GLS periodograms of the spectral activity indicators from CARMENES VIS (green) and NIR data (red), and the S index from HIRES data (blue). In all panels, the solid vertical purple line indicates the orbital period (10.64 d) of the planet, and the vertical yellow shaded bands indicate the rotation period derived from the combined photometry data sets and half the rotation period. The dashed horizontal black lines correspond to FAP levels of 10, 1, and 0.1% (from bottom to top).