Anchoring polar magnetic field in a stationary thick accretion disk
arXiv:1707.07669 · doi:10.3847/1538-4357/aa81c1
Abstract
We investigate the properties of a hot accretion flow bathed in a poloidal magnetic field. We consider an axisymmetric viscous resistive flow in the steady state configuration. We assume the dominant mechanism of energy dissipation is due to turbulence viscosity and magnetic diffusivity. A certain fraction of that energy can be advected towards the central compact object. We employ self-similar method in the radial direction to find a system of ODEs with just one varible, in the spherical coordinates. For the existence and maintaining of a purely poloidal magnetic in a rotating thick disk, we find the necessary condition is a constant value of angular velocity along a magnetic field line. We obtain an analytical solution for the poloidal magnetic flux. We explore possible changes in the vertical structure of the disk under the influences of even symmetric and asymmetric magnetic fields. Our results reveal that a polar magnetic field with even symmetry about the equatorial plane makes the disk vertically thin. Moreover, the accretion rate decreases when we consider a strong magnetic field. Finally, we notice hot magnetized accretion flows can be fully advected even in a slim shape.
arXiv commentAccepted for publication in Astrophysical Journal
References in corpus (45)
- Advection-Dominated Accretion: A Self-Similar Solution
- Advection-Dominated Accretion: Underfed Black Holes and Neutron Stars
- Efficient Generation of Jets from Magnetically Arrested Accretion on a Rapidly Spinning Black Hole
- General Relativistic Magnetohydrodynamic Simulations of Magnetically Choked Accretion Flows around Black Holes
- Advection-Dominated Accretion: Self-Similarity and Bipolar Outflows
- GRMHD Simulations of Magnetized Advection Dominated Accretion on a Non-Spinning Black Hole: Role of Outflows
- Local Study of Accretion Disks with a Strong Vertical Magnetic Field: Magnetorotational Instability and Disk Outflow
- Magnetohydrodynamical Non-radiative Accretion Flows in Two-Dimensions
- Transport of Large Scale Poloidal Flux in Black Hole Accretion
- Accretion disc dynamo activity in local simulations spanning weak-to-strong net vertical magnetic flux regimes
- MHD Simulations of Global Accretion Disks with Vertical Magnetic Fields
- General relativistic simulations of black hole-neutron star mergers: Effects of magnetic fields
- Probing the magnetic field structure in Sgr A* on Black Hole Horizon Scales with Polarized Radiative Transfer Simulations
- Bipolar jets launched from magnetically diffusive accretion disks. I. Ejection efficiency vs field strength and diffusivity
- High accretion rates in magnetised Keplerian discs mediated by a Parker instability driven dynamo
- Mechanism of Outflows in Accretion System: Advective Cooling Cannot Balance Viscous Heating?
- Radial Transport of Large-Scale Magnetic Fields in Accretion Disks. I. Steady Solutions and an Upper Limit on the Vertical Field Strength
- Jet formation from massive young stars: Magnetohydrodynamics versus radiation pressure
- One-sided Outflows/Jets from Rotating Stars with Complex Magnetic Fields
- Magneto-hydrodynamical Numerical simulation of wind production from black hole hot accretion flows at very large radii
- The Effects of Thermal Conduction on the ADAF with a Toroidal Magnetic Field
- Radiation Pressure-supported Accretion Disks: Vertical Structure, Energy Advection, and Convective Stability
- Dynamical structure of magnetized dissipative accretion flow around black holes
- Strongly magnetized accretion discs require poloidal flux
- On the Decay of Strong Magnetization in Global Disc Simulations with Toroidal Fields
- Advection-Dominated Accretion Disks: Geometrically Slim or Thick?
- Radial Transport of Large-Scale Magnetic Fields in Accretion Disks. II. Relaxation to Steady States
- Asymmetric MHD Outflows/Jets from Accreting T Tauri Stars
- The Effect of Toroidal Magnetic Field on Thickness of a Viscose-Resistive Hot Accreting Flow
- Structure of Advection-Dominated Accretion Disks with Outflows: Role of Toroidal Magnetic Field
- Two-dimensional inflow-wind solution of black hole accretion with an evenly symmetric magnetic field
- The role of thermal conduction in magnetized viscous-resistive ADAFs
- Self-Similar Solutions of Viscous-Resistive ADAFs With Poloidal Magnetic Fields
- A Model for Quasi-Spherical Magnetized Accretion Flow
- The Effect of Large Scale Magnetic Field on Outflow in ADAFs: an Odd Symmetry Configuration
- Magnetic-Field Structure in the Accretion Disks of Semi-Detached Binary Systems
- Time Dependence of Advection Dominated Accretion Flow with a Toroidal Magnetic Field
- Time-Dependent of Accretion Flow with Toroidal Magnetic Field
- Equilibria of a Self-Gravitating, Rotating Disk Around a Magnetized Compact Object
- An investigation of magnetic field distortions in accretion discs around neutron stars. I. Analysis of the poloidal field component
- Self-similar structure of a hot magnetized flow with thermal conduction
- How does an asymmetric magnetic field change the vertical structure of a hot accretion flow?
- Structure of a hot accretion flow in the presence of outflow and convection with large ordered magnetic field
- Effects of magnetic field topology in black hole-neutron star mergers: Long-term simulations
- Stationary Axisymmetric Configuration of the Resistive Thick Accretion Tori around a Schwarzschild Black Hole