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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.
Source PublicationSOLAR PHYSICS
2007-01
Volume240Issue:1Pages:77-87
DOI10.1007/s11207-006-0257-4
Contribution Rank第1完成单位
Indexed BySCI
AbstractWe 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.
Language英语
Subject AreaAstronomy & Astrophysics
SubtypeArticle
ISSN0038-0938
URL查看原文
Archive Date2007-05-28
WOS IDWOS:000244954600009
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS KeywordMASS EJECTION ; FILAMENT ERUPTION ; SOLAR-FLARE ; TELESCOPE ; MISSION ; CME
Citation statistics
Cited Times:7[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ynao.ac.cn/handle/114a53/6115
Collection太阳物理研究组
Corresponding AuthorJiang, YC (reprint author), Chinese Acad Sci, Natl Astron Observ, Yunnan Astron Observ, POB 110, Kunming 650011, Peoples R China.
AffiliationNational Astronomical Observatory/Yunnan Astronomical Observatory, Chinese Academy of Sciences, P.O. Box 110, Kunming, 650011, China
Recommended Citation
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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