Cataclysmic Variables - a Reach Laboratory for Accretion Processes
2017 September 07
2017 November 15
We show that cataclysmic variables (CVs) are important aboratories for investigation of accretion processes. It is mportant that a CV binary works as a system strongly variable with time. The haracter of the long-term activity (and operation of the emission processes) largely depend on the mass inflow into the lobe of the WD, and on the strength of the magnetic field of this WD. Strong structural changes of the emitting regions with time often accompany the transitions between the states of activity. Cycles of this activity (often on timescale of months to years) are common. Episodic events are the common properties of this activity which often consists of the discrete levels of intensity and/or discrete phenomena (e.g. outbursts, low state episodes). We also show that classical nova explosion has the large consequences for the type of activity (and even its change) after returning to quiescence in some CVs. Investigation of interplay of various emitting regions (and emission processes) in various states of activity is very important.