Extended Data Fig. 2: Polarimetric pulse profiles recorded at a frequency of 8.4 GHz with the Effelsberg radio telescope on four occasions during the summer of 2006.
From: A freely precessing magnetar following an X-ray outburst

In the bottom part of each panel, the black, red and blue lines represent the total intensity I, linear L and circular V polarisation, respectively. In the top part, the black data points indicate the PA of the linear polarisation included in the modelling. The uncertainty in the PA is calculated given L and the off-pulse standard deviation of I53. The dotted lines delimit the 95% confidence levels on Ψ derived from the posterior distributions (seen in Extended Data Fig. 3) assuming the RVM.