2008/06/23 by A. Dorodnitsyn, T. Kallman, D. Proga · 40 citations
Physics and Astronomy · #Accretion (finance) #Active galactic nucleus #Astronomy and Astrophysical Research #Astrophysical Phenomena and Observations #Flow (mathematics) #Funnel #Galaxies: Formation, Evolution, Phenomena #Line (geometry) #Outflow #Spectral line #Torus #astro-ph
paper · pdf · doi:10.1086/591418
published in The Astrophysical Journal 687(1), 97-110 (IOP Publishing) · 32 pages, 11 figures Accepted for publication in ApJ
arxiv created 2008/06/23 · openalex publication_date 2008/10/24 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
We have calculated a series of models of outflows from the obscuring torus in active galactic nuclei (AGNs). Our modeling assumes that the inner face of a rotationally supported torus is illuminated and heated by the intense X-rays from the inner accretion disk and black hole. As a result of such heating, a strong biconical outflow is observed in our simulations. We calculate three-dimensional hydrodynamical models, assuming axial symmetry and including the effects of X-ray heating, ionization, and radiation pressure. We discuss the behavior of a large family of these models, their velocity fields, mass fluxes, and temperature, as functions of the torus properties and X-ray flux. Synthetic warm- absorber spectra are calculated, assuming pure absorption, for sample models at various inclination angles and observing times. We show that these models have mass fluxes and flow speeds comparable to those inferred from observations of Seyfert 1 warm absorbers, and that they can produce rich absorption-line spectra.