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Chinese Journal of Space Science ›› 2015, Vol. 35 ›› Issue (2): 133-142.doi: 10.11728/cjss2015.02.133

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Microwave Type U and RS Bursts in the X2.2 Solar Flare on 15 February 2011

XUE Yu1, WANG Shujuan1, YAN Yihua1, HUANG Chong1, YU Sijie1,2, WANG Rui3   

  1. 1 Key Laboratory of Solar Activity, National Astronomical Observatories, Chinese Academy of Sciences, Beijing 100012;
    2 Max-Planck Institute for Solar System, Justus-von-Liebig-Weg 3, 37077 Göttingen, Germany;
    3 State Key Laboratory of Space Weather, Center for Space Science and Applied Research, Chinese Academy of Sciences, Beijing 100190
  • Received:2014-04-10 Revised:2015-01-08 Online:2015-02-15 Published:2015-03-04
  • Supported by:

    Supported by National Basic Research Program of Ministry of Science and Technology of China (2011CB811401),the National Major Scientific Equipment Research and Development Project (ZDYZ2009-3) and National Natural Science Foundation of China (11211120147, 11221063, 11273030, 11103044, 11103039, 11373039)

Abstract:

Two groups of microwave type U and Reverse-Slope (RS) bursts after the Soft X-Ray (SXR) maximum were observed with the 2.6~3.8GHz spectrometer of Chinese Solar Broadband Radio Spectrometers (SBRS/Huairou) on 15 February 2011, when an X2.2 solar flare occurred in the Active Region (AR) NOAA11158. A Shear-driven Quadrupolar Reconnection (SQR) model was utilized to analyze these bursts and the two loops involved were found to be basically in the same spatial scale and have a height difference of about 1300km. These bursts were interpreted to be a result of a new reconnection process between the two similar-scaled loops.

Key words: Solar flare, Solar radio microwave burst

CLC Number: