Study of general relativistic magnetohydrodynamic accretion flow around black holes

Abstract

We present a novel approach to study the global structure of steady, axisymmetric, advective, geometrically thin, magnetohydrodynamic (MHD) accretion flow around black holes in full general relativity (GR). Considering ideal MHD conditions and relativistic equation of state (REoS), we solve the governing equations to obtain all possible smooth global accretion solutions. We examine the dynamical and thermodynamical properties of accreting matter in terms of the flow parameters, namely energy ($\mathcal{E}$), angular momentum ($\mathcal{L}$), and local magnetic fields. For a thin GRMHD flow, we observe that toroidal component ($b^{\varphi }$) of the magnetic fields generally dominates over radial component ($b^r$) at the disk equatorial plane. This evidently suggests that toroidal magnetic field indeed plays important role in regulating the disk dynamics. We further notice that the disk remains mostly gas pressure ($p_{\mathrm{gas}}$) dominated ($\beta =p_{\mathrm{gas}}/p_{\mathrm{mag}}>1$, $p_{\mathrm{mag}}$ refers magnetic pressure) except at the near horizon region, where magnetic fields become dynamically important ($\beta \sim 1$). We observe that Maxwell stress is developed that eventually yields angular momentum transport inside the disk. Towards this, we calculate the viscosity parameter ($\alpha$) that appears to be radially varying. In addition, we examine the underlying scaling relation between $\alpha$ and $\beta$, which clearly distinguishes two domains coexisted along the radial extent of the disk. Finally, we discuss the utility of the present formalism in the realm of GRMHD simulation studies.

arXiv comment16 pages, 11 figures, Accepted in MNRAS

References in corpus (71)

