Radio Imaging-Spectroscopy Observations of the Sun in Decimetric Wavelengths

Yan Yihua, yyh@nao.cas.cn, Key Lab of Solar Activity, NAOC, China
Wang Wei, Key Lab of Solar Activity, NAOC
Liu Fei, Key Lab of Solar Activity, NAOC
Geng Lihong, Key Lab of Solar Activity, NAOC
Chen Zhijun, Key Lab of Solar Activity, NAOC
Zhang Jian, Department of Astronomy, Peking University

Abstract
To address fundamental processes in the solar eruptive phenomena it is important to have imaging-spectroscopy over cm-dm wave range. The Chinese Spectral Radioheliograph (CSRH) in 0.4-15 GHz range with high time, space and frequency resolutions is being constructed to achieve this goal. The perspectives to open new observational windows on solar flares and CMEs will be achieved by mapping the radio emission from unstable electron populations during the basic processes of energy release. CSRH is located in a radio quiet region in Inner Mongolia of China. The array of CSRH-I in 0.4-2.0 GHz with 40 4.5m antennas has been established and starts test observations. The first observations from CSRH-I of the Sun and solar burst events are introduced.