Periodogram for binary detection model. Top: L-band dataset periodogram resulting from the binary model, with detection labels (0 for non-detections and 1 for detections). The first candidate of the periodogram yields a periodicity of 159.3 ± 0.8 days. The arrows indicate some of the harmonics of the period found. Two peaks to the right around 290 and 380 days are also prominent. The dotted horizontal lines correspond to the 1σ, 3σ, and 5σ significance levels determined by 10 000 bootstrap resamplings. Bottom: Folding of the observations with a periodicity of 159.3 days. MJD 58 356.5 is used as the reference epoch, with phase ϕ = 0. The detections, in magenta, are labelled 1 and the non-detections, in grey, are labelled 0 (a little height was added to these so they are visible in the plot).