The goal of the project is the study of the fast stochastic oscillations generated by turbulent accretion in cosmic objects, where the main driving mechanism is the accretion through a disc. This stochastic flickering usually does not originate only from a single source, hence the light curve is a superposition of more signals. Individual components can be identified by detailed study of the periodogram. For analysis of such complicated periodograms data with high cadence on long time-base are required. Ideal instrument satisfying such demands is the Kepler spacecraft. Its one-minute cadence on time-base over hundreds of days is a unique opportunity for our study. Together with our flickering simulating model based on turbulent accretion process we want to identify individual parts of the complicated periodograms calculated from Kepler telescope data, to localize their source and bring a complex model of accretion in some types of cosmic objects.