Accretion Processes Around Black Holes And Neutron Stars: Advective Disk Paradigm

We review models which include advective accretion disks onto compact objects and discuss the influence of the centrifugal pressure supported high density region close to the compact objects on the emitted spectra. We show that the stationary and non-stationary spectral properties (such as low and high states, quasi-periodic oscillations, quiescent and rising phases of X-ray novae, etc.) of black hole candidates could be satisfactorily explained by the advective disk models.