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Paper: Inference of the Magnetic Field in Spicules from Spectro-Polarimetry of He I D3
Volume: 358, Solar Polarization 4
Page: 443
Authors: Lopez Ariste, A.; Casini, R.
Abstract: Spectro-polarimetric observations of the He I D3 line in spicules over the solar limb have been analyzed, and the magnetic field direction determined. Up to a 90° ambiguity the field appears to be aligned with the visible spicular structures. The anomalous broadening of the observed line prevents the retrieval of other information at this stage. The only further constraint we were able to place was on the field strength: fields stronger than 40G must be statistically present in our observations, but not much stronger than that.
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