Reconstructing 3D Magnetic Topology of On-disk Prominence Bubbles from Stereoscopic Observations
文献类型：期刊论文
| 作者 | Guo,Yilin1,3; Hou,Yijun1,3; Li,Ting1,3 ; Zhang,Jun2
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| 刊名 | The Astrophysical Journal Letters
 |
| 出版日期 | 2021-04-01 |
| 卷号 | 911期号:1 |
| 关键词 | Solar atmosphere Solar filaments Solar magnetic fields Solar prominences |
| ISSN号 | 2041-8205 |
| DOI | 10.3847/2041-8213/abee92 |
| 英文摘要 | Abstract Bubbles, the semi-circular voids below quiescent prominences (filaments), have been extensively investigated in the past decade. However, to this point the magnetic nature of bubbles has been unverifiable due to the lack of on-disk photospheric magnetic field observations. Here for the first time, we find and investigate an on-disk prominence bubble around a filament barb on 2019 March 18 based on stereoscopic observations from the New Vacuum Solar Telescope (NVST), Solar Dynamics Observatory (SDO), and Spacecraft-A of the Solar TErrestrial RElations Observatory (STEREO-A). In high-resolution NVST Hα images, this bubble has a sharp arch-like boundary and a projected width of ～26 Mm. Combining SDO and STEREO-A images, we further reconstruct 3D structure of the bubble boundary, whose maximum height is ～15.6 Mm. The squashing factor Q map deduced from extrapolated 3D magnetic fields around the bubble depicts a distinct arch-shaped interface with a height of ～11 Mm, which agrees well with the reconstructed 3D structure of the observed bubble boundary. Under the interface lies a set of magnetic loops, which is rooted on a surrounding photospheric magnetic patch. To be more persuasive, another on-disk bubble on 2019 June 10 is presented as a supplement. According to these results obtained from on-disk bubble observations, we suggest that the bubble boundary corresponds to the interface between the prominence dips (barb) and the underlying magnetic loops rooted nearby. Therefore, it is reasonable to speculate that the bubble can form around a filament barb below which there is a photospheric magnetic patch. |
| 语种 | 英语 |
| WOS记录号 | IOP:2041-8205-911-1-ABEE92 |
| 出版者 | The American Astronomical Society |
| 源URL | [http://ir.bao.ac.cn/handle/114a11/59335]  |
| 专题 | 中国科学院国家天文台 |
| 通讯作者 | Hou,Yijun |
| 作者单位 | 1.CAS Key Laboratory of Solar Activity, National Astronomical Observatories, Chinese Academy of Sciences, Beijing 100101, People’s Republic of China yijunhou@nao.cas.cn 2.School of Physics and Materials Science, Anhui University, Hefei 230601, People’s Republic of China; zjun@ahu.edu.cn 3.School of Astronomy and Space Science, University of Chinese Academy of Sciences, Beijing 100049, People’s Republic of China |
| 推荐引用方式 GB/T 7714 | Guo,Yilin,Hou,Yijun,Li,Ting,et al. Reconstructing 3D Magnetic Topology of On-disk Prominence Bubbles from Stereoscopic Observations[J]. The Astrophysical Journal Letters,2021,911(1). |
| APA | Guo,Yilin,Hou,Yijun,Li,Ting,&Zhang,Jun.(2021).Reconstructing 3D Magnetic Topology of On-disk Prominence Bubbles from Stereoscopic Observations.The Astrophysical Journal Letters,911(1). |
| MLA | Guo,Yilin,et al."Reconstructing 3D Magnetic Topology of On-disk Prominence Bubbles from Stereoscopic Observations".The Astrophysical Journal Letters 911.1(2021). |
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来源：国家天文台
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