Monochromatic images in stokes parameters and the structure of magnetic fields in sunspots

Details Monochromatic images in stokes parameters and the structure of magnetic fields in sunspots Monochromatic images in stokes parameters and the structure of magnetic fields in sunspots

Apr 1986

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986soph..104..273s&link_type=abstract

Solar Physics, Volume 104, Issue 2, pp.273-285

Physics

4

Scientific paper

Taking into account magneto-optical effects, we have obtained numerical solutions of the transfer equations for the Stokes parameters, calculated the linearly polarized intensity (˜U) and constructed its monochromatic images of unipolar sunspots. By comparison with the observational material of the vector magnetograph of the Marshall Space Flight Center, Huntsville (Alabama), we have found that the model of radial magnetic fields may give rise to ˜U monochromatic images close to those observed. The same conclusion has been obtained previously by Landi Degl'Innocenti (1979), although his analysis was performed with the Milne-Eddington approximation instead of a detailed sunspot model. Moreover, we have shown that the model of spiral magnetic fields leads to results in contrast with observations.

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