Skip to main content
U.S. Department of Energy
Office of Scientific and Technical Information

Flux Eruption Events Drive Angular Momentum Transport in Magnetically Arrested Accretion Flows

Journal Article · · The Astrophysical Journal
 [1];  [1]
  1. Harvard Univ., Cambridge, MA (United States). Black Hole Initiative; Harvard-Smithsonian Center for Astrophysics, Cambridge, MA (United States)
We evolve two high-resolution general relativistic magnetohydrodynamic simulations of advection-dominated accretion flows around nonspinning black holes (BHs), each over a duration ~3 × 105GMBH/c3. One model captures the evolution of a weakly magnetized (SANE) disk and the other that of a magnetically arrested disk (MAD). Magnetic flux eruptions in the MAD model push out gas from the disk and launch strong winds with outflow efficiencies at times reaching 10% of the incoming accretion power. Despite the substantial power in these winds, average mass outflow rates remain low out to a radius ~100GMBH/c2, only reaching ~60%–80% of the horizon accretion rate. The average outward angular momentum transport is primarily radial in both modes of accretion, but with a clear distinction: magnetic flux eruption–driven disk winds cause a strong vertical flow of angular momentum in the MAD model, while for the SANE model, the magnetorotational instability (MRI) moves angular momentum mostly equatorially through the disk. Further, we find that the MAD state is highly transitory and nonaxisymmetric, with the accretion mode often changing to a SANE-like state following an eruption before reattaining magnetic flux saturation with time. The Reynolds stress changes directions during such transitions, with the MAD (SANE) state showing an inward (outward) stress, possibly pointing to intermittent MRI-driven accretion in MADs. Pinning down the nature of flux eruptions using next-generation telescopes will be crucial in understanding the flow of mass, magnetic flux, and angular momentum in sub-Eddington accreting BHs like M87* and Sagittarius A*.
Research Organization:
Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States). Oak Ridge Leadership Computing Facility (OLCF)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES). Scientific User Facilities (SUF)
Grant/Contract Number:
AC05-00OR22725
OSTI ID:
2424013
Journal Information:
The Astrophysical Journal, Journal Name: The Astrophysical Journal Journal Issue: 1 Vol. 941; ISSN 0004-637X
Publisher:
IOP PublishingCopyright Statement
Country of Publication:
United States
Language:
English

References (68)

