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Solar Microwave Spike Emission and Change of Magnetic Topology

Published online by Cambridge University Press:  12 April 2016

Fu Qijun ,
Gong Yuanfang ,
Shang Qiongzhen ,
Lu Songquan ,
Hu Hanming ,
Li Chunsheng ,
Li Wei  and
Zhao Bing
Fu Qijun
Affiliation:
Beijing Astronomical Observatory, Chinese Academy of Sciences, Beijing 100080, China. (BAO)
Gong Yuanfang
Affiliation:
Yunnan Astronomical Observatory, Chinese Academy of Sciences, Kunming 650011, China. (YAO)
Shang Qiongzhen
Affiliation:
Yunnan Astronomical Observatory, Chinese Academy of Sciences, Kunming 650011, China. (YAO)
Lu Songquan
Affiliation:
Yunnan Astronomical Observatory, Chinese Academy of Sciences, Kunming 650011, China. (YAO)
Hu Hanming
Affiliation:
Yunnan Astronomical Observatory, Chinese Academy of Sciences, Kunming 650011, China. (YAO)
Li Chunsheng
Affiliation:
Department of Astronomy, Nanjing University, Nanjing 210008, China. (NJU)
Li Wei
Affiliation:
Beijing Astronomical Observatory, Chinese Academy of Sciences, Beijing 100080, China. (BAO)
Zhao Bing
Affiliation:
Beijing Astronomical Observatory, Chinese Academy of Sciences, Beijing 100080, China. (BAO)

Extract

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Electron cyclotron maser (ECM) instability is today’s most favoured process for microwave spike emission. Although ECM looks attractive, the emission mechanism is still unclear due to the imperfection of present theories, inadequacy of observational data, and uncertainty as to conditions in the source region. To find solar active phenomena, both statistically and individually coincident with radio spike events, is essential for understanding the ambient conditions needed for generating spike emission, locating sites where spike emission is produced, and providing clues for particle acceleration and energy release in flares.

In this paper, evidence for an association between spike emission at 21 cm and fast variation of the magnetic configuration in post-flare loops is presented. Such associations may be helpful for solving the questions mentioned above.

Type
Session 6. Flares and Transients
Information
International Astronomical Union Colloquium , Volume 141: The Magnetic and Velocity Fields of Solar Active Regions , 1993 , pp. 377 - 380
Copyright
Copyright © Astronomical Society of the Pacific 1993

References

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