Very Long-periodic Pulsations Detected Simultaneously in a White-light Flare and Sunspot Penumbra

doi:10.3847/2041-8213/ad6cde

YNAO OpenIR > 抚仙湖太阳观测和研究基地

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