GLS periodograms of photometry and activity indicators. The first three panels show the photometry from HATNet, ASAS-SN, and TJO, and the following panels show the activity indicators derived from CARMENES, which show signals with less than 1% FAP. The stellar rotation of P ≈ 122 d, as determined from the photometry, is indicated by the purple dot-dashed line and its second harmonic (P∕2) by the purple dotted line. As in Fig. 4, the period of the transiting planet is denoted by the red solid line, and the ~15 d periodicity is marked in blue, respectively. We normalised the power using the parameterisation of Zechmeister & Kürster (2009) and the 10, 1, and 0.1% false alarm probabilities denoted by the horizontal grey dashed lines are calculated using the analytic expression.