TPHO: A Time-dependent Photoionization Model for AGN Outflows*

Abstract Outflows in active galactic nuclei (AGN) are considered a promising candidate for driving AGN feedback at large scales. However, without information on the density of these outflows we cannot determine how much kinetic power they imparting to surrounding medium. Monitoring response ionization state absorbing changes ionizing continuum provides recombination timescale outflow, which is function electron density. We have developed new self-consistent time-dependent photoionization model, tpho , enabling measurement plasma through time-resolved X-ray spectroscopy. The algorithm solves full energy and balance equations fashion all ionic species. model can therefore reproduce absorption spectrum ionized responding radiation AGN. find that when gas nonequilibrium its transmitted spectra not accurately reproduced by standard models. Our simulations with current grating observations show spectral features identified as multicomponent warm absorbers, might fact be time-changing absorber distinctive components. facilitates accurate modeling presence variable source, thus providing constraints turn location outflows. Ascertaining two parameters will provide important insight into role impact feedback.