Tag Archives: coronal modeling

33. Comparing nonlinear force-free and potential field modeling using full-disk HMI data

Contributed by Tilaye Tadesse. Posted on January 23, 2015

We present potential filed and nonlinear force-free magnetic field (NLFFF) extrapolations of full-disk magnetogram observed by SDO/HMI instrument. The study shows that NLFFF model agrees significantly better with coronal magnetic loops as observed in SDO/AIA images.

16. Spatial-Variance Magnetic Synoptic Maps

Contributed by Luca Bertello. Posted on May 26, 2014

Bertello and collaborators at NSO have made a first attempt to estimate some of the uncertainties in magnetic synoptic maps and evaluated their impact on coronal and heliospheric models. They found that accounting for the statistical uncertainties arising from the distribution of image pixels contributing to each bin in the synoptic map may produce a noticeable change in the results obtained from these models.