| The Formation of a Multifilament System Driven by Photospheric Converging Motions in a Bipolar Sunspot | |
Li, Haitang1; Guo, Jinhan2,3; Cheng, Xin2,3; Zhou, Chang2,3; Yan XL(闫晓理)4 ; Chen, Jun5; Guo, Yang2,3; Oloketuyi, Jacob1; Ding, Mingde2,3; Liu, Yu1
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| 发表期刊 | ASTROPHYSICAL JOURNAL LETTERS
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| 2025-02-01 | |
| 卷号 | 979期号:2 |
| DOI | 10.3847/2041-8213/ada893 |
| 产权排序 | 第4完成单位 |
| 收录类别 | SCI |
| 摘要 | Solar filaments are believed to be a clump of cold plasma accumulated in the magnetic dips. However, the magnetic configuration of filaments and the key factors for their formation remains elusive. In this Letter, we present a detailed study of the formation and eruption of a multifilament system with observations and simulations. Before the filament appeared visible, the chromospheric fibrils gradually gathered together, evolving from a diffuse distribution into threadlike structures that were nearly parallel to the polarity inversion lines. On 2022 March 20, an arch filament first appeared showing high dynamics, and subsequently two reserved S-shaped filaments were visibly observed. These two filament segments further reconnected, forming a long coherent filament and resulting in a double-decker configuration. In addition, continuous converging motion and magnetic flux cancellation were found in the photosphere during the evolution. Simultaneously, more bald patch structures appeared at the polarities' collision position. Through a data-driven numerical simulation, we further reconstructed the coronal magnetic field, which is composed of two twisted magnetic flux ropes (MFRs) with their bottom touching the photosphere, along with a group of sheared arcades forming an X-shaped configuration. These findings suggest that the magnetic configuration of the filament is in a highly dynamic state, evolving from a hybrid to a coherent MFR. Moreover, we propose that the formation and eruption of the multifilament system are closely related to magnetic reconnection taking place on the photosphere and in the lower corona, respectively, both mainly driven by the photospheric converging motion. |
| 资助项目 | Sichuan Science and Technology Program[2025ZNSFSC0877]; National Natural Science Foundations of China (NSFC)[12373063]; China National Postdoctoral Program for Innovative Talents[BX20240159] |
| 项目资助者 | Sichuan Science and Technology Program[2025ZNSFSC0877] ; National Natural Science Foundations of China (NSFC)[12373063] ; China National Postdoctoral Program for Innovative Talents[BX20240159] |
| 语种 | 英语 |
| 学科领域 | 天文学 ; 太阳与太阳系 |
| 文章类型 | Article |
| 出版者 | IOP Publishing Ltd |
| 出版地 | TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND |
| ISSN | 2041-8205 |
| URL | 查看原文 |
| WOS记录号 | WOS:001408853100001 |
| WOS研究方向 | Astronomy & Astrophysics |
| WOS类目 | Astronomy & Astrophysics |
| 关键词[WOS] | MAGNETIC-FLUX ROPE ; FILAMENT CHANNELS ; SOLAR FILAMENT ; CANCELLATION ; FIELD ; EVOLUTION ; ORIGIN ; STABILITY ; ERUPTION ; FLOWS |
| 引用统计 | |
| 文献类型 | 期刊论文 |
| 版本 | 出版稿 |
| 条目标识符 | http://ir.ynao.ac.cn/handle/114a53/28068 |
| 专题 | 抚仙湖太阳观测和研究基地 |
| 作者单位 | 1.School of Physical Science and Technology, Southwest Jiaotong University, Chengdu 611756, People's Republic of China; [email protected], [email protected]; 2.School of Astronomy and Space Science, Nanjing University, Nanjing 210023, People's Republic of China; 3.Key Laboratory of Modern Astronomy and Astrophysics (Nanjing University), Ministry of Education, Nanjing 210023, People's Republic of China; 4.Yunnan Observatories, Chinese Academy of Sciences, Kunming 650216, People's Republic of China; 5.Purple Mountain Observatory, Chinese Academy of Sciences, Nanjing 210023, People's Republic of China |
| 推荐引用方式 GB/T 7714 | Li, Haitang,Guo, Jinhan,Cheng, Xin,et al. The Formation of a Multifilament System Driven by Photospheric Converging Motions in a Bipolar Sunspot[J]. ASTROPHYSICAL JOURNAL LETTERS,2025,979(2). |
| APA | Li, Haitang.,Guo, Jinhan.,Cheng, Xin.,Zhou, Chang.,闫晓理.,...&Liu, Yu.(2025).The Formation of a Multifilament System Driven by Photospheric Converging Motions in a Bipolar Sunspot.ASTROPHYSICAL JOURNAL LETTERS,979(2). |
| MLA | Li, Haitang,et al."The Formation of a Multifilament System Driven by Photospheric Converging Motions in a Bipolar Sunspot".ASTROPHYSICAL JOURNAL LETTERS 979.2(2025). |
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