A method for estimating the distances of extragalactic radio sources with jets using VLBI

A method is proposed for estimating the distances to extragalactic radio sources using spec-troscopic data on the sizes of the broad-line regions of quasars and radio galaxies RBL and VLBI data on the transverse angular sizes of the radio jets emerging from their nuclei (θθj). This approach is based on the fact that observational data on the transverse linear sizes of radio jets (lθj) associated with the nearest radio sources and theoretical concepts about the formation of radio jets in the central regions of a magnetized accretion disk suggest that (lθj) and RBL should be approximately equal.