Fourier power spectrum of the accretion rate in run MU2-HR after 10 kyr. The x-axis is the Fourier transform frequency normalized by the approximated orbital frequency Ω = 1/2.5 kyr⁻¹. Data (instantaneous accretion rates) were linearly interpolated in order to have a uniformly spaced sample to perform the fast Fourier transform. The gray band indicates the 0.7 − 2Ω_orb interval.