Probing the Gravitational Redshift Effect from the Relativistic Jets of Compact AGN

I explore a possibility to measure the gravitational redshift (GR) effect in the gravitational field of massive central nuclei residing in active galaxies (AGN). The activity of central nuclei is associated with the bipolar jet ejection of relativistic plasma which produces strong radio emission. I consider the behavior of the flux density variations of the jet plasma as a result of GR effect from a Schwarzschild black hole, and I discuss possibilities to detect the GR effect from the relativistic jets of compact AGN with present and future radio facilities.