Astronomy and Astrophysics – Astronomy
Scientific paper
Dec 1978
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1978azh....55.1256s&link_type=abstract
Astronomicheskii Zhurnal, vol. 55, Nov.-Dec. 1978, p. 1256-1262. In Russian.
Astronomy and Astrophysics
Astronomy
Brightness Temperature, Photosphere, Solar Atmosphere, Solar Radiation, Absorption Spectra, Absorptivity, Black Body Radiation, Hydrogen Ions, Radiation Measurement, Root-Mean-Square Errors, Solar Spectra, Temperature Effects
Scientific paper
A technique for analyzing blackbody and ribbon-filament-lamp radiation is used to analyze results of absolute solar-radiation measurements. From the observational data alone it is found that: (1) neither the solar disk as a whole nor any point on the disk radiates as a blackbody; (2) continuous absorption due to negative hydrogen ions dominates in the spectral region from 4800 to 26,000 A; and (3) some unknown agent is responsible for continuous absorption shortward of 4800 A. Possible uncertainties in the initial results are considered and shown to be incapable of distorting the observed real wavelength dependence of the continuous absorption factor. It is concluded that diatomic molecules may be the source of the additional opacity in the solar photosphere shortward of 4800 A.
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