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Coordinate flares observed by TRACE

Published online by Cambridge University Press:  18 July 2013

Defang Kong ,
Xiaoli Yan  and
Zhike Xue
Defang Kong
Affiliation:
National Astronomical Observatories of China/Yunnan Astronomical Observatory, Chinese Academy of Sciences, Kunming, Yunnan 650011, China email: kdf@ynao.ac.cn
Xiaoli Yan
Affiliation:
National Astronomical Observatories of China/Yunnan Astronomical Observatory, Chinese Academy of Sciences, Kunming, Yunnan 650011, China email: kdf@ynao.ac.cn
Zhike Xue
Affiliation:
National Astronomical Observatories of China/Yunnan Astronomical Observatory, Chinese Academy of Sciences, Kunming, Yunnan 650011, China email: kdf@ynao.ac.cn
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Abstract

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Two flares occurred simultaneously in active region NOAA 9433 on 2001 April 25. The GOES X-ray fluxes show only one peak during the two flares. The negative magnetic polarities in the two flaring regions exhibited a clockwise rotation motion around the positive polarities, which can be seen from the evolution of the SOHO/MDI magnetograms. Through analyzing the potential fields extrapolated from the MDI magnetogram, we find that there is a channel strode by a group of magnetic field lines connecting the two flaring regions.

Keywords

Sun: activitySun: sunspotsSun: flares
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 8 , Symposium S294: Solar and Astrophysical Dynamos and Magnetic Activity , August 2012 , pp. 547 - 548
Copyright
Copyright © International Astronomical Union 2013 

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