Oscillatory Magnetic Reconnection at a Coronal Bright Point
文献类型：期刊论文
| 作者 | Hong JC(洪俊超)1 ; Yang JY(杨家艳)1; Bi Y(毕以)1,2; Yang B(杨波)1,2
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| 刊名 | ASTROPHYSICAL JOURNAL
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| 出版日期 | 2025-06-20 |
| 卷号 | 986期号:2 |
| ISSN号 | 0004-637X |
| DOI | 10.3847/1538-4357/addda9 |
| 产权排序 | 第1完成单位 |
| 文献子类 | Article |
| 英文摘要 | Coronal bright points (CBPs) are typical small-scale coronal brightenings that consist of a bundle of miniature coronal loops. Using the ultrahigh-resolution coronal images from the Extreme Ultraviolet Imager on board Solar Orbiter, we report the first observational evidence of oscillatory magnetic reconnection at a CBP. The reconnection is characterized by two bursty phases defined by a reconnection reversal. In the first phase, a current sheet (C1) was found to form in front of an expanding loop of the bright point. Interestingly, C1 shortened to a null point during 10 minutes after reaching its maximum length (similar to 2.4 Mm). Less than 3 minutes later, a new current sheet (C2) was clearly seen to grow out from the null point, but along an orthogonal direction relative to C1. C2 reached a maximum length of similar to 4 Mm in 10 minutes and then became short and invisible in the next few minutes as the reconnection declined. The magnetic reconnection is evidenced by the brightening, plasma flow, and temperature increase at the ends of both C1 and C2. No significant magnetic cancellation or emergence but gradual convergence occurred during the few hours before the reconnection underneath the CBP. The transition from C1 to C2 suggests the occurrence of coronal oscillatory reconnection, whereby the inflow and outflow regions in the first phase become the outflow and inflow regions in the second phase, respectively. It is further found that the oscillatory reconnection could slightly modulate the change in brightness of the CBP. We propose that oscillatory reconnection has the potential to continuously heat solar small-scale structures without destroying their overall magnetic configurations. |
| 学科主题 | 天文学 ; 太阳与太阳系 |
| URL标识 | 查看原文 |
| 出版地 | TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND |
| WOS关键词 | QUIET-SUN ; INTENSITY OSCILLATIONS ; TEMPORAL VARIATIONS ; SOLAR CORONA ; HOLE ; FLUX ; EVOLUTION ; FLARE ; MODEL ; MASS |
| 资助项目 | Strategic Priority Research Program of the Chinese Academy of Sciences[XDB0560000]; Natural Science Foundation of China[12173084]; Natural Science Foundation of China[12273108]; Natural Science Foundation of China[12273106]; Natural Science Foundation of China[12203097]; Yunnan Science Foundation of China[202401AT070071]; Yunnan Province Xing Dian Talent Support Program; Yunnan Revitalization Talent Support Program Innovation Team Project[202405AS350012]; CAS Light of West China Program; Yunnan Key Laboratory of Solar Physics and Space Science[202205AG070009] |
| WOS研究方向 | Astronomy & Astrophysics |
| 语种 | 英语 |
| WOS记录号 | WOS:001511122100001 |
| 出版者 | IOP Publishing Ltd |
| 资助机构 | Strategic Priority Research Program of the Chinese Academy of Sciences[XDB0560000] ; Natural Science Foundation of China[12173084, 12273108, 12273106, 12203097] ; Yunnan Science Foundation of China[202401AT070071] ; Yunnan Province Xing Dian Talent Support Program ; Yunnan Revitalization Talent Support Program Innovation Team Project[202405AS350012] ; CAS Light of West China Program ; Yunnan Key Laboratory of Solar Physics and Space Science[202205AG070009] |
| 版本 | 出版稿 |
| 源URL | [http://ir.ynao.ac.cn/handle/114a53/28381]  |
| 专题 | 云南天文台_太阳物理研究组 云南天文台_抚仙湖太阳观测站 |
| 通讯作者 | Hong JC(洪俊超) |
| 作者单位 | 1.Yunnan Observatories, Chinese Academy of Sciences, Kunming 650216, People's Republic of China; hjcsolar@ynao.ac.cn, yjy@ynao.ac.cn; 2.Yunnan Key Laboratory of Solar Physics and Space Science, Kunming 650216, People's Republic of China |
| 推荐引用方式 GB/T 7714 | Hong JC,Yang JY,Bi Y,et al. Oscillatory Magnetic Reconnection at a Coronal Bright Point[J]. ASTROPHYSICAL JOURNAL,2025,986(2). |
| APA | 洪俊超,杨家艳,毕以,&杨波.(2025).Oscillatory Magnetic Reconnection at a Coronal Bright Point.ASTROPHYSICAL JOURNAL,986(2). |
| MLA | 洪俊超,et al."Oscillatory Magnetic Reconnection at a Coronal Bright Point".ASTROPHYSICAL JOURNAL 986.2(2025). |
入库方式： OAI收割
来源：云南天文台
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