Astronomy and Astrophysics – Astronomy
Scientific paper
Dec 1983
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983basi...11..337s&link_type=abstract
Astronomical Society of India, Bulletin, vol. 11, Dec. 1983, p. 337-340.
Astronomy and Astrophysics
Astronomy
2
Emission Spectra, Line Spectra, Solar Corona, Solar Eclipses, Chromosphere, Photographic Plates, Solar Prominences, Solar Spectra, Spectrographs
Scientific paper
Spectrograms of the inner solar corona were obtained during the 1980 total solar eclipse. Two Ebert-Fastie type spectrographs with circular slits were used to obtain spectra on the east and the west at 1.06 solar radii. These spectrographs were operated at a dispersion of 28.3 A/mm and covered the whole of the visible spectrum. The relative intensities of the emission lines of the inner corona, chromosphere and prominences are reported here. There is an indication of the existence of a highly active isolated pocket in the solar corona with a temperature greater than 4 x 10 to the 6th K. It is found that the ratio of the intensities of Ca(+)K to Ca(+)H is about 1.5 in the prominences whereas it is only 1.0 in the chromosphere.
Raheem C. A. K.
Rajamohan R.
Singh Jaivir
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