Astronomy and Astrophysics – Astrophysics
Scientific paper
Nov 1990
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990a%26a...239..356z&link_type=abstract
Astronomy and Astrophysics (ISSN 0004-6361), vol. 239, no. 1-2, Nov. 1990, p. 356-366.
Astronomy and Astrophysics
Astrophysics
45
Faculae, Solar Activity, Solar Flux, Solar Magnetic Field, Line Spectra, Magnetic Field Configurations, Magnetic Flux, Sunspots
Scientific paper
The dependence of the properties of solar magnetic elements on the magnetic filling factor is studied using Stokes V spectra of three lines observed near the center of the solar disk. The inversion technique developed by Keller et al. (1990) is applied to three neighboring spectral lines, and the average temperature difference, the magnetic field strength, and the nonstationary velocity in the relevant line-forming layers are quantitatively determined. Quantitative evidence is provided for the dependence of the temperature within flux tubes on the amount of magnetic flux. The flux tubes are found to become cooler and their field strengths, at a given optical depth, to become larger as the filling factor increases. The presence of kilogauss field strengths within flux tubes is reconfirmed.
Keller Christoph U.
Solanki Sami K.
Stenflo Jan Olof
Zayer Igor
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