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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); Jiang, YC (reprint author), Chinese Acad Sci, Natl Astron Observ, Yunnan Astron Observ, POB 110, Kunming 650011, Peoples R China.
发表期刊SOLAR PHYSICS
2007-01
卷号240期号:1页码:77-87
DOI10.1007/s11207-006-0257-4
产权排序第1完成单位
收录类别SCI
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.
语种英语
学科领域Astronomy & Astrophysics
文章类型Article
ISSN0038-0938
URL查看原文
归档日期2007-05-28
WOS记录号WOS:000244954600009
WOS研究方向Astronomy & Astrophysics
WOS类目Astronomy & Astrophysics
关键词[WOS]MASS EJECTION ; FILAMENT ERUPTION ; SOLAR-FLARE ; TELESCOPE ; MISSION ; CME
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被引频次:6[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ynao.ac.cn/handle/114a53/6115
专题太阳物理研究组
通讯作者Jiang, YC (reprint author), Chinese Acad Sci, Natl Astron Observ, Yunnan Astron Observ, POB 110, Kunming 650011, Peoples R China.
作者单位National Astronomical Observatory/Yunnan Astronomical Observatory, Chinese Academy of Sciences, P.O. Box 110, Kunming, 650011, China
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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,&Jiang, YC .(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.
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