A LARGE MICROWAVE TYPE IV RADIO BURST ASSOCIATED CME ON DECEMBER 16, 1988
-
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。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.
-
Key words:
- Coronal mass ejection /
- Microwave type Ⅳ burst
点击查看大图
计量
- 文章访问数: 2232
- HTML全文浏览量: 46
- PDF下载量: 968
- 被引次数: 0