.3847/1538-4357/addac1
产权排序第1完成单位
文献子类Article
英文摘要Recurrent small-scale eruptions are fascinating phenomena in the solar atmosphere, characterized by repeated energy buildup and release over short time intervals. However, their underlying physical mechanisms remain unclear. On 2021 May 23, five recurrent jetlets (J1-J5) were observed continuously ejecting from a satellite spot located at the north edge of AR 12824. Using high-resolution, multiwavelength data from NVST, Solar Dynamics Observatory, and IRIS, we investigate the physical characteristics of these jetlets and their relationship with the satellite spot. The widths of these jetlets range from 1300 to 2900 km, their lifetimes range span 3-10 minutes, and their projection speeds vary from 152.8 to 406.0 km s-1. During the eruptions, the satellite spot moved northwest at a low speed of 376 +/- 12 m s-1. Its area gradually decreased due to magnetic cancellation with the surrounding positive magnetic field, resulting in an average cancellation rate of 1.3 x 1018 Mx hr-1. Dark lanes that separated from the satellite spot and small pores were observed to move toward nearby these features or dark lanes with opposite polarities, eventually disappearing during the magnetic cancellation process. J4 was driven by an eruption of a microfilament. Spectral observations revealed a redshift on the right side of J4 and a blueshift on the left side of its base, suggesting a counterclockwise rotation. The horizontal magnetic field of the satellite spot consistently exhibited a vortex structure throughout its evolution until it vanished. The nonlinear force-free field extrapolation confirms that the satellite spot serves as one footpoint of a mini-flux rope. These observations reveal that these jetlets might result from three-dimensional null-point magnetic reconnection, initiated by the continuous eruption of a mini-flux rope or multiple mini-flux ropes, driven by sustained magnetic cancellation.
学科主题天文学 ; 太阳与太阳系
URL标识查看原文
出版地TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND
WOS关键词X-RAY JETS ; MAGNETIC-FLUX CANCELLATION ; CORONAL MASS EJECTION ; H-ALPHA SURGES ; REGION-IMAGING-SPECTROGRAPH ; VACUUM SOLAR TELESCOPE ; BREAKOUT RECONNECTION ; CURRENT SHEET ; BLOWOUT JET ; QUIET SUN
资助项目Strategic Priority Research Program of the Chinese Academy of Sciences[XDB0560000]; National Natural Science of China[12325303]; National Natural Science of China[12433010]; National Natural Science of China[12173084]; National Natural Science of China[12273108]; National Natural Science of China[12273060]; National Natural Science of China[12473059]; National Natural Science of China[12203097]; National Natural Science of China[12303059]; Yunnan Science Foundation of China[202301AT070349]; Yunnan Science Foundation of China[202301AT070347]; Yunnan Science Foundation of China[202401AT070071]; Youth Innovation Promotion Association, CAS[2023063]; Open Research Program of Yunnan Key Laboratory of Solar Physics and Space Science[YNSPCC202211]; Open Research Program of Yunnan Key Laboratory of Solar Physics and Space Science[YNSPCC202212]; Young Elite Scientists Sponsorship Program by Yunnan Association for Science and Technology, Yunnan Revitalization Talent Support Program-Science & Technology Champion Project[202105AB160001]; Yunnan Provincial Department of Education Science Research Fund Project[2025J0945]; Chuxiong Normal University Doctoral Research Initiation Fund Project[BSQD2420]
WOS研究方向Astronomy & Astrophysics
语种英语
WOS记录号WOS:001524538200001
出版者IOP Publishing Ltd
资助机构Strategic Priority Research Program of the Chinese Academy of Sciences[XDB0560000] ; National Natural Science of China[12325303, 12433010, 12173084, 12273108, 12273060, 12473059, 12203097, 12303059] ; Yunnan Science Foundation of China[202301AT070349, 202301AT070347, 202401AT070071] ; Youth Innovation Promotion Association, CAS[2023063] ; Open Research Program of Yunnan Key Laboratory of Solar Physics and Space Science[YNSPCC202211, YNSPCC202212] ; Young Elite Scientists Sponsorship Program by Yunnan Association for Science and Technology, Yunnan Revitalization Talent Support Program-Science & Technology Champion Project[202105AB160001] ; Yunnan Provincial Department of Education Science Research Fund Project[2025J0945] ; Chuxiong Normal University Doctoral Research Initiation Fund Project[BSQD2420]
版本出版稿
源URL[http://ir.ynao.ac.cn/handle/114a53/28403]  
专题云南天文台_抚仙湖太阳观测站
通讯作者Yang LH(杨丽恒)
作者单位1.School of Physics, Electrical and Energy Engineering, Chuxiong Normal University, Chuxiong 675000, People’s Republic of China
2.Department of Physics, Yunnan University, Kunming, Yunnan 650091, People’s Republic of China;
3.East Coast Environmental Research Institute (ESERI), Universiti Sultan Zainal Abidin, 21300 Kuala Nerus, Terengganu, Malaysia;
4.National Astronomical Observatories, Chinese Academy of Sciences, Beijing 100101, People’s Republic of China;
5.School of Physics and Optoelectronics Engineering, Anhui University, Hefei 230601, People’s Republic of China;
6.Yunnan Key Laboratory of Solar Physics and Space Science, Kunming 650216, People’s Republic of China​;
7.Yunnan Observatories, Chinese Academy of Sciences, Kunming 650216, People’s Republic of China; yangliheng@ynao.ac.cn;
推荐引用方式
GB/T 7714		 Yang LH,Yan XL,Zhang, Jun,et al. Recurrent Jetlets Associated with the Disappearance of a Satellite Spot[J]. ASTROPHYSICAL JOURNAL,2025,987(2).
APA 杨丽恒.,闫晓理.,Zhang, Jun.,薛志科.,徐喆.,...&Yang, Liping.(2025).Recurrent Jetlets Associated with the Disappearance of a Satellite Spot.ASTROPHYSICAL JOURNAL,987(2).
MLA 杨丽恒,et al."Recurrent Jetlets Associated with the Disappearance of a Satellite Spot".ASTROPHYSICAL JOURNAL 987.2(2025).

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来源：云南天文台

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