Semiempirical models of sunspots

Details Semiempirical models of sunspots Semiempirical models of sunspots

Oct 1985

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985azh....62..995s&link_type=abstract

(Astronomicheskii Zhurnal, vol. 62, Sept.-Oct. 1985, p. 995-1002) Soviet Astronomy (ISSN 0038-5301), vol. 29, Sept.-Oct. 1985, p

Astronomy and Astrophysics

Astronomy

3

Astronomical Models, Semiempirical Equations, Sunspots, Umbras, Iron, Line Spectra, Photosphere, Solar Spectra, Thermodynamic Equilibrium

Scientific paper

On the basis of spectroscopic observations in the Mg I b1, Fe I 5434 A, and Na I D2 lines, 12 semiempirical models of sunspots of different sizes (r umbral radius, 2-8 arcsec) are constructed for several stages of their development. It is shown that the model of an umbra varies greatly with an increase in umbral radius up to a limiting value of 3.5-4 arcsec (Su = 7.5 MSH), after which the changes are small, and for a fixed umbral radius there is no significant difference between the models of sunspots in different phases of their development.

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