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Paper: A Fast Stokes Profile Synthesis
Volume: 405, Solar Polarization 5: In Honor of Jan Olof Stenflo
Page: 535
Authors: Kopf, M.; Carroll, T.A.; Strassmeier, K.G.
Abstract: The disk integration process in Doppler imaging and Zeeman-Doppler imaging requires excessive calculations of local Stokes profiles and thus has high computational demands. We present a novel approximation method for the polarized radiative transfer calculation, base on a Principal Component Analysis and Artificial Neural Networks. A set of local line profiles is decomposed into their respective eigenspectra and Artificial Neural Networks are trained, to approximate the non-linear mapping between atmospheric parameters and principal components. In test calculations we demonstrate the reliability and precision of this fast radiative transfer approximation method.
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