Returning magnetic flux in sunspot penumbrae
Solar and Stellar Astrophysics
2015-06-12 v1
Abstract
We study the presence of reversed polarity magnetic flux in sunspot penumbra. 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. We find, for the first time, reversed polarity fields at the border of many bright penumbral filaments in the whole penumbra.
Keywords
Cite
@article{arxiv.1211.6335,
title = {Returning magnetic flux in sunspot penumbrae},
author = {B. Ruiz Cobo and A. Asensio Ramos},
journal= {arXiv preprint arXiv:1211.6335},
year = {2015}
}
Comments
5 pages, 5 figures, accepted for publication in A&A Letters