摘要
本文介绍了1987年9月23日在3.2厘米波长上的日环食射电观测的资料处理、射电源的证认和结果分析,取得以下结果:(1)太阳射电半径为1.09±0.2;(2)日面亮度温度分布,在光学边缘13.4—15.9范围内有一明显的临边增亮,增亮的幅度为13.5±5％;(3)宁静太阳流量为264.8sfu;(4)射电源的角径、流量、平均亮温度和高度等.
This paper presents the observation results of the solar annular eclipse of Sept. 23, 1987 at 3.2 cm wavelength. The data processing and the identification of S-component sources are also described. The following results are obtained:(1) The radius of the radio sun amounts to 1.09 in solar minimum year.(2) The distribution of the brightness temperature on the solar disk shows that there is an apparent brightness in the 13'4-15'9 range on the optical limb and its peak brightness amounts to 13.5 ± 5%.(3) The flux density of the quiet sun amounts to 264.8sfu.(4) Several observed solar radio sources are associated with sunspots and plages. The following parameters of these sources are obtained: angular sizes, flux densities, average brightness temperatures and heights. Average brightness temperatures of the sources are estimated approximately 3-4×105K and 1.5-1.7×105K respectively. Heights of the sources above the photosphere are 1-2.7 × 104km.
出处
《空间科学学报》
CAS
CSCD
北大核心
1991年第1期67-75,共9页
Chinese Journal of Space Science
基金
国家自然科学基金
关键词
日环食
射电源
太阳
Solar annular eclipse, Radio sources, Quiet sun
