Periodograms of the RVs as observed of the combined HARPS-N and HPF data sets (top panel), the individual CARMENES data set (middle panel), and the combined full RV data set (bottom panel). The orange vertical line highlights a period of 2.02 d, and the horizontal blue dashed lines indicate analytical false-alarm probabilities of 10, 1, and 0.1% (from bottom to top). The y axis is shown up to the largest GLS power or the 0.1% FAP level.