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Observational evidence for solar coronal decimetric radio pulsations with very short periods
Xie, RX; Wang, M; Shi, SB; Xu, C; Li, WH; Yan, YH
2003-10-01
Source PublicationCHINESE ASTRONOMY AND ASTROPHYSICS
Volume27Issue:4Pages:426-434
AbstractUsing 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.
KeywordSun : Corona Sun : Magnetic Field Sun : Radio Radiation
DOI10.1016/j.chinastron.2003.10.006
Indexed BySCI
Language英语
WOS IDWOS:000186654100007
Citation statistics
Cited Times:2[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.bao.ac.cn/handle/114a11/8415
Collection太阳物理研究部
Affiliation1.Chinese Acad Sci, Natl Astron Observ, Yunnan Astron Observ, Kunming 650011, Peoples R China
2.Chinese Acad Sci, Natl Astron Observ, Beijing 100012, Peoples R China
Recommended Citation
GB/T 7714
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,&Yan, YH.(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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