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Observational characteristics of radio emission related to multi-polar magnetic configuration
Wang M(汪敏)1; Xie RX(谢瑞祥)1; Xu C(许春)1; Shi SB(施硕彪)1; Yan, YH2; Wang, M (reprint author), Chinese Acad Sci, Natl Astron Observ, Yunnan Observ, Kunming 650011, Peoples R China.
发表期刊CHINESE JOURNAL OF ASTRONOMY AND ASTROPHYSICS
2005
卷号5期号:5页码:508-518
DOI10.1088/1009-9271/5/5/008
产权排序第1完成单位
收录类别SCI
关键词Sun : Radio Radiation Sun : Activity Sun : Flares
摘要We present a large complex radio burst and its associated fast time structures observed on 2001 April 10 in the frequency range of 0.65-7.6 GHz. The NoRH radio image observation shows very complex radio source structures which include preexisting, newly emerging, submerging/cancelling polarities and a bipolar, a tripolar (a 'bipolar + remote unipolar'), and a quadrupolar structure. This suggests that the radio burst is generated from a very complicated loop structure. According to the spectral and image observations, we assume that the beginning of this flare was caused by a single bipolar loop configuration with a 'Y-type' reconnection structure. A composite of radio continuum and fast time structures is contained in this flare. The various fast radio emission phenomena include normal and reverse drifting type III bursts, and slowly drifting and no-drift structures. The tripolar configurations may form a double-loop with a 'three-legged' structure, which is an important source of the various types of fast time structures. The two-loop reconnection model can lead simultaneously to electron acceleration and corona heating. We have also analyzed the behaviors of coronal magnetic polarities and the emission processes of different types radio emission qualitatively. Interactions of a bipolar or multi-polar loop are consistent with our observational results. Our observations favor the magnetic reconnection configurations of the 'inverted Y-type' (bipolar) and the 'three-legged' structures (tripolar or quadrupolar).
语种英语
学科领域Astronomy & Astrophysics
文章类型Article
ISSN1009-9271
URL查看原文
归档日期2005-11-04
WOS记录号WOS:000232872000008
WOS研究方向Astronomy & Astrophysics
WOS类目Astronomy & Astrophysics
关键词[WOS]DOUBLE-LOOP CONFIGURATION ; SOLAR-FLARES ; CHROMOSPHERIC EVAPORATION ; PARTICLE-ACCELERATION ; YOHKOH OBSERVATIONS ; FIELD STRUCTURES ; ENERGY-RELEASE ; CORONAL LOOPS ; RECONNECTION ; FRAGMENTATION
引用统计
被引频次:3[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ynao.ac.cn/handle/114a53/5615
专题射电天文研究组
通讯作者Wang, M (reprint author), Chinese Acad Sci, Natl Astron Observ, Yunnan Observ, Kunming 650011, Peoples R China.
作者单位1.National Astronomical Observatories, Yunnan Observatory, Chinese Academy of Sciences, Kunming 650011
2.National Astronomical Observatories, Chinese Academy of Sciences, Beijing 100012
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Wang M,Xie RX,Xu C,et al. Observational characteristics of radio emission related to multi-polar magnetic configuration[J]. CHINESE JOURNAL OF ASTRONOMY AND ASTROPHYSICS,2005,5(5):508-518.
APA Wang M,Xie RX,Xu C,Shi SB,Yan, YH,&Wang, M .(2005).Observational characteristics of radio emission related to multi-polar magnetic configuration.CHINESE JOURNAL OF ASTRONOMY AND ASTROPHYSICS,5(5),508-518.
MLA Wang M,et al."Observational characteristics of radio emission related to multi-polar magnetic configuration".CHINESE JOURNAL OF ASTRONOMY AND ASTROPHYSICS 5.5(2005):508-518.
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