Origin of the central radio gaps in extragalactic radio sources

We propose an explanation of the origin of the central radio gaps which are usually observed in extragalactic radio sources that exhibit jet structures.An estimate was made of neutron Lorentz factors of neutrons responsible for energy transport from the central engine of active galactic nuclei (AGNs) to the jet turn-on point of typical AGNs.The probable explanations of the existence of different belts in the radio gap morphology was attempted.