Polarized thermal emission from Galactic dust as seen by Planck

The Planck maps of polarized thermal emission from Galactic dust reveal a wealth of fascinating data, greatly superseding previous observations in both sensitivity and statistical significance. I will present the results from a number of studies which have used this data to investigate properties of the Galactic magnetic field (GMF), focusing on the statistics of the polarization fraction and angle. I will also present a set of models showing, through a comparison with synthetic observations, that the turbulent structure of the GMF is most likely responsible for the observed statistical properties of this polarized emission.