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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.
Source PublicationASTRONOMY & ASTROPHYSICS
2002-11
Volume395Issue:1Pages:243-247
DOI10.1051/0004-6361:20021245
Contribution Rank第1完成单位
Indexed BySCI ; EI
KeywordSun : Flares Sun : Radio Radiation Sun : Magnetic Fields Sun : Sunspots
AbstractA 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.
Language英语
Subject AreaAstronomy & Astrophysics
SubtypeArticle
ISSN0004-6361
URL查看原文
Archive Date2002-12-25
WOS IDWOS:000179048000029
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS KeywordX-RAY-EMISSION ; FLARES ; FRAGMENTATION ; BRIGHTENINGS ; COALESCENCE ; MODEL ; JUNE
Citation statistics
Cited Times:1[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ynao.ac.cn/handle/114a53/5601
Collection射电天文研究组
Corresponding AuthorXie, RX (reprint author), CAS, Natl Astron Observ, Yunnan Observ, Kunming 650011, Peoples R China.
Affiliation1.Yunnan Observatory, National Astronomical Observatories, CAS, Kunming 650011, PR China
2.National Astronomical Observatories, CAS, Beijing 100012, PR China
First Author AffilicationYunnan Observatories, Chinese Academy of Sciences
Recommended Citation
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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