• X-ray Properties of Black-Hole Binaries
• Advection-Dominated Accretion: Underfed Black Holes and Neutron Stars
• Hot Accretion Flows Around Black Holes
• HARM: A Numerical Scheme for General Relativistic Magnetohydrodynamics
• Magnetically Arrested Disk: An Energetically Efficient Accretion Flow
• First M87 Event Horizon Telescope Results. VIII. Magnetic Field Structure near The Event Horizon
• Foundations of Black Hole Accretion Disk Theory
• General Relativistic Magnetohydrodynamic Simulations of Jet Formation and Large-Scale Propagation from Black Hole Accretion Systems
• A Measurement of the Electromagnetic Luminosity of a Kerr Black Hole
• Spectral Properties of Accretion Disks Around Galactic and Extragalactic Black Holes
• Three-dimensional MHD Simulations of Radiatively Inefficient Accretion Flows
• The evolution of the timing properties of the black-hole transient GX 339-4 during its 2002/2003 outburst
• First M87 Event Horizon Telescope Results. VII. Polarization of the Ring
• Magnetically Driven Accretion Flows in the Kerr Metric I: Models and Overall Structure
• The Event Horizon General Relativistic Magnetohydrodynamic Code Comparison Project
• Global Magnetohydrodynamical Simulations of Accretion Tori
• The Black Hole Accretion Code
• Black hole flares: ejection of accreted magnetic flux through 3D plasmoid-mediated reconnection
• Magnetohydrodynamical Non-radiative Accretion Flows in Two-Dimensions
• Global MHD Simulation of the Inner Accretion Disk in a Pseudo-Newtonian Potential
• Two Dimensional Adiabatic Flows onto a Black Hole: I. Fluid Accretion
• Accretion flow dynamics during the evolution of timing and spectral properties of GX 339-4 during its 2010-11 outburst
• Correlation among QPO frequencies and Quiescence-state Duration in Black Hole Candidate GRS 1915+105
• Magnetohydrodynamical Accretion Flows: Formation of Magnetic Tower Jet and Subsequent Quasi-Steady State
• Angular Momentum Transport in Accretion Disks: Scaling Laws in MRI-driven Turbulence
• General Relativistic Simulations of Jet Formation in a Rapidly Rotating Black Hole Magnetosphere
• Accretion Discs with Strong Toroidal Magnetic Fields
• Magnetohydrodynamic Simulations of Active Galactic Nucleus Disks and Jets
• Global Simulations of Accretion Disks I: Convergence and Comparisons with Local Models
• Event Horizon Telescope observations of the jet launching and collimation in Centaurus A
• Magnetized Tori around Kerr Black Holes: Analytic Solutions with a Toroidal Magnetic Field
• Viscous accretion discs around rotating black holes
• Global MHD Simulations of Cylindrical Keplerian Disks
• Plasmoid formation in global GRMHD simulations and AGN flares
• Polarimetric properties of Event Horizon Telescope targets from ALMA
• High Resolution Simulations of the Plunging Region in a Pseudo-Newtonian Potential: Dependence on Numerical Resolution and Field Topology
• Efficiency of Thin Magnetically-Arrested Disks Around Black Holes
• Properties of Accretion Shock Waves in Viscous Flows Around Black Holes
• Strongly magnetized accretion disks: structure and accretion from global magnetohydrodynamic simulations
• The Polarized Image of a Synchrotron Emitting Ring of Gas Orbiting a Black Hole
• Discriminating Accretion States via Rotational Symmetry in Simulated Polarimetric Images of M87
• Effects of Fluid Composition on Spherical Flows around Black Holes
• AstroSat view of MAXI J1535-571: broadband spectro-temporal features
• What really makes an accretion disc MAD
• Self-Similar Solutions for ADAF with Toroidal Magnetic Fields
• General-Relativistic MHD for the Numerical Construction of Dynamical Spacetimes
• Empirical relation between angular momentum transport and thermal-to-magnetic pressure ratio in shearing box simulations
• Behaviour of dissipative accretion flows around black holes
• Thin Disk Theory with a Non-Zero Torque Boundary Condition and Comparisons with Simulations
• AstroSat view of GRS 1915+105 during the Soft State: Detection of HFQPOs and estimation of Mass and Spin
• Thermal Equilibria of Optically Thin, Magnetically Supported, Two-Temperature, Black Hole Accretion Disks
• Mass loss from advective accretion disc around rotating black holes
• Steady Models of Optically Thin, Magnetically Supported Black Hole Accretion Disks
• Accretion Flow Dynamics During 1999 Outburst of XTE J1859+226 - Modeling of Broadband Spectra and Constraining the Source Mass
• The Accretion flow in M87 is really MAD
• Jets, disc-winds and oscillations in general relativistic, magnetically driven flows around black hole
• Steady General Relativistic Magnetohydrodynamic Inflow/Outflow Solution along Large-Scale Magnetic Fields that Thread a Rotating Black Hole
• AstroSat and MAXI view of the Black Hole binary 4U 1630-472 during 2016 and 2018 Outbursts
• Dynamical Structure of Viscous Accretion Disks with Shocks
• Estimation of mass outflow rates from dissipative accretion disc around rotating black holes
• Strongly magnetized accretion discs require poloidal flux
• Wide-band view of High Frequency QPOs of GRS 1915+105 in 'softer' variability classes observed with AstroSat
• Computation of mass loss from viscous accretion disc in presence of cooling
• Properties of two-temperature magnetized advective accretion flow around rotating black hole
• Low angular momentum relativistic hot accretion flow around Kerr black holes with variable adiabatic index
• Global Structure of Optically Thin, Magnetically Supported, Two-Temperature, Black Hole Accretion Disks
• Properties of magnetically supported dissipative accretion flow around black holes with cooling effects
• The Effect of Toroidal Magnetic Field on Thickness of a Viscose-Resistive Hot Accreting Flow
• Revealing the nature of the transient source MAXI J0637-430 through spectro-temporal analysis
• Relativistic viscous accretion flow model for ULX sources: A case study for IC 342 X-1
• Standing Shocks in Magnetized Dissipative Accretion Flow around Black Holes

Cited by in corpus (5)

• General relativistic hydrodynamic simulations of perturbed transonic accretion
• Global Transonic Solution of Hot Accretion Flow with Thermal Conduction
• Accretion flow in deformed Kerr spacetime: Spectral energy distributions from free-free emission
• General relativistic viscous accretion flow around Konoplya-Zhidenko black hole
• Hamiltonian Formulation of Relativistic Magnetohydrodynamic Accretion on a General Spherically Symmetric and Static Black Hole: Quantum effects on Shock States