The inference of vector magnetic fields from polarization measurements with limited spectral resolution

Physics – Optics

Scientific paper

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Electromagnetic Wave Filters, Line Spectra, Magneto-Optics, Polarized Radiation, Solar Magnetic Field, Stokes Law Of Radiation, Thermodynamic Properties, Vectors (Mathematics)

Scientific paper

A method is presented for recovery of the vector magnetic field and thermodynamic parameters from polarization measurement of photospheric line profiles measured with filtergraphs. The method includes magneto-optic effects and may be utilized on data sampled at arbitrary wavelengths within the line profile. The accuracy of this method is explored through inversion of synthetic Stokes profiles subjected to varying levels of random noise, instrumental wave-length resolution, and line profile sampling. The level of error introduced by the systematic effect of profile sampling over a finite fraction of the 5 minute oscillation cycle is also investigated. The results presented here are intended to guide instrumental design and observational procedure.

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