Study of Correlations and Frequency-Phase Synchronization in the Dynamics of the Spectral Density of Quasars Radio Emission Flux

In this study, we consider representative types of dependences of parameters and characteristics calculated within the framework of Flicker-Noise Spectroscopy for simultaneously recorded time signals of the spectral density of the radio emission flux of quasars generated by the internal regions of the accretion disk at different frequencies. The quasars under study have different types of radio emission dynamics. The dynamics of the first quasar is distinguished by a clearly expressed set of eigenfrequencies with weakly manifested non-stationarity effects and a high level of frequency-phase synchronization. The dynamics of the second quasar is characterized by high non-stationarity, the absence of a distinguishable set of resonant frequencies and a significant influence of dynamic intermittency effects.