Stream-disk overflow in semidetached binaries

The paper discusses possible observational manifestations of the stream from the inner Lagrange point overflowing the edge of the accretion disk in semidetached binaries. It is shown that for a system with a mass ratio q = 0.6, the stream-disk overflow produces complex flow structure: the stream is divided into several smaller flows colliding with the disk at different radii. The paper presents the results of three-dimensional gasdynamic modelling and a synthetic Doppler tomogram based on the modelling results, where possible locations of bright spots, associated with the process of stream-disk overflow are noted.