One-Minute Quasi-Periodic Pulsations Seen in a Solar Flare

doi:10.1007/s11207-016-1037-4

	One-Minute Quasi-Periodic Pulsations Seen in a Solar Flare
	Ning, Z.
刊名	SOLAR PHYSICS
	2017
卷号	292 期号:1 页码:17
关键词	Oscillations solar
ISSN号	0038-0938
DOI	10.1007/s11207-016-1037-4
通讯作者	Ning, Z.(ningzongjun@pmo.ac.cn)
英文摘要	We study quasi-periodic pulsations (QPPs) in the SOL2014-09-10 event that was detected by the Geostationary Operational Environmental Satellites (GOES), the Atmospheric Imaging Assembly (AIA) and the Extreme Ultraviolet Variability Experiment (EVE) onboard the Solar Dynamics Observatory (SDO), and the Gamma Ray Burst Monitor (GBM) onboard the Fermi satellite. Previous studies have found that this flare displays four-minute QPPs in a broad range of wavelengths. In this article, we find that this event also shows QPPs with a period of around one minute. Using the Fast Fourier Transform (FFT) method, the light curves are decomposed into fast- and slowly varying components with a separation at approximate to 100 seconds. The four-minute QPPs are in the slowly varying component, and the one-minute QPPs are identified with the fast-varying components in the impulsive and maximum phases. Similarly as the four-minute QPPs, the one-minute QPPs are simultaneously found in soft X-rays (SXR), extreme ultraviolet (EUV), and hard X-ray (HXR) emission. High correlations are found between the fast-varying components at the different wavelengths, especially between SXR and HXR. The spatial location of the sources of one-minute QPPs differ from those of the four-minute QPPs. The four-minute QPPs appear in the whole flare region, while the one-minute QPPs tend to originate from the flare loop footpoints. This finding provides an observational constraint for the physical origin of the QPPs.
WOS关键词	SLIPPING MAGNETIC RECONNECTION ; CORONAL LOOP OSCILLATIONS ; REGION-IMAGING-SPECTROGRAPH ; RAY BURST MONITOR ; MAGNETOHYDRODYNAMIC OSCILLATIONS ; CHROMOSPHERIC EVAPORATION ; MICROWAVE EMISSION ; RED NOISE ; RADIO ; SUMER
WOS研究方向	Astronomy & Astrophysics
语种	英语
出版者	SPRINGER
WOS记录号	WOS:000390708400011
内容类型	期刊论文
源URL	[http://libir.pmo.ac.cn/handle/332002/23380]
专题	中国科学院紫金山天文台
通讯作者	Ning, Z.
作者单位	Purple Mt Observ, Key Lab Dark Matter & Space Astron, Nanjing 210008, Jiangsu, Peoples R China
推荐引用方式 GB/T 7714	Ning, Z.. One-Minute Quasi-Periodic Pulsations Seen in a Solar Flare[J]. SOLAR PHYSICS,2017,292(1):17.
APA	Ning, Z..(2017).One-Minute Quasi-Periodic Pulsations Seen in a Solar Flare.SOLAR PHYSICS,292(1),17.
MLA	Ning, Z.."One-Minute Quasi-Periodic Pulsations Seen in a Solar Flare".SOLAR PHYSICS 292.1(2017):17.