Parsec-scale obscuring accretion disk with large scale magnetic field in AGN

Abstract

Magnetic field dragged from the galactic disk along with inflowing gas can provide vertical support to the geometrically and optically thick pc-scale torus in AGN. Using the Soloviev solution initially developed for Tokamaks we derive an analytical model for a rotating torus supported and confined by magnetic field. We further perform three-dimensional magneto-hydrodynamics simulations of X-ray irradiated pc-scale magnetized tori. We follow the time evolution and compare models which adopt initial conditions derived from our analytic model with simulations in which the initial magnetic flux is entirely contained within the gas torus. Numerical simulations demonstrate that the initial conditions based on the analytic solution produce a longer-lived torus and one which produces obscuration which is generally consistent with observed constraints.

Accepted to ApJ

References in corpus (13)

• Athena: A New Code for Astrophysical MHD
• Resolving the complex structure of the dust torus in the active nucleus of the Circinus galaxy
• MHD simulations of the magnetorotational instability in a shearing box with zero net flux. I. The issue of convergence
• Resolving the obscuring torus in NGC 1068 with the power of infrared interferometry: Revealing the inner funnel of dust
• Magnetically Arrested Disks and Origin of Poynting Jets: Numerical Study
• Properties of gravitoturbulent accretion disks
• Resolving the innermost parsec of Centaurus A at mid-infrared wavelengths
• Simulations of Magnetorotational Turbulence with a Higher-Order Godunov Scheme
• VLTI/VINCI observations of the nucleus of NGC 1068 using the adaptive optics system MACAO
• Large Scale B-Field in Stationary Accretion Disks
• Probing the dusty environment of the Seyfert 1 nucleus in NGC 3783 with MIDI/VLTI interferometry
• An axisymmetric hydrodynamical model for the torus wind in AGN. II: X-ray excited funnel flow
• Radiation Pressure Supported AGN Tori with Hard X-Ray and Stellar Heating

Cited by in corpus (8)

• Failed radiatively Accelerated Dusty Outflow model of the Broad Line Region in Active Galactic Nuclei. I. Analytical solution
• Circumnuclear Multi-phase Gas in Circinus Galaxy I: Non-LTE calculations of CO lines
• Physically motivated X-ray obscurer models
• Torus and polar dust dependence on AGN properties
• Hard X-Ray to Radio Multiwavelength SED Analysis of Local U/LIRGs in GOALS Sample with Self-consistent AGN Model Including Polar-dust Component
• Hypercubes of AGN Tori (HYPERCAT) -- I. Models and Image Morphology
• Binary AGN simulations with radiation pressure reveal a new duty cycle, and a reduction of gravitational torque, through 'minitori' structures
• Magneto Rotational Instability in Magnetized AGN Tori