Spin of LIGO/VIRGO merging black holes as the result of binary evolution

Understand

Recently discovered bursts of gravitational waves provide a good opportunity to verify the current view on the evolution of close binary stars.

• Modern population synthesis computer programs help to study this evolution from two main sequence stars up to the formation of compact remnants.
• To calculate the evolution of predecessors of black hole (BH) mergers we used the `Scenario Machine' code.
• The scenario modelling allowed to describe the evolution of systems for which the final stage is a BH+BH merger and showed the plausibility of modern evolutionary scenarios for binary stars and population synthesis models based on it.