Bibcode
Asensio-Ramos, A.; Ruiz-Cobo, B.
Bibliographical reference
Astronomy and Astrophysics, Volume 549, id.L4, 4 pp.
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1
2013
Journal
Citations
65
Refereed citations
59
Description
Aims: We study the presence of reversed polarity magnetic flux in
sunspot penumbra. Methods: We applied a new regularized method to
deconvolve spectropolarimetric data observed with the spectropolarimeter
SP onboard Hinode. The new regularization is based on a principal
component decomposition of the Stokes profiles. The resulting Stokes
profiles were inverted to infer the magnetic field vector using SIR. Results: We find, for the first time, reversed polarity fields at the
border of many bright penumbral filaments in the whole penumbra.
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