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Meso-scale photospheric convection during chromospheric fan-shaped surge on light bridge

文献类型：期刊论文

作者Zhang, Yuzong1,2,3; Zhang, Jun2,4; Cao, Wenda5,6; Yang, Shuhong1,2,3; Yang, Yunfei7; Su, Jiangtao1,2,3; Kitai, Reizaburo8; Mao, Xinjie9; Yuan, Ding3,10; Huang, Xin3
刊名Discover Applied Sciences
出版日期2025-05
卷号7期号:5
关键词Photosphere Chromosphere Sunspot Light bridge Grain Dynamics Surge Magnetic felds
DOI10.1007/s42452-025-06873-x
产权排序第13完成单位
文献子类Journal article (JA)
英文摘要Recently, intermittent and aperiodic fan-shaped chromospheric surges have attracted significant attention, though their related photospheric dynamic signals remain unclear. This study examines seven such surges and their potential photospheric signals along a light bridge (LB) in NOAA AR 12371 over a period of 100 min using BBSO/GST observations. Each surge displays as dark, jet-like structures with nearly uniform amplitudes, aligned closely along the LB to form a long smooth upper edge. Simultaneously, the photospheric LB exhibits dynamic grains, including bright points and granules. Adjacent grains brighten, expand, and merge into a ‘grain group’ (GG), which span LB’s cross-section. As GG moves along the LB, its leading edge develops an arched structure. During GG formation, the local horizontal magnetic field direction undergoes significant deflection. Within the 100-min interval, 10 GGs were recorded, occurring intermittently and aperiodically. Notably, three photospheric GG-free intervals corresponded to three chromospheric surge-free intervals, with a temporal delay (80–712 s) between GG reappearance and surge recurrence. Our findings suggest that meso-scale photospheric GGs, larger than individual granules but smaller than the full extent of the LB, are closely related to chromospheric surges. A conceptual model integrating inverse turbulent cascades and flux tube interactions is proposed, unifying multi-scale energy transfer from photospheric convection to chromospheric reconnection. © The Author(s) 2025.
学科主题天文学 ; 太阳与太阳系
URL标识查看原文
资助项目N/A
语种英语
资助机构N/A
源URL[http://ir.ynao.ac.cn/handle/114a53/28284]  
专题天文技术实验室
作者单位1.National Astronomical Observatories, Chinese Academy of Sciences, Beijing, 100101, China;
2.School of Astronomy and Space Science, Chinese Academy of Sciences, Beijing, 100049, China;
3.State Key Laboratory of Solar Activity and Space Weather, National Space Science Center, Beijing, 100190, China;
4.School of Physics and Materials Science, Anhui University, Hefei, 230601, China;
5.Big Bear Solar Observatory, New Jersey Institute of Technology, Big Bear City, CA, 92314, United States;
6.Center for Solar-Terrestrial Research, New Jersey Institute of Technology, 323 Martin Luther King Boulevard, Newark, NJ, 07102, United States;
7.Faculty of Information Engineering and Automation, Kunming University of Science and Technology, Kunming, 650050, China;
8.Ritsumeikan University, 56-1 Toujiinkita-cyou, Kita-ku, Kyoto, 603-8587, Japan;
9.Department of Astronomy, Beijing Normal University, Beijing, 100875, China;
10.Institute of Space Science and Applied Technology, Harbin Institute of Technology, Shenzhen, 518055, China;
推荐引用方式
GB/T 7714		 Zhang, Yuzong,Zhang, Jun,Cao, Wenda,et al. Meso-scale photospheric convection during chromospheric fan-shaped surge on light bridge[J]. Discover Applied Sciences,2025,7(5).
APA Zhang, Yuzong.,Zhang, Jun.,Cao, Wenda.,Yang, Shuhong.,Yang, Yunfei.,...&季凯帆.(2025).Meso-scale photospheric convection during chromospheric fan-shaped surge on light bridge.Discover Applied Sciences,7(5).
MLA Zhang, Yuzong,et al."Meso-scale photospheric convection during chromospheric fan-shaped surge on light bridge".Discover Applied Sciences 7.5(2025).

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来源：云南天文台

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