Probing Active Galactic Nuclei with Radio Techniques

Active galactic nuclei (AGNs) derive their power from accretion onto supermassive black holes located in the centers of galaxies.  Many phenomena connected with active galaxies derive from physical processes associated with the central engine’s accretion flow, which, depending on the mass accretion rate and possibly other parameters, such as black hole spin, generate outflows and relativistic jets.  The energy output from the nucleus, whether it be radiative or kinetic, may have a profound influence on the evolution of the host galaxy and its larger scale environment.

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