Extended Data Fig. 4: Temporal evolution of the ellipticity and wobble angle as predicted by the two best models of free precession.
From: A freely precessing magnetar following an X-ray outburst
The top and bottom panels show the prediction for the ellipticity ε and wobble angle θ, respectively. Predictions (mean values) from the preferred model of relaxing ellipticity with frictional coupling are shown with dashed lines while predictions from the model of wobble angle decay with relaxing ellipticity to a non-zero value are shown with dotted lines. The light blue rectangle delimit the period of time when the second X-ray outburst occurred. The red vertical dashed line indicates the time of our first radio observation.
