Physics
Scientific paper
May 1985
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985svmf.nasa..306s&link_type=abstract
In NASA. Marshall Space Flight Center Meas. of Solar Vector Magnetic Fields p 306-321 (SEE N85-29869 18-92)
Physics
10
Least Squares Method, Solar Magnetic Field, Sunspots, Velocity Distribution, Velocity Measurement, Equations Of State, Line Spectra, Polarized Radiation
Scientific paper
The Auer, Heasley and House Stokes inversion procedure in use at High Altitude Observatory is based on the analytic solution of the equation of transfer for polarized light where the representation of the thermodynamic and magnetic structure of the atmosphere is assumed to have a high degree of invariance, namely, a Milne-Eddington (ME) structure with a constant magnetic field. In the presence of invariance breaking gradients the resultant Stokes profiles are represented only approximately, if at all, by analytic forms. The accuracy of the inversion parameters and their significance as measures of actual structure are explored for the ME and the Landman-Finn sunspot models under the effects of velocity gradients. The resulting field parameters are good to a few percent and prove to be insensitive to the errors committed by the use of a ME-representation, but the resulting ME parameters yield a less precise measure of thermal structure.
Lites Bruce W.
Rees David E.
Skumanich Andrew
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