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We report on time-dependent axisymmetric simulations of an X-ray excited flowfrom a parsec-scale, rotating, cold torus around an active galactic nucleus.Our simulations account for radiative heating and cooling and radiationpressure force. The simulations follow the development of a broad bi-conicaloutflow induced mainly by X-ray heating. We compute synthetic spectra predictedby our simulations. The wind characteristics and the spectra support thehypothesis that a rotationally supported torus can serve as the source of awind which is responsible for the warm absorber gas observed in the X-rayspectra of many Seyfert galaxies.

An axisymmetric, hydrodynamical model for the torus wind in AGN