GLS periodogram analysis of SPIRou RVs of TOI-1759. The cyan, blue, and red lines show the GLS periodogram calculated for subsets containing one-third, two-thirds, and the entirety of the SPIRou RV data of TOI-1759, respectively. From top to bottom, panels show this analysis for CCF RVs, CCF RVs minus GP model, LBL RVs, and LBL RVs minus GP model. The removal of the GP model shows an improvement in the signature of the planet, expected at a period of 18.850 d (dashed green line). The dashed orange and blue lines show the periods found by our GP analysis of the TESS data and B_ℓ data, respectively.