Activity-indicators-based analysis of the simulated periodically active star hosting a planet. Upper and middle panels: GLS periodogram for the BIS and FWHM data, respectively. The dashed vertical lines mark the expected 7-days planetary frequency, as well as the activity frequency and half-frequency in 25 and 12.5 days period. Lower panels: bisector inverse span and full-width half maximum data as a function of RVs obtained for the spectra through cross-correlating against a PHOENIX template.