Great Lakes Quasar SymposiumWestern Science


Using Photoionization to Understand Outflows in AGN and Quasars

Karen Leighly (University of Oklahoma)

Many studies of quasars and AGN use the emission and absorption lines in the infrared/optical/UV band, either as direct diagnostics or as probes of the gas physical conditions. These lines are powered by photoionization. In this talk, I will explain how a basic understanding of photoionization in the AGN context can be used to estimate the physical conditions, independent of photoionization modeling. I will illustrate using results from my research.