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Are homologous radio bursts driven by solar post-flare loops?
Wang, Min; Xie, Rui-Xiang; Yan, Yi-Hua; Liu, Yu-Ying
2007
发表期刊CHINESE JOURNAL OF ASTRONOMY AND ASTROPHYSICS
卷号7期号:4页码:477-486
摘要Three particularly complex radio bursts (2001 October 19, 2001 April 10 and 2003 October 26) obtained with the spectrometers (0.65-7.6GHz) at the National Astronomical Observatories, Chinese Academy of Sciences (NAOC, Beijing and Yunnan) and other instruments (NoRH, TRACE and SXT) are presented. They each have two groups of peaks occurring in different frequency ranges (broad-band microwave and narrow-band decimeter wavelengths). We stress that the second group of burst peaks that occurred in the late phase of the flares and associated with post-flare loops may be homologous radio bursts. We think that they are driven by the post-flare loops. In contrast to the time profiles of the radio bursts and the images of coronal magnetic polarities, we are able to find that the three events are caused by the active regions including main single-bipole magnetic structures, which are associated with multipole magnetic structures during the flare evolutions. In particular, we point out that the later decimetric radio bursts are possibly the radio counterparts of the homologous flares (called "homologous radio bursts" by us), which are also driven by the single-bipole magnetic structures. By examining the evolutions of the magnetic polarities of sources (17 GHz), we could presume that the drivers of the homologous radio bursts are new and/or recurring appearances/disappearances of the magnetic polarities of radio sources, and that the triggers are the magnetic reconnections of single-bipole configurations.
关键词Sun : Radio Radiation Sun : Magnetic Fields
收录类别SCI
语种英语
WOS记录号WOS:000249365900002
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文献类型期刊论文
条目标识符http://ir.bao.ac.cn/handle/114a11/7889
专题太阳物理研究部
作者单位1.Chinese Acad Sci, Yunnan Observ, Natl Astron Observ, Kunming 650011, Peoples R China
2.Chinese Acad Sci, Natl Astron Observ, Beijing 100012, Peoples R China
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Wang, Min,Xie, Rui-Xiang,Yan, Yi-Hua,et al. Are homologous radio bursts driven by solar post-flare loops?[J]. CHINESE JOURNAL OF ASTRONOMY AND ASTROPHYSICS,2007,7(4):477-486.
APA Wang, Min,Xie, Rui-Xiang,Yan, Yi-Hua,&Liu, Yu-Ying.(2007).Are homologous radio bursts driven by solar post-flare loops?.CHINESE JOURNAL OF ASTRONOMY AND ASTROPHYSICS,7(4),477-486.
MLA Wang, Min,et al."Are homologous radio bursts driven by solar post-flare loops?".CHINESE JOURNAL OF ASTRONOMY AND ASTROPHYSICS 7.4(2007):477-486.
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