Very Long-periodic Pulsations Detected Simultaneously in a White-light Flare and Sunspot Penumbra
文献类型：期刊论文
| 作者 | Li, Dong2,3; Wang JC(王金成)1,2 ; Huang, Yu3
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| 刊名 | ASTROPHYSICAL JOURNAL LETTERS
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| 出版日期 | 2024-09-01 |
| 卷号 | 972期号:1 |
| ISSN号 | 2041-8205 |
| DOI | 10.3847/2041-8213/ad6cde |
| 产权排序 | 第3完成单位 |
| 文献子类 | Article |
| 英文摘要 | We investigate the origin of very long-periodic pulsations in the white-light emission of an X6.4 flare on 2024 February 22 (SOL2024-02-22T22:08), which occurred at the edge of a sunspot group. The flare white-light fluxes reveal four successive and repetitive pulsations, which are simultaneously measured by the Helioseismic and Magnetic Imager and the White-light Solar Telescope. A quasi-period of 8.6(-1.9)(+1.5) minutes, determined by the Morlet wavelet transform, is detected in the visible continuum channel. The modulation depth, which is defined as the ratio between the oscillatory amplitude and its long-term trend, is smaller than 0.1%, implying that the quasi-periodic pulsation (QPP) feature is a weak wave process. Imaging observations show that the X6.4 flare occurs near a sunspot group. Moreover, the white-light brightening is located in sunspot penumbra, and a similar quasi-period of about 8.5 (+1.6)(-1.8) minutes is identified in one penumbral location of the nearest sunspot. The map of Fourier power distribution suggests that a similar periodicity is universally existing in most parts of the penumbra that is close to the penumbral-photospheric boundary. Our observations support the scenario that the white-light QPP is probably modulated by the slow-mode magnetoacoustic gravity wave leaking from the sunspot penumbra. |
| 学科主题 | 天文学 |
| URL标识 | 查看原文 |
| 出版地 | TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND |
| WOS关键词 | HARD X-RAY ; DOPPLER-SHIFT OSCILLATIONS ; STATISTICAL PROPERTIES ; LY-ALPHA ; ASO-S ; SOLAR ; CONTINUUM ; WAVES ; EMISSIONS ; SUPERFLARES |
| 资助项目 | Strategic Priority Research Program of the Chinese Academy of Sciences[XDB0560000]; National Key R&D Program of China[2021YFA1600502 (2021YFA1600500)]; National Key R&D Program of China[2022YFF0503002 (2022YFF0503000)]; Yunnan Key Laboratory of Solar Physics and Space Science[YNSPCC202207]; Strategic Priority Research Program on Space Science, the Chinese Academy of Sciences[XDA15320000] |
| WOS研究方向 | Astronomy & Astrophysics |
| 语种 | 英语 |
| WOS记录号 | WOS:001295473200001 |
| 出版者 | IOP Publishing Ltd |
| 资助机构 | Strategic Priority Research Program of the Chinese Academy of Sciences[XDB0560000] ; National Key R&D Program of China[2021YFA1600502 (2021YFA1600500), 2022YFF0503002 (2022YFF0503000)] ; Yunnan Key Laboratory of Solar Physics and Space Science[YNSPCC202207] ; Strategic Priority Research Program on Space Science, the Chinese Academy of Sciences[XDA15320000] |
| 版本 | 出版稿 |
| 源URL | [http://ir.ynao.ac.cn/handle/114a53/27560]  |
| 专题 | 云南天文台_抚仙湖太阳观测站 |
| 作者单位 | 1.Yunnan Observatories, Chinese Academy of Sciences, Kunming 650216, People's Republic of China 2.Yunnan Key Laboratory of the Solar physics and Space Science, Kunming 650216, People's Republic of China; 3.Key Laboratory of Dark Matter and Space Astronomy, Purple Mountain Observatory, CAS, Nanjing 210023, People's Republic of China; lidong@pmo.ac.cn; |
| 推荐引用方式 GB/T 7714 | Li, Dong,Wang JC,Huang, Yu. Very Long-periodic Pulsations Detected Simultaneously in a White-light Flare and Sunspot Penumbra[J]. ASTROPHYSICAL JOURNAL LETTERS,2024,972(1). |
| APA | Li, Dong,王金成,&Huang, Yu.(2024).Very Long-periodic Pulsations Detected Simultaneously in a White-light Flare and Sunspot Penumbra.ASTROPHYSICAL JOURNAL LETTERS,972(1). |
| MLA | Li, Dong,et al."Very Long-periodic Pulsations Detected Simultaneously in a White-light Flare and Sunspot Penumbra".ASTROPHYSICAL JOURNAL LETTERS 972.1(2024). |
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来源：云南天文台
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