Periodogram expectation for HD 136352 in the case of a wrong noise model (see Eq. (B.9)). Rows correspond to the true noise model, while columns correspond to the assumed wrong model. The definition z₁ of the periodogram power is used (see Eq. (4)). If the noise model was correct, the expectation of the periodogram power would be uniformly 1 (see Eq. (B.10)). The red vertical lines highlight 0.5 d, 1 d, and 1 yr. For each periodogram, we provide the analytical estimate of the FAP (using the wrong noise model) corresponding to the highest peak of the periodogram expectation.