Hydrodynamical and radiative modeling of temporal H{\alpha} emission V/R   variations caused by a discontinuous mass transfer in binaries
  H{\alpha} emission V/R variations caused by a discontinous mass transfer in interacting binaries with a rapidly rotating accreting star are modelled qualititatively for the first time. The program ZEUS-MP was used for a non-linear 3-D hydrodynamical modeling of a development of a blob of gaseous material injected into an orbit around a star. It resulted in the formation of an elongated disk with a slow prograde revolution. The LTE radiative transfer program SHELLSPEC was used to calculate the H{\alpha} profiles originating in the disk for several phases of its revolution. The profiles have the form of a double emission and exhibit V/R and radial velocity variations. However, these variations should be a temporal phenomenon since imposing a viscosity in given model would lead to a circularization of the disk and fading-out of given variations. 
Pavel Chadima, Roman Firt, Petr Harmanec, Marek Wolf, Domagoj Ruzdjak,   Hrvoje Bozic, Pavel Koubsky
astro-ph.SR