| 1988年12月16日同CME相协的微波Ⅳ型大爆发 |
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| 引用本文： | 纪树臣,魏奉思.1988年12月16日同CME相协的微波Ⅳ型大爆发[J].空间科学学报,1999,19(4):301-307. |
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| 作者姓名： | 纪树臣 魏奉思 |
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| 作者单位： | 1.中国科学院云南天文台, 昆明 650011 |
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| 基金项目： | 国家自然科学基金，云南省基础研究基金，天文委员会基金 |
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| 摘 要： | 1988年12月16日云南天文台PhoenixⅠ日冕射电频谱仪观测到一次同日冕物质抛射相伴随的微波Ⅳ型大爆发。从0826—0941UT;三个波段的主峰间出现了121min的长周期振荡。在第一主峰的6个次峰间出现了1.2min的短周期振荡。根据北京怀柔磁场图,计算了爆发源区的亮温度,电子幂律分布等物理参量。采用慢波模式计算的短周期振荡与观测结果相符。初步解释了这次微波Ⅳ型大爆发,CME及其它伴生现象。
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| 关 键 词： | 日冕物质抛射 微波Ⅳ型爆发 |
| 收稿时间： | 1998-07-27 |
A LARGE MICROWAVE TYPE IV RADIO BURST ASSOCIATED CME ON DECEMBER 16, 1988 |
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| JI Shuchen.A LARGE MICROWAVE TYPE IV RADIO BURST ASSOCIATED CME ON DECEMBER 16, 1988[J].Chinese Journal of Space Science,1999,19(4):301-307. |
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| Authors: | JI Shuchen |
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| Institution: | 1.Yunnan Observatory, The Chinese Academy of Sciences, Kunming, 6500112.Center for Space Science and Applied Research, The Chinese Academy of Sciences |
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| Abstract: | A large microwave Type Ⅳ radio burst associated with CMEwas observed withPhoenix I Corona Radio Spectrometer of Yunnan Observatory on December 16,1988 as an accompanying event. atom 0826 to 0941 UT, a long period oscillation of 12.1 minutes occurred among five main peaks on three wave bands. Ashort periodoscillation of 1.2 minutes appeared among six subpeaks on first main peak. Onthe basis of Beijing Huairou magnetogram, the concerned physical parameters ofburst source region are calculated, e.g. brightness temperature, electron power-lawdistribution, etc. The short period oscillation calculated with the slow wave modelconforms to the observational period. This large Type IVμ burst, CME and otheraccompanying phenomena are all interpreted preliminarily. |
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