Astronomy and Astrophysics – Astronomy
Scientific paper
Dec 2004
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004aas...205.1003m&link_type=abstract
American Astronomical Society Meeting 205, #10.03; Bulletin of the American Astronomical Society, Vol. 36, p.1349
Astronomy and Astrophysics
Astronomy
Scientific paper
Numerical methods inversion methods are routinely used to obtain the structure of the magnetic field on the solar surface from observed spectra. These codes necessarily include appoximations of the magnetic field structure and the spectral line formation process, and make a trade-off between complexity and numerical expediency. To evaluate the accuracy with which magnetic field structure can be recovered under various assumptions we performed an accurate forward calculation of Stokes profiles from a two-dimensional cross section of a magneto-hydrodynamic simulation of solar convection. The calculated profiles were then analyzed with several different inversion codes and the recovered field strengths and orientations were then compared with the original values. We conclude that the results of Stokes profile inversions have to be treated the necessary skepticism, especially when complex field geometries are present.
McMillan M. T.
Sankarasubramaniam K.
Uitenbroek Han
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