Outflow Angles, Bulk Lorentz Factors, and Kinematics of Outflows from the Cores of Active Galactic Nuclei

Abstract

Outflow angles and bulk Lorentz factors for 43 sources that have proper motions compiled by Vermeulen & Cohen (1994) are computed on the basis of Doppler factors and observed apparent motions in the plane of the sky. These estimates of outflow angles and bulk Lorentz factors are discussed along with their agreement with orientation unified models of AGN. Intrinsic (i.e. rest frame) brightness temperatures computed by using the inverse Compton and equipartition Doppler factor are discussed along with their relevance to the ``Inverse Compton catastrophe''. Intrinsic luminosity densities and luminosities are presented, and the role of systematic errors is discussed. These studies are carried out using a sample of 100 compact radio sources compiled by Ghisellini et al. (1993). Error estimates for previously computed inverse Compton Doppler factors and equipartition Doppler factors are presented for these sources, along with a few updates of these Doppler factor estimates.