Same as Figs. 2 and 3, but for GJ 536. Panel a: GLS periodogram of the combined data for GJ 536. The significant periods are at 8.71 d (induced by GJ 536 b) and at 43.78 d, respectively, the latter likely due to the stellar rotational period (P_rot≈ 43.3 d). The CARMENES, HARPS, HIRES and HARPS-N (magenta triangles) RV data for GJ 536, and the phase folded best Keplerian fit are shown in panel b. Panel c: GLS periodogram of the best fit residuals, revealing only the 43.75 d activity peak.