Astronomy and Astrophysics – Astrophysics
Scientific paper
Nov 1984
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984a%26a...140..185s&link_type=abstract
Astronomy and Astrophysics (ISSN 0004-6361), vol. 140, no. 1, Nov. 1984, p. 185-198. Sponsorship: Swiss National Science Foundat
Astronomy and Astrophysics
Astrophysics
116
Photosphere, Radiative Transfer, Solar Magnetic Field, Solar Spectra, Statistical Analysis, Zeeman Effect
Scientific paper
The information contents in the solar spectrum for modelling of magnetic fluxtubes is explored by analysing the statistical properties of the Stokes I and V line profiles of 400 unblended Fe I lines. Methods of determining the temperature structure, photospheric magnetic field strength, magnetic filling factor, and microturbulence velocity are presented and used to provide estimates of these quantities in enhanced network and plage regions. Analysis of the magnetic line broadening shows that the magnetic field strength is approximately equal in network and plage regions, consistent with previous results. On the other hand, the temperature structures of the plage fluxtubes and the network elements are observed to be substantially different. The variation of the Stokes V line asymmetries with line strength are found to be similar in the different solar regions, indicating similar velocity structures in plages and network elements.
Solanki Sami K.
Stenflo Jan Olof
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