Detection limits in the SPIRou RV time series. Left panels: upper limits in m s⁻¹ of the semiamplitude K of the sinusoidal signal. Right panels: upper limits in terms of the projected mass m sin(i). Objects with a projected mass above the limit are ruled out by the observed GLS periodogram with 99% (light blue) and 75% (dark blue) confidence levels (see text for details). Upper panels: upper limits for periods from 0.8 to 1000 days. Lower panels: zoom on the 0.8 to 10 day range. The red star indicates the location of the 0.24 M_J (76 M_⊕) planet in corotation claimed by Tuomi et al. (2018). The blue triangle shows the planet-mass equivalent (27 M_⊕) of the stable RV component in Kossakowski et al. (2022). Both are ruled out by the SPIRou data with a confidence higher than 99%.