Ion-supported tori and the origin of radio jets journal January 1982
Explaining the spectrum of Sagittarius A* with a model of an accreting black hole journal April 1995
On the fate of gas accreting at a low rate on to a black hole journal February 1999
Disk-Accretion onto a Black Hole. II. Evolution of the Hole journal July 1974
A two-temperature accretion disk model for Cygnus X-1 - Structure and spectrum journal February 1976
Relativistic fluid disks in orbit around Kerr black holes journal July 1976
Bimodal behavior of accretion disks - Theory and application to Cygnus X-1 transitions journal June 1977
A powerful local shear instability in weakly magnetized disks. I - Linear analysis. II - Nonlinear evolution journal July 1991
Advection-dominated accretion: Self-similarity and bipolar outflows journal May 1995
Advection-dominated accretion: A self-similar solution journal June 1994
Thermal equilibria of accretion disks journal January 1995
The Magnetohydrodynamics of Convection‐dominated Accretion Flows journal September 2002
A Numerical Method for General Relativistic Magnetohydrodynamics journal May 2003
Interferometric Detection of Linear Polarization from Sagittarius A* at 230 GHz journal May 2003
HARM: A Numerical Scheme for General Relativistic Magnetohydrodynamics journal May 2003
Chandra X‐Ray Spectroscopic Imaging of Sagittarius A* and the Central Parsec of the Galaxy journal July 2003
Three‐dimensional Magnetohydrodynamic Simulations of Radiatively Inefficient Accretion Flows journal August 2003
Nonthermal Electrons in Radiatively Inefficient Accretion Flow Models of Sagittarius A* journal November 2003
The Fate of Nonradiative Magnetized Accretion Flows: Magnetically Frustrated Convection journal September 2003
Black Hole Spin Evolution journal February 2004
Spin, Accretion, and the Cosmological Growth of Supermassive Black Holes journal February 2005
An Unambiguous Detection of Faraday Rotation in Sagittarius A* journal December 2006
Magnetically Arrested Disks and the Origin of Poynting Jets: A Numerical Study journal April 2008
Numerical Simulation of hot Accretion Flows. ii. Nature, Origin, and Properties of Outflows and Their Possible Observational Applications journal December 2012
Numerical Simulation of hot Accretion Flows. iii. Revisiting wind Properties Using the Trajectory Approach journal May 2015
General Relativistic Modeling of Magnetized Jets from Accreting Black Holes journal July 2012
The Structure of the m87 jet: a Transition from Parabolic to Conical Streamlines journal January 2012
Measuring mass Accretion rate onto the Supermassive Black hole in m87 Using Faraday Rotation Measure with the Submillimeter Array journal February 2014
Sgr A* near-infrared flares from reconnection events in a magnetically arrested disc journal August 2020
Observational signatures of disc and jet misalignment in images of accreting black holes journal September 2020
Spectral and imaging properties of Sgr A* from high-resolution 3D GRMHD simulations with radiative cooling journal October 2020
Large-scale poloidal magnetic field dynamo leads to powerful jets in GRMHD simulations of black hole accretion with toroidal field journal April 2020
Flares in the Galactic Centre – I. Orbiting flux tubes in magnetically arrested black hole accretion discs journal January 2021
General relativistic MHD simulations of non-thermal flaring in Sagittarius A* journal September 2021
Magnetically modified spherical accretion in GRMHD: reconnection-driven convection and jet propagation journal February 2021
What really makes an accretion disc MAD journal January 2022
Jets in magnetically arrested hot accretion flows: geometry, power, and black hole spin-down journal February 2022
Sgr A* X-ray flares from non-thermal particle acceleration in a magnetically arrested disc journal February 2022
Semi-implicit scheme for treating radiation under M1 closure in general relativistic conservative fluid dynamics codes journal January 2013
Energy, momentum and mass outflows and feedback from thick accretion discs around rotating black holes journal November 2013
Numerical simulations of super-critical black hole accretion flows in general relativity journal January 2014
Three-dimensional simulations of supercritical black hole accretion discs – luminosities, photon trapping and variability journal January 2016
Inside the Bondi radius of M87 journal May 2015
Efficiency of thin magnetically arrested discs around black holes journal July 2016
The disc-jet symbiosis emerges: modelling the emission of Sagittarius A* with electron thermodynamics journal February 2017
GRRMHD Simulations of Tidal Disruption Event Accretion Disks around Supermassive Black Holes: Jet Formation, Spectra, and Detectability journal November 2018
Accelerating AGN jets to parsec scales using general relativistic MHD simulations journal September 2019
Two-temperature, Magnetically Arrested Disc simulations of the jet from the supermassive black hole in M87 journal April 2019
Are ultralong gamma-ray bursts powered by black holes spinning down? journal August 2015
Formation of precessing jets by tilted black hole discs in 3D general relativistic MHD simulations journal October 2017
Magnetically Arrested Disk: an Energetically Efficient Accretion Flow: Fig. 1 journal December 2003
General relativistic magnetohydrodynamic simulations of the jet formation and large-scale propagation from black hole accretion systems journal June 2006
The signature of the magnetorotational instability in the Reynolds and Maxwell stress tensors in accretion discs journal October 2006
Simulations of magnetized discs around black holes: effects of black hole spin, disc thickness and magnetic field geometry: Simulations of magnetized discs journal August 2010
General relativistic magnetohydrodynamic simulations of magnetically choked accretion flows around black holes: Magnetically choked accretion flows journal June 2012
GRMHD simulations of magnetized advection-dominated accretion on a non-spinning black hole: role of outflows: Magnetized advection-dominated accretion journal October 2012
Efficient generation of jets from magnetically arrested accretion on a rapidly spinning black hole: Jets from magnetically arrested BH accretion journal November 2011
Hot Accretion Flows Around Black Holes journal August 2014
The Structure of Radiatively Inefficient Black Hole Accretion Flows journal March 2020
The Event Horizon General Relativistic Magnetohydrodynamic Code Comparison Project journal August 2019
DISCOVERY OF AN OUTFLOW FROM RADIO OBSERVATIONS OF THE TIDAL DISRUPTION EVENT ASASSN-14li journal March 2016
First M87 Event Horizon Telescope Results. V. Physical Origin of the Asymmetric Ring journal April 2019
Ab Initio Horizon-scale Simulations of Magnetically Arrested Accretion in Sagittarius A* Fed by Stellar Winds journal June 2020
First M87 Event Horizon Telescope Results. VIII. Magnetic Field Structure near The Event Horizon journal March 2021
Black Hole Flares: Ejection of Accreted Magnetic Flux through 3D Plasmoid-mediated Reconnection journal January 2022
First Sagittarius A* Event Horizon Telescope Results. V. Testing Astrophysical Models of the Galactic Center Black Hole journal May 2022
Bridging the Bondi and Event Horizon Scales: 3D GRMHD Simulations Reveal X-shaped Radio Galaxy Morphology journal August 2022
Formation of Magnetically Truncated Accretion Disks in 3D Radiation-transport Two-temperature GRMHD Simulations journal August 2022

Similar Records

Collapsar Gamma-Ray Bursts Grind Their Black Hole Spins to a Halt
Journal Article · Sun Jan 28 19:00:00 EST 2024 · The Astrophysical Journal · OSTI ID:2583020

WIND-DRIVEN ACCRETION IN PROTOPLANETARY DISKS. II. RADIAL DEPENDENCE AND GLOBAL PICTURE
Journal Article · Thu Aug 01 00:00:00 EDT 2013 · Astrophysical Journal · OSTI ID:22121822

Global MHD Simulations of Accretion Disks in Cataclysmic Variables (CVs). II. The Relative Importance of MRI and Spiral Shocks
Journal Article · Sat May 20 00:00:00 EDT 2017 · Astrophysical Journal · OSTI ID:22872703