Solar millimeter radio emission: 50 years of CrAO RT-22
The article is devoted to the 50th anniversary of CRAO RT-22 – a world-known radio telescope, where outstanding studies of the solar radio emission at centimeter and millimeter wavelengths up to 2 mm were carried out. A brief historical review of the Soviet and Russian findings on the topic of solar millimeter radio astronomy is given. The significance of studies at these wave-lengths, which are sensitive to both the relatively hot and cool temperatures, thus offering a more complete diagnostics of the dynamic chromosphere, is emphasized. The open questions are considered in the light of the future observations with the millimeter interferometer ALMA.
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