Astronomy and Astrophysics – Astrophysics
Scientific paper
Aug 1980
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980a%26a....88..302a&link_type=abstract
Astronomy and Astrophysics, Vol. 88, P. 302, 1980
Astronomy and Astrophysics
Astrophysics
19
Scientific paper
A heuristic theory of polarized radiative transfer is developed for the wings of solar resonance lines. Magnetic fields are neglected. The theory includes quantum mechanical interference between j = ½ and 3/2 excited states of line transitions sharing a common j = ½ ground state. Examples of such lines are Ca II and K, Na I D1 and D2, and Mg II h and k. Calculations are made with the HSRA solar model for these lines as well as the dipole-type transition Ca I 4227 which is not affected by interference. The results for Ca I 4227, Ca II H and K and Na I D1 and D2 compare very well with recent observations, lending support to our theory. The polarization predicted in the Mg H h and k lines is the largest of all indicating these lines to be prime candidates for linear polarization observations in the UV spectrum.
Auer Lawrence H.
Rees David E.
Stenflo Jan Olof
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