Black hole mergers : can gas discs solve the ‘ final parsec ’ problem ?

We compute the e ffect of an orbiting gas disc in promoting the coalescence of a c entral supermassive black hole binary. Unlike earlier studies, we consider a finite mass of gas with explicit time dependence: we do not assume that the gas neces sarily adopts a steady state or a spatially constant accretion rate, i.e. that the merging b lack hole was… CONTINUE READING