太阳射电频谱仪超高时间分辨率观测的新结果  

New Results Obtained From the Solar Radio Spectrometer in Decimeter Wavelength with Super-High Temporal Resolution

作　　者：刘玉英[1] 傅其骏[1] 颜毅华[1] 谭程明[1] 

机构地区：[1]中国科学院国家天文台,北京100012

出　　处：《天文研究与技术》2006年第2期119-127,共9页Astronomical Research & Technology

基　　金：973(G2000078403);国家自然科学基金(1022531310333030)资助

摘　　要：国家天文台分米波太阳射电频谱仪用新的观测模式获得太阳射电频谱的一些新的观测现象。新的观测模式频率在1．1—1．34GHz范围，时间分辨率是1．25ms；正常的观测模式下频率在1．1—2．06GHz范围，时间分辨率是5ms。在两种模式下频率分辨率为4MHz。发现窄带Ⅲ型爆发（“blips”）斑马纹（Zebra）和纤维结构（Fiber）中的超精细结构和一些新的精细结构。这些新的结果有助于深入理解在太阳耀斑期间低日冕中能量的释放和转移，也为拟建中的太阳射电频谱日像仪提出了新的要求。Some new results have been observed with the solar decimeter spectrometer with a new observing mode at National Astronomical Observatories （NAOC）, Chinese Academy of Sciences （CAS）. The temporal resolution and frequency range used in the new observing mode are 1.25 msec and 1.10-1.34 GHz, respectively, while they are 5 msec and 1.10- 2.06GHz, respectively, used in the standard observing mode. The spectral resolution is 4 MHz in both observing modes. Some unexpected super-fine structures in narrowband type Ⅲ bursts （namely ＂blips＂）, zebra patterns, fiber bursts, and some new fine structures have been found. The new results will lead to deeply understand the energy release and transfer in the low corona during solar flares.

关 键 词：太阳射电频谱仪 时间分辨率 观测结果 

分 类 号：P161.4[天文地球—天文学]