On the structure of Accretion Disks with Outflows

Abstract

In order to study the outflows from accretion disks, we solve the set of hydrodynamic equations for accretion disks in the spherical coordinates ($r\theta \varphi$) to obtain the explicit structure along the $\theta$ direction. Using self-similar assumptions in the radial direction, we change the equations to a set of ordinary differential equations (ODEs) about the $\theta$-coordinate, which are then solved with symmetrical boundary conditions in the equatorial plane, and the velocity field is obtained. The $\alpha$ viscosity prescription is applied and an advective factor $f$ is used to simplify the energy equation.The results display thinner, quasi-Keplerian disks for Shakura-Sunyaev Disks (SSDs) and thicker, sub-Keplerian disks for Advection Dominated Accretion Flows (ADAFs) and slim disks, which are consistent with previous popular analytical models. However, an inflow region and an outflow region always exist, except when the viscosity parameter $\alpha$ is too large, which supports the results of some recent numerical simulation works. Our results indicate that the outflows should be common in various accretion disks and may be stronger in slim disks, where both advection and radiation pressure are dominant. We also present the structure dependence on the input parameters and discuss their physical meanings. The caveats of this work and possible improvements in the future are discussed.

24 pages, 20 figures. Accepted for publication in ApJ

References in corpus (27)

• Advection-Dominated Accretion: A Self-Similar Solution
• On the Fate of Gas Accreting at a Low Rate onto a Black Hole
• Advection-Dominated Accretion: Self-Similarity and Bipolar Outflows
• Thermal Equilibria of Accretion Disks
• Accretion disc viscosity: how big is alpha?
• Super-critical Accretion Flows around Black Holes: Two-dimensional, Radiation-pressure-dominated Disks with Photon-trapping
• Hydrodynamical Non-radiative Accretion Flows in Two-Dimensions
• Global Radiation-Magnetohydrodynamic Simulations of Black Hole Accretion Flow and Outflow: Unified Model of Three States
• XMM-NEWTON Reveals the Quasar Outflow in PG 1115+080
• Interferometric Measurements of Variable 340 GHz Linear Polarization in Sagittarius A*
• Two Dimensional Adiabatic Flows onto a Black Hole: I. Fluid Accretion
• Two-dimensional models of hydrodynamical accretion flows into black holes
• Relativistic slim disks with vertical structure
• Super Eddington Slim Accretion Disks with Winds
• Turbulent Stresses in Local Simulations of Radiation-Dominated Accretion Disks, and the Possibility of the LIghtman-Eardley Instability
• Why Is Supercritical Disk Accretion Feasible?
• The Influences of Outflow on the Dynamics of Inflow
• Black-Hole Accretion Discs and Jets at Super-Eddington Luminosity
• A Note on the Slim Accretion Disk Model
• On the convective instability of hot radiative accretion flows
• Modified Slim-Disk Model Based on Radiation-Hydrodynamic Simulation Data: The Conflict Between Outflow and Photon Trapping
• Three-dimensional structure of an alpha accretion disk
• Global Slim Accretion Disk Solutions Revisited
• An investigation of magnetic field distortions in accretion discs around neutron stars. I. Analysis of the poloidal field component
• Does the Mass Accretion Rate Depend On the Radius of the Accreting Star?
• The Influence of Hydrodynamical Winds on Hot Accretion Disk Solutions
• Thermally Driven Winds from Radiatively Inefficient Accretion Flows

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• Rotating Accretion Flows: From Infinity to the Black Hole
• Mechanism of Outflows in Accretion System: Advective Cooling Cannot Balance Viscous Heating?
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• Structure of Advection-Dominated Accretion Disks with Outflows: Role of Toroidal Magnetic Field
• Revisiting vertical structure of neutrino-dominated accretion disks: Bernoulli parameter, neutrino trapping and other distributions
• Central Engine of Late-Time X-ray Flares with Internal Origin
• Exploring the accretion model of M87 and 3C 84 with the Faraday rotation measure observations
• Two-dimensional inflow-wind solution of black hole accretion with an evenly symmetric magnetic field
• The Effect of Large Scale Magnetic Field on Outflow in ADAFs: an Odd Symmetry Configuration
• The Effects of Magnetic Field Strength on Properties of Wind Generated from Hot Accretion Flow
• Comparison between RHD simulation of supercritical accretion flows and steady model with outflows
• Role of thermal conduction in an advective accretion with bipolar outflows
• Viscous accretion of a polytropic self-gravitating disk in the presence of wind
• The 2D disk structure with advective transonic inflow-outflow solutions around black holes
• How does an asymmetric magnetic field change the vertical structure of a hot accretion flow?
• An investigation of magnetic field distortions in accretion discs around neutron stars - II. Analysis of the toroidal field component
• Structure of a hot accretion flow in the presence of outflow and convection with large ordered magnetic field
• The effects of toroidal magnetic field on the vertical structure of hot accretion flows
• Analytical solution for the structure of ADAFs
• Two-dimensional Inflow-Wind Solution of Hot Accretion Flow. I. Hydrodynamics
• Vertical structure of Advection dominated Accretion Flows
• Exact analytical solutions for ADAFs
• Accretion flows with comparable radiation and gas pressures
• The influence of outflow in supercritical accretion flows
• The influence of outflows on the 1/f-like luminosity fluctuations
• On the nature of jets from a main sequence companion at the onset of common envelope evolution
• Self-similar solutions for finite size advection-dominated accretion flows
• Three-dimensional simulations of accretion flow in the progenitor of Tycho's supernova
• Accretion rates of stellar-mass compact objects embedded in AGN discs
• A 2.5-dimensional viscous, resistive, advective magnetized accretion-outflow coupling in black hole systems: A higher order polynomial approximation. I
• Direct Collapse to Precursors of Supermassive Black Hole Seeds:Radiation-feedback-generated Outflows
• Heating or Cooling: Study of Advective Heat Transport in the Inflow and the Outflow of Optically Thin Advection-dominated Accretion Flows
• Self-similar solution of hot accretion flow: the role of kinematic viscosity coefficient