Radio observation of the solar annular eclipse of September 23, 1987 at 3.2 cm wavelength.

Details Radio observation of the solar annular eclipse of September 23, 1987 at 3.2 cm wavelength. Radio observation of the solar annular eclipse of September 23, 1987 at 3.2 cm wavelength.

Jan 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991chjss..11...67z&link_type=abstract

Chin. J. Space Sci., Vol. 11, No. 1, p. 67 - 75

Computer Science

1

Solar Eclipses: Solar Radio Radiation, Solar Eclipses: 1987 September 23

Scientific paper

This paper presents observational results of the solar annular eclipse of Sep 23, 1987 at 3.2 cm. The data processing and the identification of S-component sources are also described. The following results are obtained: (1) The radius of the radio sun amounts to 1.09 in solar minimum year. (2) The distribution of the brightness temperature on the solar disk shows that there is an apparent brightness in the 13'4 - 15'9 range on the optical limb and its peak brightness amounts to 13.5±5%. (3) The flux density of the quiet sun amounts to 264.8 sfu. (4) Several observed solar radio sources are associated with sunspots and plages. The following parameters of these sources are obtained: angular sizes, flux densities, average brightness temperatures and heights.

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