Statistical analysis of solar FeI lines - Magnetic line broadening

Details Statistical analysis of solar FeI lines - Magnetic line broadening Statistical analysis of solar FeI lines - Magnetic line broadening

Aug 1977

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1977a%26a....59..367s&link_type=abstract

Astronomy and Astrophysics, vol. 59, no. 3, Aug. 1977, p. 367-378.

Astronomy and Astrophysics

Astrophysics

91

Iron, Solar Magnetic Field, Solar Spectra, Spectral Line Width, Spectrum Analysis, Statistical Analysis, Fine Structure, Line Shape, Magnetic Flux, Photosphere, Regression Analysis, Velocity Distribution

Scientific paper

Results are presented for a statistical analysis of 402 unblended Fe I lines covering the region from 400 to 686 nm in the solar spectrum at disk center. The analysis was conducted to search for magnetic line-broadening effects and to obtain information on the magnetic fields at the extreme small-scale end of the spatial spectrum. Empirical relations are determined between line width, line shape, line strength, excitation potential, and wavelength. An upper limit of 9 mT is placed on the rms magnetic field responsible for line-broadening effects, model calculations of magnetic line broadening are performed, and it is suggested that solar magnetic fields are highly intermittent.

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