Binary detection probability simulations following our observational setup. Top panel: detection probability as a function of the orbital period P (computed assuming a flat mass-ratio distribution), and bottom panel: this as a function of mass ratio q (computed assuming a flat logP distribution). In both panels, the black line shows our first estimate of the binary detection probability taking the SB1 bias into account, and the orange line shows the detection probability, which also includes the reduced sensitivity for detecting near equal-mass binaries. The colored arrows in the bottom panel correspond to the mass ratio for which we compute the SB2 bias (see Fig. 3).