Left: Variation in SNR values with α for different assumed values of SNR_tot(2)∈[0.02, 0.10] (see plot annotation), with the vertical dotted line marking the standard value of α = 2 and the vertical dashed line marking the optimal value of α ≃ 1.2. The corresponding horizontal dotted and dashed lines mark the intersection with the red curve, having SNR_tot(2) = 0.050. Right: Corresponding detection probabilities, p_final, for ν_max = 2000 μHz and T = 1 month.