The observational evidence on the loop-loop interaction in a flare-CME event on April 15, 1998

CORC > 紫金山天文台 > 中国科学院紫金山天文台 > 太阳活动的多波段观测研究团组

	The observational evidence on the loop-loop interaction in a flare-CME event on April 15, 1998
	Wu, GP ; Huang, GL ; Tang, YH ; Xu, AA
刊名	SOLAR PHYSICS
	2005-04-01
卷号	227 期号:2 页码:327-337
关键词	SOLAR-FLARES PARTICLE-ACCELERATION MAGNETIC RECONNECTION RADIO-BURSTS COALESCENCE TELESCOPE NOBEYAMA MISSION
ISSN号	0038-0938
英文摘要	The evolution of the soft X-ray and EUV coronal loops related to the April 15, 1998 solar flare-CME event is studied with multiwavelength observations including hard X-rays (BATSE), microwaves (NoRP, CNAO) and magnetograms (SOHO/MDI), as well as images from Yohkoh/SXT and SOHO/EIT at 195 angstrom. It is shown that: (1) two soft X-ray and EUV loops rose, crossed and turned bright, (2) near one footpoint of these loops, the background magnetic field decreased, (3) there were similar quasi periodic oscillations in the time profiles of hard X-ray and microwave emissions, which characterized the loop-loop coalescence instability, (4) after the loop-loop reconnection, two new loops formed, the small one stayed at the original place, and the large one ejected out as part of the constructed prominence cloud. Based upon these observations, we argue that the decrease of the background magnetic field near these loops caused them to rise and approach each other, and in turn, the fast loop-loop coalescence instability took place and triggered the flare and the CME.
学科主题	Astronomy & Astrophysics
WOS标题词	Science & Technology ; Physical Sciences
类目[WOS]	Astronomy & Astrophysics
研究领域[WOS]	Astronomy & Astrophysics
关键词[WOS]	SOLAR-FLARES ; PARTICLE-ACCELERATION ; MAGNETIC RECONNECTION ; RADIO-BURSTS ; COALESCENCE ; TELESCOPE ; NOBEYAMA ; MISSION
收录类别	SCI
语种	英语
WOS记录号	WOS:000230319900010
公开日期	2012-03-07
内容类型	期刊论文
源URL	[http://159.226.72.40/handle/332002/4140]
专题	紫金山天文台_太阳活动的多波段观测研究团组
作者单位	1.SE Univ, Dept Phys, Nanjing 210096, Peoples R China 2.Chinese Acad Sci, Purple Mt Observ, Nanjing 210008, Peoples R China 3.Nanjing Univ, Dept Astron, Nanjing 210093, Peoples R China
推荐引用方式 GB/T 7714	Wu, GP,Huang, GL,Tang, YH,et al. The observational evidence on the loop-loop interaction in a flare-CME event on April 15, 1998[J]. SOLAR PHYSICS,2005,227(2):327-337.
APA	Wu, GP,Huang, GL,Tang, YH,&Xu, AA.(2005).The observational evidence on the loop-loop interaction in a flare-CME event on April 15, 1998.SOLAR PHYSICS,227(2),327-337.
MLA	Wu, GP,et al."The observational evidence on the loop-loop interaction in a flare-CME event on April 15, 1998".SOLAR PHYSICS 227.2(2005):327-337.