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Time Dependent Photoionization of Gas Outflows in AGN

Faculty Mentor

Manuel Bautista, Ph.D.

Department

Physics

Presentation Date

4-20-2012

Document Type

Poster

Abstract

We study the dynamic effects of time varying UV ionizing continuum on radiation bounded photoionized outflows in AGN. We use a 1D hydrodynamics numerical code to verify the predictions of Bautista & Dunn (2010). It is seen that variations in the UV ionizing continuum yield nonequilibrium conditions in the plasma and create supersonic cooling and heating fronts that give the outflows. Thus, large pressure imbalances arise in the cloud, which are compensated by flow motions leading to fragmentation of the wind and dense shells at the leading ends of the outflowing clouds.

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