Modeling of HARPS-N spectroscopy with pyaneti. Upper panel: RV and dLW time series for Model 1, assuming only the presence of a Keplerian signal with the 1.07 days transit period. The green markers in each panel represent the RV and dLW measurements. The solid black curve shows the inferred multi-GP model, with dark and light shaded areas showing the one and two sigma credible intervals of the corresponding GP model. We note that the short period of the planet and the size of the plot make the RV sinusoids appear as a solid blue band. Lower panel: HARPS-N RV data folded on the 1.07-day orbital period of planet b, after subtraction of the systemic velocity and the GP noise model. The inferred RV model is shown as a solid black curve with 1- and 2-sigma credible intervals (shaded areas).