H alpha dimming associated with the eruption of a coronal sigmoid in the quiet sun

	H alpha dimming associated with the eruption of a coronal sigmoid in the quiet sun
	Jiang YC(姜云春); Chen HD(陈华东); Shen YD(申远灯); Yang LH(杨丽恒); Li KJ(李可军)
刊名	SOLAR PHYSICS
	2007-01
卷号	240 期号:1 页码:77-87
ISSN号	0038-0938
通讯作者	Jiang, YC (reprint author), Chinese Acad Sci, Natl Astron Observ, Yunnan Astron Observ, POB 110, Kunming 650011, Peoples R China.
产权排序	第一完成单位
英文摘要	We report on the occurrence of H alpha dimming associated with a sigmoid eruption in a quiet-sun region on 14 August 2001. The coronal sigmoid in soft X-ray images from the Yohkoh Soft X-ray Telescope was located over an H alpha filament channel. Its eruption was accompanied by a flare of GOES X-ray class C2.3 and possibly associated with a halo coronal mass ejection (CME) observed with the Large Angle and Spectroscopic Coronagraphs (LASCO) on board the Solar and Heliospheric Observatory (SOHO). During the eruption, coronal bipolar double dimming took place at the regions with opposite magnetic polarities around the two sigmoid ends, but the underlying chromospheric channel did not show observable changes corresponding to the coronal eruption. Different from the erupting coronal sigmoid itself, however, the coronal dimming had a detectable chromosphere counterpart, i.e., H alpha dimming. By regarding the sigmoid as a coronal sign for a flux rope, these observations are explained in the framework of the flux rope model of CMEs. The flux rope is possibly deeply rooted in the chromosphere, and the coronal and H alpha dimming regions mark its evacuated feet, through which the material is possibly fed to the halo 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]	MASS EJECTION ; FILAMENT ERUPTION ; SOLAR-FLARE ; TELESCOPE ; MISSION ; CME
收录类别	SCI
原文出处	http://link.springer.com/article/10.1007%2Fs11207-006-0257-4
语种	英语
WOS记录号	WOS:000244954600009
公开日期	2016-05-03
内容类型	期刊论文
源URL	[http://ir.ynao.ac.cn/handle/114a53/6115]
专题	云南天文台_太阳物理研究组
作者单位	National Astronomical Observatory/Yunnan Astronomical Observatory, Chinese Academy of Sciences, P.O. Box 110, Kunming, 650011, China
推荐引用方式 GB/T 7714	Jiang YC,Chen HD,Shen YD,et al. H alpha dimming associated with the eruption of a coronal sigmoid in the quiet sun[J]. SOLAR PHYSICS,2007,240(1):77-87.
APA	Jiang YC,Chen HD,Shen YD,Yang LH,&Li KJ.(2007).H alpha dimming associated with the eruption of a coronal sigmoid in the quiet sun.SOLAR PHYSICS,240(1),77-87.
MLA	Jiang YC,et al."H alpha dimming associated with the eruption of a coronal sigmoid in the quiet sun".SOLAR PHYSICS 240.1(2007):77-87.