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题名: Harmonics of Solar Radio Spikes at Metric Wavelengths
作者: Feng, S. W.; Chen, Y.; Li, C. Y.; Wang, B.; Wu, Z.; Kong, X. L.; Du, Q. F.; Zhang, J. R.; Zhao, G. Q.
作者部门: 空间环境部
通讯作者: Feng, S. W. ; Chen, Y. ; Li, C. Y. ; Wang, B. ; Wu, Z. ; Kong, X. L. ; Du, Q. F. ; Zhang, J. R. ; Zhao, G. Q.
关键词: Radio burst ; Dynamic spectrum ; Radio spike ; Electron cyclotron maser emission
刊名: SOLAR PHYSICS
ISSN号: 0038-0938
出版日期: 2018
卷号: 293, 期号:3, 页码:39
收录类别: SCI
项目资助者: NNSFC-CAS [U1431103] ; NNSFC [41331068, 11790303 (11790300), 11503014, 41504131, 11703017] ; NSF of Shandong Province [ZR201702100072, ZR2016AP13] ; Specialized Research Fund for the State Key Laboratories
英文摘要: This paper presents the latest observations from the newly built solar radio spectrograph at the Chashan Solar Observatory. On July 18, 2016, the spectrograph records a solar spike burst event, which has several episodes showing harmonic structures, with the second, third, and fourth harmonics. The lower harmonic radio spike emissions are observed later than the higher harmonic bands, and the temporal delay of the second (third) harmonic relative to the fourth harmonic is about 30 - 40 (10) ms. Based on the electron cyclotron maser emission mechanism, we analyze possible causes of the temporal delay and further infer relevant coronal parameters, such as the magnetic field strength and the electron density at the radio source.
语种: 英语
内容类型: 期刊论文
URI标识: http://ir.nssc.ac.cn/handle/122/6255
Appears in Collections:空间环境部_期刊论文

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