| 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.
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| 发表期刊 | CHINESE JOURNAL OF ASTRONOMY AND ASTROPHYSICS
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| 2005 | |
| 卷号 | 5期号:5页码:508-518 |
| DOI | 10.1088/1009-9271/5/5/008 |
| 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 |
| ISSN | 1009-9271 |
| 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 | |
| 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 |
| 第一作者单位 | 中国科学院云南天文台 |
| 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,&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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