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The observational signature of quasi period reconnection

Published online by Cambridge University Press:  01 November 2006

G. P. Wu  and
G. L. Huang
G. P. Wu
Affiliation:
Purple Mountain Observatory, Chinese Academy of Sciences, Nanjing 210008, China email: wuguiping@seu.edu.cn Department of Physics, Southeast University, Nanjing 210096, China Present address: 2nd, Si Pai-Lou, Department of Physics, Nanjing, 2100096, China.
G. L. Huang
Affiliation:
Purple Mountain Observatory, Chinese Academy of Sciences, Nanjing 210008, China email: wuguiping@seu.edu.cn
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Abstract

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Based upon the similar time profiles of the hard x-ray and microwave emissions on 21 April 2002 flare-CME event, we argue that: (1) in the impulsive phase of the flare, the fast loop-loop reconnection triggered the quasi periodic magnetic energy release and particle acceleration with duration of the order of minute, (2) in the extended phase of the flare (01:40-01:50UT), the quasi period reconnection in current sheet produced the impulsive energetic electrons injection and modulated the microwave emissions with duration of 10-30 s, (3) the current driven instability enhances the magnetic energy releasing rate and scatters the energetic electrons, which may be used to explain the power index of the hard X-ray and microwave emissions.

Keywords

quasi periodic oscillationfast loop-loop reconnectioncurrent driven instability
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 2 , Symposium S233: Solar Activity and its Magnetic Origin , March 2006 , pp. 120 - 121
Copyright
© 2006 International Astronomical Union