A first look into the magnetic field configuration of prominence threads using spectropolarimetric data

Abstract

We show preliminary results of an ongoing investigation aimed at determining the configuration of the magnetic field vector in the threads of a quiescent hedgerow solar prominence using high-spatial resolution spectropolarimetric observations taken in the He I 1083.0 nm multiplet. The data consist of a two-dimensional map of a quiescent hedgerow prominence showing vertical threads. The observations were obtained with the Tenerife Infrared Polarimeter attached to the German Vacuum Tower Telescope at the Observatorio del Teide (Spain). The He I 1083.0 nm Stokes signals are interpreted with an inversion code, which takes into account the key physical processes that generate and/or modify circular and linear polarization signals in the He I 1083.0 nm triplet: the Zeeman effect, anisotropic radiation pumping, and the Hanle effect. We present initial results of the inversions, i.e, the strength and orientation of the magnetic field vector along the prominence and in prominence threads.

To appear in "Proceedings IAU Symposium No. 300, 2013: Nature of Prominences and their Role in Space Weather"

References in corpus (4)

• Advanced Forward Modeling and Inversion of Stokes Profiles Resulting from the Joint Action of the Hanle and Zeeman Effects
• Influence of atomic polarization and horizontal illumination on the Stokes profiles of the He I 10830 multiplet
• Evidence for rotational motions in the feet of a quiescent solar prominence
• Determination of Prominence Plasma Beta from the Dynamics of Rising Plumes