GLS periodogram of serval activity indicators. From top to bottom: Hα λ6562.81A, NaI D₁ and D₂ λλ5889.9, 5895.92Ǻ, CaII IRT λλλ 8498.02,8542.09,8662.14 Ǻ, CRX, and dLW periodograms. In all panels, the period of the planet candidate at 5.01 d is marked with a vertical dashed green line, and the star-related signals at 8, 16, and 32 days are marked in orange, red, and magenta, respectively. The 10%, 1%, and 0.1% FAPs are marked as horizontal dashed, dash-dotted, and dotted horizontal lines, respectively. The peaks near one day correspond to aliases of the stellar rotation signal, introduced by the daily sampling of ground-based observations.