GLS periodograms of the RV residuals after subtracting different models for TOI-1201. The vertical solid blueline corresponds to the transiting planet (2.5 d) and the green one to the long-term signal (~ 102 d). The vertical dashed and dotted orange lines correspond to the rotational period picked up in the RVs (~ 19 d) and its alias (~35 d), respectively. Panel a: window function of the data set. Panel b: no signal fitted, just the original RVs. Panel c: residuals after subtracting the long-term signal at ~ 102 d. Panel d: residuals after subtracting a simultaneous model fit of two signals at 102 d and 2.5 d. Panel e: residuals after subtracting a simultaneous model fit of three signals at 102 d, 19, and 2.5 d. The horizontal dashed gray lines represent the FAP levels of 10, 1, and 0.1% (from bottom to top).