Extreme magnetic fields around black holes
arXiv:2407.15929 · doi:10.1007/978-3-031-90186-7_6
Abstract
Recent results of the event horizon-scale images of M87* and Sagittarius A* from the Event Horizon Telescope Collaboration show that strong magnetic fields are likely present around the central black holes (BHs) in these sources. Magnetically arrested disks (MADs), the end stage of magnetic flux saturation around BHs, are especially rich in horizon-scale physics due to the presence of powerful jets and magnetic flux eruptions that provide significant feedback on the accretion mechanism. Here, we present an overview of our current knowledge about the magnetic field evolution in numerical simulations of accreting BHs, focusing on jet launching, black hole-interstellar medium feedback, and black hole imaging of MADs. We find that misaligned MAD accretion flows seemingly exhibit jet ejection cycles that could produce flaring states in radio-quiet active galactic nuclei. Further, we show that advances in horizon-scale interferometric telescopes could identify disk misalignment by imaging the disk-jet connection region.
Accepted proceedings paper of International Symposium on Recent Development in Relativistic Astrophysics (ISRA 2023)
References in corpus (40)
- First M87 Event Horizon Telescope Results. I. The Shadow of the Supermassive Black Hole
- Efficient Generation of Jets from Magnetically Arrested Accretion on a Rapidly Spinning Black Hole
- Magnetically Arrested Disk: An Energetically Efficient Accretion Flow
- Nonthermal Electrons in Radiatively Inefficient Accretion Flow Models of Sagittarius A*
- First M87 Event Horizon Telescope Results. VIII. Magnetic Field Structure near The Event Horizon
- Rapid X-ray flaring from the direction of the supermassive black hole at the Galactic Centre
- First Sagittarius A* Event Horizon Telescope Results. V. Testing Astrophysical Models of the Galactic Center Black Hole
- Three-dimensional MHD Simulations of Radiatively Inefficient Accretion Flows
- GRMHD Simulations of Magnetized Advection Dominated Accretion on a Non-Spinning Black Hole: Role of Outflows
- The Event Horizon General Relativistic Magnetohydrodynamic Code Comparison Project
- Black hole flares: ejection of accreted magnetic flux through 3D plasmoid-mediated reconnection
- Alignment of Magnetized Accretion Disks and Relativistic Jets with Spinning Black Holes
- The Nature of the 10 Kilosecond X-ray Flare in Sgr A*
- Large-Scale Poloidal Magnetic Field Dynamo Leads to Powerful Jets in GRMHD Simulations of Black Hole Accretion with Toroidal Field
- Chandra-HETGS Observations of the Brightest Flare Seen from Sgr A*
- Key Science Goals for the Next-Generation Event Horizon Telescope
- Ab Initio Horizon-Scale Simulations of Magnetically Arrested Accretion in Sagittarius A* Fed by Stellar Winds
- General Relativistic Modeling of Magnetized Jets from Accreting Black Holes
- Precessing jet nozzle connecting to a spinning black hole in M87
- H-AMR: A New GPU-accelerated GRMHD Code for Exascale Computing With 3D Adaptive Mesh Refinement and Local Adaptive Time-stepping
- Evaluation of New Submillimeter VLBI Sites for the Event Horizon Telescope
- Unprecedented variability of Sgr A* in NIR
- Observational signatures of disk and jet misalignment in images of accreting black holes
- Magnetic Hair and Reconnection in Black Hole Magnetospheres
- Spectra of Black Hole Accretion Models of Ultra-Luminous X-ray Sources
- Flux eruption events drive angular momentum transport in magnetically arrested accretion flows
- General relativistic MHD simulations of non-thermal flaring in Sagittarius A*
- Chandra Spectral and Timing Analysis of Sgr A*'s Brightest X-ray Flares
- Collisionless accretion onto black holes: dynamics and flares
- A Resolution Study of Magnetically Arrested Disks
- Plasma Diagnostics of the Interstellar Medium with Radio Astronomy
- Rapid Black Hole Spin-down by Thick Magnetically Arrested Disks
- Jet Formation in 3D GRMHD Simulations of Bondi-Hoyle-Lyttleton Accretion
- Modelling the polarised emission from black holes on event horizon-scales
- Particle acceleration by magnetic Rayleigh-Taylor instability: mechanism for flares in black-hole accretion flows
- Accretion Flow Morphology in Numerical Simulations of Black Holes from the ngEHT Model Library: The Impact of Radiation Physics
- Winds and Disk Turbulence Exert Equal Torques on Thick Magnetically Arrested Disks
- Relativistic Signatures of Flux Eruption Events Near Black Holes
- The Luminous, Hard State Can't Be MAD
- Resolution analysis of magnetically arrested disk simulations