The lambda 10830 He I infrared triplet in the sunspot umbra spectrum

Details The lambda 10830 He I infrared triplet in the sunspot umbra spectrum The lambda 10830 He I infrared triplet in the sunspot umbra spectrum

Dec 1979

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1979pazh....5..620b&link_type=abstract

(Pis'ma v Astronomicheskii Zhurnal, vol. 5, Nov. 1979, p. 620, 621.) Soviet Astronomy Letters, vol. 5, Nov.-Dec. 1979, p. 332, 3

Astronomy and Astrophysics

Astronomy

Helium, Infrared Spectra, Solar Spectra, Sunspots, Umbras, Coronagraphs, Faculae, Line Spectra

Scientific paper

Observations with a noneclipse coronagraph equipped with an image tube
confirm that the spectrum of a sunspot umbra contains an enhanced lambda
10830 He I line. There is a qualitative distinction between the profiles
of the line in umbra and in plage spectra.

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