Results of the periodicity analysis on the Stokes V light curve. Panel a: Lomb-Scargle periodogram of our Stokes V light curve, as shown in blue. The red line marks the rotation period of AU Mic (Plavchan et al. 2020). There are no strong peaks associated with the periods of the planets. The orange line communicates the Lomb-Scargle periodogram of the window function, scaled to be readable. Panel b: Stokes V light curve including all radio data, phase folded to the rotation period of AU Mic of 4.86 days. The data points represent the flux density averaged over the entire bandwidth in 1-h time bins. The colour scale represents the time of observing. The zero point is arbitrary, set to the last observation in our campaign at MJD 60035.1.