Three-Dimensional Simulations of Inflows Irradiated by a Precessing Accretion Disk in Active Galactic Nuclei: Formation of Outflows - AstrophysicsReport as inadecuate




Three-Dimensional Simulations of Inflows Irradiated by a Precessing Accretion Disk in Active Galactic Nuclei: Formation of Outflows - Astrophysics - Download this document for free, or read online. Document in PDF available to download.

Abstract: We present three-dimensional 3-D hydrodynamical simulations of gas flows inthe vicinity of an active galactic nucleus AGN powered by a precessingaccretion disk. We consider the effects of the radiation force from such a diskon its environment on a relatively large scale up to ~10 pc. We implicitlyinclude the precessing disk by forcing the disk radiation field to precessaround a symmetry axis with a given period $P$ and a tilt angle $\Theta$.We study time evolution of the flows irradiated by the disk, and investigatebasic dependencies of the flow morphology, mass flux, angular momentum ondifferent combinations of $\Theta$ and $P$. We find the gas flow settles into aconfiguration with two components, 1 an equatorial inflow and 2 a bipolarinflow-outflow with the outflow leaving the system along the poles thedirections of disk normals. However, the flow does not always reach a steadystate. We find that the maximum outflow velocity and the kinetic outflow powerat the outer boundary can be reduced significantly with increasing $\Theta$. Wealso find that of the mass inflow rate across the inner boundary does notchange significantly with increasing $\Theta$. Abbreviated



Author: Ryuichi Kurosawa, Daniel Proga

Source: https://arxiv.org/







Related documents