The Effect of Radiation Pressure on Photoionized Plasma

  Ari Laor  
Technion - Israel Institute of Technology

Photoionization models calculate the energy transfer from the ionizing radiation to the gas. The associated momentum transfer is not always included. This radiation pressure sets the density structure within the photoionized gas, in particular if the gas is not radially accelerating. I will present the results of such calculations for photoionized gas in AGN, which provide a simple explanation for a range of the observed properties.