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A Trans-equatorial Filament and the Bastille Day Flare/CME Event

Published online by Cambridge University Press:  03 June 2005

Jingxiu Wang ,
Guiping Zhou ,
Yayuan Wen ,
Yuzong Zhang ,
Jun Zhang ,
Huaning Wang  and
Yuanyong Deng
Jingxiu Wang
Affiliation:
National Astronomical Observatories, Chinese Academy of Sciences, Beijing 100012, China (email: wjx@ourstar.bao.ac.cn)
Guiping Zhou
Affiliation:
National Astronomical Observatories, Chinese Academy of Sciences, Beijing 100012, China (email: wjx@ourstar.bao.ac.cn)
Yayuan Wen
Affiliation:
National Astronomical Observatories, Chinese Academy of Sciences, Beijing 100012, China (email: wjx@ourstar.bao.ac.cn)
Yuzong Zhang
Affiliation:
National Astronomical Observatories, Chinese Academy of Sciences, Beijing 100012, China (email: wjx@ourstar.bao.ac.cn)
Jun Zhang
Affiliation:
National Astronomical Observatories, Chinese Academy of Sciences, Beijing 100012, China (email: wjx@ourstar.bao.ac.cn)
Huaning Wang
Affiliation:
National Astronomical Observatories, Chinese Academy of Sciences, Beijing 100012, China (email: wjx@ourstar.bao.ac.cn)
Yuanyong Deng
Affiliation:
National Astronomical Observatories, Chinese Academy of Sciences, Beijing 100012, China (email: wjx@ourstar.bao.ac.cn)
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Abstract

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The Bastille Day Event on July 14 2000, a major solar flare and a global coronal mass ejection (CME), is not a phenomenon of a single active region. Activation and eruption of a huge trans-equatorial filament is seen to precede the simultaneous filament eruption and flare in the source active region, AR9077, and the full halo-CME in the high corona. Evidence of reconfiguration of large-scale structures, manifested by SOHO EIT and Yohkoh SXT observations, is clearly seen. The large-scale magnetic composition related to the trans-equatorial filament and its sheared magnetic arcades appears to be the essential part of the CME parent magnetic structure. Estimations show that the filament-arcade system has enough magnetic helicityto account for the helicity carried by the related CMEs.To search for other articles by the author(s) go to: http://adsabs.harvard.edu/abstract_service.html

Keywords

Sun: coronal mass ejections (CMEs)Sun: filamentsSun: activity
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 2004 , Issue IAUS226 , September 2004 , pp. 135 - 136
Copyright
© 2005 International Astronomical Union