KMS of Xinjiang Astronomical Observatory, CAS
| Initiation and Eruption of a Two-turn Helical Quiescent Filament on 2013 August 2 | |
Ou,Yudi1,2; Su,Yingna1,2; Chen,Jialin2,3; Liu,Yanjie1,2; Shen,Jinhua4 ; Ji,Haisheng1,2
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| 2024-04-22 | |
| Source Publication | The Astrophysical Journal
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| ISSN | 0004-637X |
| Volume | 966Issue:1Pages:6 |
| Contribution Rank | 4 |
| Abstract | Abstract We investigate a quiescent filament that erupted on 2013 August 2; the eruption was observed in EUV and Hα by the Solar Dynamics Observatory and GONG. After a B9.7 flare in the nearby active region, the dark filament materials near its eastern footpoint start to move in the direction of eruption, and are followed by a counterclockwise rotation identified as the motion of a combination of dark and bright filament materials. Then the entire filament rises up and keeps rotating in a clockwise direction during the eruption. More interestingly, the filament exhibits an unusual two-helix structure near its western footpoint during the eruption, which indicates the existence of a highly twisted flux rope. This hypothesis is confirmed by magnetic field modeling using the flux rope insertion method. In the best-fit unstable model, the lower limits of the estimated maximum and average twist numbers of the erupting flux rope reach 7.5π and 4π, which suggests that kink instability plays an important role in the eruption. During these magnetically coupled sympathetic eruptions, the highly twisted filament under the western lobe of a pseudo-streamer-like structure becomes unstable and erupts due to the removal of confinement by magnetic reconnection at the overlying hyperbolic flux tube, which is initiated by the B9.7 flare in the nearby active region. The initial filament motion occurs at the more unstable eastern footpoint, where the surrounding fields are weaker and decrease with height more rapidly. |
| DOI | 10.3847/1538-4357/ad34b4 |
| Indexed By | SCI |
| Language | 英语 |
| WOS ID | WOS:001206073700001 |
| Publisher | The American Astronomical Society |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.xao.ac.cn/handle/45760611-7/6418 |
| Collection | 太阳物理研究团组 |
| Corresponding Author | Su,Yingna |
| Affiliation | 1.Key Laboratory of Dark Matter and Space Astronomy, Purple Mountain Observatory, Chinese Academy of Sciences, Nanjing 210023, People's Republic of China ynsu@pmo.ac.cn 2.School of Astronomy and Space Science, University of Science and Technology of China, Hefei, Anhui 230026, People's Republic of China 3.School of Physics and Electronic Engineering, Hanjiang Normal University, 8 South Beijing Road, Shiyan, Hubei 442000, People's Republic of China 4.Xinjiang Astronomical Observatory, Chinese Academy of Sciences, 150 Science 1-Street, Urumqi, Xinjiang 830011, People's Republic of China |
| Recommended Citation GB/T 7714 | Ou,Yudi,Su,Yingna,Chen,Jialin,et al. Initiation and Eruption of a Two-turn Helical Quiescent Filament on 2013 August 2[J]. The Astrophysical Journal,2024,966(1):6. |
| APA | Ou,Yudi,Su,Yingna,Chen,Jialin,Liu,Yanjie,Shen,Jinhua,&Ji,Haisheng.(2024).Initiation and Eruption of a Two-turn Helical Quiescent Filament on 2013 August 2.The Astrophysical Journal,966(1),6. |
| MLA | Ou,Yudi,et al."Initiation and Eruption of a Two-turn Helical Quiescent Filament on 2013 August 2".The Astrophysical Journal 966.1(2024):6. |
| Files in This Item: | ||||||
| File Name/Size | DocType | Version | Access | License | ||
| Ou-2024-Initiation a（16683KB） | 期刊论文 | 出版稿 | 开放获取 | CC BY-NC-SA | View Application Full Text | |
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