VERY LONG-PERIOD PULSATIONS BEFORE THE ONSET OF SOLAR FLARES

	VERY LONG-PERIOD PULSATIONS BEFORE THE ONSET OF SOLAR FLARES
	Tan, Baolin1,2 ; Yu, Zhiqiang 2,3; Huang, Jing1,2 ; Tan, Chengming1,2 ; Zhang, Yin1
刊名	ASTROPHYSICAL JOURNAL
	2016-12-20
卷号	833 期号:2
关键词	plasmas stars: coronae Sun: atmosphere Sun: corona
英文摘要	Solar flares are the most powerful explosions occurring in the solar system, which may lead to disastrous space weather events and impact various aspects of our Earth. It remains a big challenge in modern astrophysics to understand the origin of solar flares and predict their onset. Based on the analysis of soft X-ray emission observed by the Geostationary Operational Environmental Satellite, this work reports a new discovery of very long-periodic pulsations occurring in the preflare phase before the onset of solar flares (preflare-VLPs). These pulsations typically have periods of 8-30 min and last for about 1-2 hr. They are possibly generated from LRC oscillations of plasma loops where electric current dominates the physical process during magnetic energy accumulation in the source region. Preflare-VLPs provide essential information for understanding the triggering mechanism and origin of solar flares, and may be a convenient precursory indicator to help us respond to solar explosions and the corresponding disastrous space weather events.
WOS标题词	Science & Technology ; Physical Sciences
类目[WOS]	Astronomy & Astrophysics
研究领域[WOS]	Astronomy & Astrophysics
关键词[WOS]	X-RAY MEASUREMENTS ; CORONAL LOOPS ; ELECTRIC-CURRENTS ; EMISSION MEASURES ; OSCILLATIONS ; EVENTS ; TEMPERATURES ; EXPRESSIONS
收录类别	SCI
语种	英语
WOS记录号	WOS:000391169600081
内容类型	期刊论文
源URL	[http://ir.bao.ac.cn/handle/114a11/6808]
专题	国家天文台_太阳物理研究部
作者单位	1.Chinese Acad Sci, Key Lab Solar Act, Natl Astron Observ, Beijing 100012, Peoples R China 2.Univ Chinese Acad Sci, Sch Astron & Space Sci, Beijing 100049, Peoples R China 3.Harbin Inst Technol, Dept Appl Phys, Harbin 15001, Heilongjiang, Peoples R China
推荐引用方式 GB/T 7714	Tan, Baolin,Yu, Zhiqiang,Huang, Jing,et al. VERY LONG-PERIOD PULSATIONS BEFORE THE ONSET OF SOLAR FLARES[J]. ASTROPHYSICAL JOURNAL,2016,833(2).
APA	Tan, Baolin,Yu, Zhiqiang,Huang, Jing,Tan, Chengming,&Zhang, Yin.(2016).VERY LONG-PERIOD PULSATIONS BEFORE THE ONSET OF SOLAR FLARES.ASTROPHYSICAL JOURNAL,833(2).
MLA	Tan, Baolin,et al."VERY LONG-PERIOD PULSATIONS BEFORE THE ONSET OF SOLAR FLARES".ASTROPHYSICAL JOURNAL 833.2(2016).