| Characteristics of radio spikes as solar microflares at short decimetric wavelength | |
Xie RX(谢瑞祥)1 ; Wang M(汪敏)1; Fu, QJ2; Li, W2; Xie, RX (reprint author), CAS, Natl Astron Observ, Yunnan Observ, Kunming 650011, Peoples R China.
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| 发表期刊 | ASTRONOMY & ASTROPHYSICS
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| 2002-11 | |
| 卷号 | 395期号:1页码:243-247 |
| DOI | 10.1051/0004-6361:20021245 |
| 产权排序 | 第1完成单位 |
| 收录类别 | SCI ; EI |
| 关键词 | Sun : Flares Sun : Radio Radiation Sun : Magnetic Fields Sun : Sunspots |
| 摘要 | A rare type of radio spike occurred on January 5, 1994 at short decimetric wavelength (1.42 GHz), and was observed with the Yunnan Observatory high time resolution (1 ms) radio telescope. The radio and optical characteristics of the spikes as radio microflares are presented. This event contains 53 radio millisecond spikes, and shows an intermittently periodic pulse train superimposed on the radio continuum background. Two newly emerging small sunspot groups with complex polarities were observed. The magnetic field strength of the source and the irradiated spike energies are estimated by using the radio observations. During a single spike, less than or equal to10(23) ergs may have been transferred to nonthermal electrons, and thus radio spikes may reflect microflare class activity. We discuss the generation mechanism of the radio microflares qualitatively. Our results favour the explosive coalescence model of the multiple magnetic flux loops, leading simultaneously to acceleration of electrons and heating. |
| 语种 | 英语 |
| 学科领域 | Astronomy & Astrophysics |
| 文章类型 | Article |
| ISSN | 0004-6361 |
| URL | 查看原文 |
| 归档日期 | 2002-12-25 |
| WOS记录号 | WOS:000179048000029 |
| WOS研究方向 | Astronomy & Astrophysics |
| WOS类目 | Astronomy & Astrophysics |
| 关键词[WOS] | X-RAY-EMISSION ; FLARES ; FRAGMENTATION ; BRIGHTENINGS ; COALESCENCE ; MODEL ; JUNE |
| 引用统计 | |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://ir.ynao.ac.cn/handle/114a53/5601 |
| 专题 | 射电天文研究组 |
| 通讯作者 | Xie, RX (reprint author), CAS, Natl Astron Observ, Yunnan Observ, Kunming 650011, Peoples R China. |
| 作者单位 | 1.Yunnan Observatory, National Astronomical Observatories, CAS, Kunming 650011, PR China 2.National Astronomical Observatories, CAS, Beijing 100012, PR China |
| 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 | Xie RX,Wang M,Fu, QJ,et al. Characteristics of radio spikes as solar microflares at short decimetric wavelength[J]. ASTRONOMY & ASTROPHYSICS,2002,395(1):243-247. |
| APA | Xie RX,Wang M,Fu, QJ,Li, W,&Xie, RX .(2002).Characteristics of radio spikes as solar microflares at short decimetric wavelength.ASTRONOMY & ASTROPHYSICS,395(1),243-247. |
| MLA | Xie RX,et al."Characteristics of radio spikes as solar microflares at short decimetric wavelength".ASTRONOMY & ASTROPHYSICS 395.1(2002):243-247. |
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| Characteristics of r（193KB） | 期刊论文 | 作者接受稿 | 开放获取 | CC BY-NC-SA | 浏览 请求全文 | |
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