Fast Reconnection in a Coronal Torn Plasma Sheet
文献类型：期刊论文
| 作者 | Tang ZH(汤泽浩)1,2,3 |
| 刊名 | ASTROPHYSICAL JOURNAL
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| 出版日期 | 2026-04-10 |
| 卷号 | 1001期号:1 |
| ISSN号 | 0004-637X |
| DOI | 10.3847/1538-4357/ae4d49 |
| 产权排序 | 第1完成单位 |
| 文献子类 | Article |
| 英文摘要 | Tearing instability, also known as plasmoid instability, is an effective mechanism for accelerating the magnetic reconnection process, and works in a wide range of magnetized plasma systems with different spatial scales, ionization degrees, and collisionalities. However, due to observational limitations, observations of plasma-sheet tearing and the resulting plasmoids remain rather scarce. This scarcity significantly hinders our understanding of the role of plasmoids in the reconnection process from an observational perspective. Using high-spatiotemporal, multiwavelength observations from the Solar Dynamics Observatory, we trace the entire evolution of a coronal plasma sheet. Its formation is driven by the emergence of photospheric magnetic flux, followed by tearing and eventual decay. The evolution of the plasma sheet exhibits two distinct stages. Initially, it rises rapidly, lengthens, and undergoes tearing at a low frequency. Subsequently, its ascent slows, it begins to shorten, and tearing occurs more frequently. A detailed analysis of the reconnecting plasma sheet focuses on heating, plasmoid dynamics (formation and ejection), and the resulting changes in the reconnection rate. Two key heating processes are identified: plasma-sheet tearing and coalescence involving plasmoids and magnetic cusps. More importantly, combining observations with analytical studies suggests that plasmoids act as key carriers of magnetic flux, rapidly transporting it within the observed torn plasma sheet, and their formation and ejection significantly enhance the reconnection rate and facilitate the onset of fast reconnection. |
| 学科主题 | 天文学 ; 太阳与太阳系 |
| URL标识 | 查看原文 |
| 出版地 | No.2 The Distillery, Glassfields, Avon Street, Bristol, ENGLAND |
| WOS关键词 | CANCELLATION NANOFLARE MODEL ; HIGH-RESOLUTION OBSERVATIONS ; EMERGING ACTIVE-REGION ; SCALE FLUX EMERGENCE ; MAGNETIC RECONNECTION ; SOLAR-FLARE ; X-RAY ; PARTICLE-ACCELERATION ; EJECTIONS ; DRIVEN |
| 资助项目 | Harbin Institute of Technology; National Key R&D Program of China[2024YFA16112001]; Strategic Priority Research Program of the Chinese Academy of Sciences[XDB0560000]; National Natural Science Foundation of China (NSFC)[12325303]; Yunnan Key Laboratory of Solar Physics and Space Science[202205AG070009]; Yunnan Fundamental Research Projects[202301AT070347]; Yunnan Fundamental Research Projects[202301AT070349] |
| WOS研究方向 | Astronomy & Astrophysics |
| 语种 | 英语 |
| WOS记录号 | WOS:001730793900001 |
| 出版者 | IOP Publishing Ltd |
| 资助机构 | Harbin Institute of Technology ; National Key R&D Program of China[2024YFA16112001] ; Strategic Priority Research Program of the Chinese Academy of Sciences[XDB0560000] ; National Natural Science Foundation of China (NSFC)[12325303] ; Yunnan Key Laboratory of Solar Physics and Space Science[202205AG070009] ; Yunnan Fundamental Research Projects[202301AT070347, 202301AT070349] |
| 版本 | 出版稿 |
| 源URL | [http://ir.ynao.ac.cn/handle/114a53/29084]  |
| 专题 | 云南天文台_抚仙湖太阳观测站 |
| 通讯作者 | Tang ZH(汤泽浩) |
| 作者单位 | 1.Yunnan Observatories, Chinese Academy of Sciences, Kunming 650216, People’s Republic of China; tangzh@ynao.ac.cn; 2.Yunnan Key Laboratory of Solar Physics and Space Science, Kunming 650216, People’s Republic of China 3.University of Chinese Academy of Sciences, Beijing 100049, People’s Republic of China; |
| 推荐引用方式 GB/T 7714 | Tang ZH. Fast Reconnection in a Coronal Torn Plasma Sheet[J]. ASTROPHYSICAL JOURNAL,2026,1001(1). |
| APA | 汤泽浩.(2026).Fast Reconnection in a Coronal Torn Plasma Sheet.ASTROPHYSICAL JOURNAL,1001(1). |
| MLA | 汤泽浩."Fast Reconnection in a Coronal Torn Plasma Sheet".ASTROPHYSICAL JOURNAL 1001.1(2026). |
入库方式： OAI收割
来源：云南天文台
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