HARPS observations. Left panel: GLS of the RVs and indicators of the HARPS observations similar to Figure 3, but without any correction. The last row shows the window function. The vertical dotted coloured line shows the position of the known transiting planet, while the vertical dotted black lines show the position of the estimated rotation period of the star, its first harmonic, and the double of the rotation period. From bottom to top, the horizontal lines indicate the 10%, 1%, and 0.1% FAP levels calculated following Zechmeister & Kürster (2009). Right panel: Time series of the RV observations and the activity indicators.