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Observational evidence for solar coronal decimetric radio pulsations with very short periods
Xie RX(谢瑞祥)1; Wang M(汪敏)1; Shi SB(施硕彪)1; Xu C(许春)1; Li WH(李维华)1; Yan, YH2; Xie, RX (reprint author), Chinese Acad Sci, Natl Astron Observ, Yunnan Astron Observ, Kunming 650011, Peoples R China.
发表期刊CHINESE ASTRONOMY AND ASTROPHYSICS
2003-10
卷号27期号:4页码:426-434
DOI10.1016/j.chinastron.2003.10.006
产权排序第1完成单位
收录类别SCI
关键词Sun : Corona Sun : Magnetic Field Sun : Radio Radiation
摘要Using the decimetric (700-1500MHz) radio spectrometer and the synchronous observational system with high temporal resolution at four frequencies (1420, 2130, 2840 and 4260 MHz) of Yunnan Observatory, two rare events were observed on 2001 June 24 and 1990 July 30. The former was a small radio burst exhibiting pulsations with short periods (about 29, 40 and 100 ms) in the impulsive phase. The latter was a large radio burst, which at 2840 MHz produced radio pulsations with period of about 30 ms. This paper focuses on pulsations with very short periods in the range of 29-40 ms. The mechanism of generation of such pulsations may be modulation of radio radiation by the periodic trains of whistler packets originating in unstable regions of the corona. Alternatively, these pulsations can be attributed to wave-wave non-linear interactions of electrostatic upper hybrid waves driven by beams of precipitating electrons in flaring loops.
语种英语
学科领域Astronomy & Astrophysics
文章类型Article
ISSN0275-1062
URL查看原文
WOS记录号WOS:000186654100007
WOS研究方向Astronomy & Astrophysics
WOS类目Astronomy & Astrophysics
关键词[WOS]SLOW MAGNETOACOUSTIC WAVES ; LOOPS ; OSCILLATIONS ; SIGNATURE ; EMISSION ; REGION
引用统计
被引频次:2[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/114a53/5608
专题射电天文研究组
通讯作者Xie, RX (reprint author), Chinese Acad Sci, Natl Astron Observ, Yunnan Astron Observ, Kunming 650011, Peoples R China.
作者单位1.Yunnan Astronomical Observatory, National Astronomical Observatories, Chinese Academy of Sciences, Kunming 650011, China
2.National Astronomical Observatories, Chinese Academy of Sciences, Beijing 100012, China
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Xie RX,Wang M,Shi SB,et al. Observational evidence for solar coronal decimetric radio pulsations with very short periods[J]. CHINESE ASTRONOMY AND ASTROPHYSICS,2003,27(4):426-434.
APA Xie RX.,Wang M.,Shi SB.,Xu C.,Li WH.,...&Xie, RX .(2003).Observational evidence for solar coronal decimetric radio pulsations with very short periods.CHINESE ASTRONOMY AND ASTROPHYSICS,27(4),426-434.
MLA Xie RX,et al."Observational evidence for solar coronal decimetric radio pulsations with very short periods".CHINESE ASTRONOMY AND ASTROPHYSICS 27.4(2003):426-434.
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