Abstract
One aspect of supernova remnant evolution that is relatively unstudied is the influence of an AGN environment. A high-density ambient medium and a nearby powerful continuum source will assist the cooling of shocked ejecta and swept-up gas, and recent results of simulations with appropriate heating and cooling terms are presented. A central finding is that the shocked ejecta rapidly cool to form cold dense clouds with a density, an ionization parameter, and a column density compatible with those inferred for the high-ionization component of the broad-emission-line regions in QSOs.
