Ensemble power spectral density of SDSS quasars in UV/optical bands

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Fig. 11.

Normalization, i.e. A_amp in Eq. (3) (left panel), and slope, i.e. B_amp in the same equation (right panel), plotted as a function of M_BH. The parameters plotted in these panels determine how the PSD amplitude (plotted in Fig. 11) depends on BH mass and accretion rate.

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