| Very Long-periodic Pulsations Detected Simultaneously in a White-light Flare and Sunspot Penumbra |
| Li, Dong1,2; Wang JC(王金成)2,3 ; Huang, Yu1
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| 发表期刊 | ASTROPHYSICAL JOURNAL LETTERS
(IF:6.634[JCR-2017],5.572[5-Year]) |
| 2024-09-01
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| 卷号 | 972期号:1 |
| DOI | 10.3847/2041-8213/ad6cde
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| 产权排序 | 第3完成单位
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| 收录类别 | SCI
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| 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. |
| 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]
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| 项目资助者 | 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]
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| 语种 | 英语
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| 学科领域 | 天文学
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| 文章类型 | Article
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| 出版者 | IOP Publishing Ltd
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| 出版地 | TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND
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| ISSN | 2041-8205
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| URL | 查看原文
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| WOS记录号 | WOS:001295473200001
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| WOS研究方向 | Astronomy & Astrophysics
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| WOS类目 | Astronomy & Astrophysics
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| 关键词[WOS] | HARD X-RAY
; DOPPLER-SHIFT OSCILLATIONS
; STATISTICAL PROPERTIES
; LY-ALPHA
; ASO-S
; SOLAR
; CONTINUUM
; WAVES
; EMISSIONS
; SUPERFLARES
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| 引用统计 |
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| 文献类型 | 期刊论文
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| 版本 | 出版稿
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| 条目标识符 | http://ir.ynao.ac.cn/handle/114a53/27560
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| 专题 | 抚仙湖太阳观测和研究基地
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| 作者单位 | 1.Key Laboratory of Dark Matter and Space Astronomy, Purple Mountain Observatory, CAS, Nanjing 210023, People's Republic of China; lidong@pmo.ac.cn;
2.Yunnan Key Laboratory of the Solar physics and Space Science, Kunming 650216, People's Republic of China;
3.Yunnan Observatories, Chinese Academy of Sciences, Kunming 650216, People's Republic of China
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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).
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| 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).
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| 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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