Forty Years in Solar Radio Observations at Hiraiso

Details Forty Years in Solar Radio Observations at Hiraiso Forty Years in Solar Radio Observations at Hiraiso

Mar 1994

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994crlrv..40...61i&link_type=abstract

Review of the Communications Research Laboratory, vol. 40, p. 61

Mathematics

Logic

Radio Observation, Space Observations (From Earth), Solar Radio Bursts, Astronomical Observatories, Frequency Ranges, Polarimeters, Spectrometers, Sun

Scientific paper

Radio bursts from the sun were discovered in 1942 Ten years later, solar radio observations at Hiraiso started, and they have been continued for more than 40 years-mainly at a meter band. The observation system at Hiraiso has been renewed several times and improved with technological development. The initial receiving frequency was 200 MHz and observations at 9.5 GHz, 500MHz, and 100 MHz started in 1960, 1961, and 1968, respectively. Mapping observations at 32 GHz were carried out from 1980 to 1991. Dynamic spectrum observations in the frequency range from 70 to 500 MHz started in 1988, and the solar radio observation system at Hiraiso was wholly upgraded in 1992. This paper describes the history of the solar radio observation systems at Hiraiso and summarizes the observations made until 1992.

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