Siberian solar radio telescope: parameters and principle of operation, objectives, and results of first observations of spatiotemporal properties of development of active regions and flares

• Published in: Astrophysics and space science Vol. 119; no. 1; pp. 1 - 4
• Main Author: Smolkov, GYa
• Format: Journal Article
• Language: English
• Published: 01.02.1986
• ISSN: 0004-640X
• DOI: 10.1007/BF00648801

At the SibIZMIR, the Siberian solar radio telescope (SSRT) has been devised, built, and operated to diagnose the state of solar activity in the microwave band and to study the structure and development of active regions and flares in the solar atmosphere with high two-dimensional resolution on a real-time basis. The SSRT is a 256-element 5.2-cm cross interferometer oriented in E-W and N-S directions. Each linear interferometer consists of 128 antennas spaced by 4.9 m, with parabolic dishes 2.5 m in diameter. The brightness distribution of circularly polarized and nonpolarized emission is recorded. Radio images are synthesized in the course of solar scanning as a consequence of corotation with the Earth of the multilobe antenna pattern of the SSRT, along with multifrequency recording of the radio brightness distribution in the angle of elevation. All SSRT systems control, data collection, operative representation, and preprocessing are automatized. Solar observations have been conducted simultaneously with adjustment work during a stepwise commissioning of the SSRT since 1981. The observations revealed sudden, considerable changes of active regions and made it possible for the authors to keep track of the process of microwave emission source polarization, localization, and development of flare processes and of other phenomena.