Extended Data Fig. 3: Posterior distributions for the ζ and β parameters from the RVM analysis of the Effelsberg archival data.
From: A freely precessing magnetar following an X-ray outburst

The observations were recorded at 8.4 GHz on MJDs 53926, 53934, 53938 and 53944. The vertical dashed lines delimit the 95% confidence levels on ζ from our preferred free precession modelling of the 2018-2020 PA data with an eastward twisted magnetosphere.