Observational characteristics of radio emission related to multi-polar magnetic configuration

	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, YH 2
刊名	CHINESE JOURNAL OF ASTRONOMY AND ASTROPHYSICS
	2005
卷号	5 期号:5 页码:508-518
关键词	sun : radio radiation sun : activity sun : flares
ISSN号	1009-9271
通讯作者	Wang, M (reprint author), Chinese Acad Sci, Natl Astron Observ, Yunnan Observ, Kunming 650011, Peoples R China.
产权排序	第一完成单位
英文摘要	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).
学科主题	Astronomy & Astrophysics
WOS标题词	Science & Technology ; Physical Sciences
类目[WOS]	Astronomy & Astrophysics
研究领域[WOS]	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
收录类别	SCI
原文出处	http://iopscience.iop.org/1009-9271/5/5/008/
语种	英语
WOS记录号	WOS:000232872000008
内容类型	期刊论文
源URL	[http://ir.ynao.ac.cn/handle/114a53/5615]
专题	云南天文台_射电天文研究组
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
推荐引用方式 GB/T 7714	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.(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.