(a) Generalized Lomb-Scargle periodograms of LSPM J2116+0234 RV data. The top panel shows the WF of the combined dataset. The next two panels correspond to the VIS and the NIR CARMENES channels, respectively, while the bottom panel shows the periodogram of the combined dataset. The horizontal lines represent bootstrapped FAP levels of 10, 1, and 0.1%. The periods reported in each panel refer to the highest peak. The vertical solid and dashed red lines indicate the period of the proposed planet and the estimated stellar rotation period at 14.44 and ~42 d, respectively. Although we inspected the periodogram for significant signals at frequencies up to 1 d⁻¹, for visual purposes, we only show the region from 0 to 0.1 d⁻¹ in all the periodograms. (b) GLS periodograms of the RV residuals after removing a sinusoid with the period found in (a).