A Quantitative Method to Optimise Magnetic Field Line Fitting of Observed Coronal Loops |
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| Authors: | Carcedo L Brown DS Hood AW Neukirch T Wiegelmann T |
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| Institution: | 1. School of Mathematics and Statistics, University of St. Andrews, St. Andrews, KY16 9SS, U.K
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| Abstract: | Many authors use magnetic-field models to extrapolate the field in the solar corona from magnetic data in the photosphere. The accuracy of such extrapolations is usually judged qualitatively by eye, where a less judgemental quantitative approach would be more desirable. In this paper, a robust method for obtaining the best fit between a theoretical magnetic field and intensity observations of coronal loops on the solar disk will be presented. The method will be applied to Yohkoh data using a linear force-free field as an illustration. Any other theoretical model for the magnetic field can be used, provided there is enough freedom in the model to optimize the fit. |
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