Astronomy and Astrophysics – Astrophysics
Scientific paper
May 1988
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988ap%26ss.144..353o&link_type=abstract
Astrophysics and Space Science (ISSN 0004-640X), vol. 144, no. 1-2, May 1988, p. 353-356.
Astronomy and Astrophysics
Astrophysics
1
Faculae, Line Spectra, Quadrupoles, Solar Flares, Solar Spectra, Emission Spectra, Grazing Incidence, Magnesium, Reflectance, Sodium
Scientific paper
Flarelike plages showing the resonance lines of Na I and Mg II as strong emission lines are discussed. The spectra of these objects may be instrumental in the study of 3 2S-n 2D electric quadrupole lines. It is shown schematically how selective grazing incidence reflections in a gaseous shell may produce a flarelike object in the center, where the shell is assumed to be more or less transparent.
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