Magnetically arrested disk flux eruption events to describe SgrA* flares
arXiv:2501.07521 · doi:10.1051/0004-6361/202453456
Abstract
Context. Magnetically arrested disks are among the most suitable candidates for describing the gas accretion and observed emission in the vicinity of supermassive black holes. Aims. This work aims to provide a direct correlation between the quasi-periodic flux eruption events, characteristic of MAD accretion disk simulations, and the observed flaring behavior in the Galactic center. Methods. We employ a MAD accretion disk with a distinct counter-clockwise rotation and investigate the evolution of magnetized flux tubes generated during a prominent flux eruption event. Although these flux tubes demonstrate a clockwise pattern, they experience significant dragging by the accretion disk's rotation. This study models the motion of hot spots, formed on the disk's equatorial plane due to magnetic reconnection, as they travel along the magnetized flux tubes at a fraction of the speed of light. Results. Hot spots with a relativistic ejection velocity are able to balance out the counter-clockwise dragging of the flux tube's foot-point on the disk and demonstrate a clockwise motion in the sky, that is in good agreement with the NIR flares in the Galactic center. In addition, our flare models favor face-on inclinations in the range and for SgrA*. Conclusions. The flux eruption events that arise naturally in the MAD accretion state provide a promising framework for reproducing the observed flaring behavior in the vicinity of SgrA*.
arXiv comment9 pages, 7 figures, 1 table, accepted for publication in A&A
References in corpus (49)
- First M87 Event Horizon Telescope Results. V. Physical Origin of the Asymmetric Ring
- Efficient Generation of Jets from Magnetically Arrested Accretion on a Rapidly Spinning Black Hole
- Magnetically Arrested Disk: An Energetically Efficient Accretion Flow
- Instability of current sheets and formation of plasmoid chains
- Near-infrared flares from accreting gas around the supermassive black hole at the Galactic Centre
- Rapid X-ray flaring from the direction of the supermassive black hole at the Galactic Centre
- A Measurement of the Electromagnetic Luminosity of a Kerr Black Hole
- 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
- Detection of orbital motions near the last stable circular orbit of the massive black hole SgrA*
- Fast magnetic reconnection in the plasmoid-dominated regime
- Dissecting X-ray-emitting Gas around the Center of our Galaxy
- An Unambiguous Detection of Faraday Rotation in Sagittarius A*
- Variable Infrared Emission from the Supermassive Black Hole at the Center of the Milky Way
- The Black Hole Accretion Code
- Black hole flares: ejection of accreted magnetic flux through 3D plasmoid-mediated reconnection
- Magnetic reconnection and stochastic plasmoid chains in high-Lundquist-number plasmas
- Magnetically Arrested Disks and Origin of Poynting Jets: Numerical Study
- Radiative Processes in High Energy Astrophysics
- Relativistic magnetic reconnection in pair plasmas and its astrophysical applications
- A Magnetohydrodynamic Model for the Formation of Episodic Jets
- Flares in the Galactic center I: orbiting flux tubes in Magnetically Arrested Black Hole Accretion Disks
- Modeling the orbital motion of Sgr A*'s near-infrared flares
- Constrained transport and adaptive mesh refinement in the Black Hole Accretion Code
- Sgr A* near-infrared flares from reconnection events in a magnetically arrested disc
- Plasmoid formation in global GRMHD simulations and AGN flares
- A Statistical Model of Magnetic Islands in a Large Current Layer
- Stellar transits across a magnetized accretion torus as a mechanism for plasmoid ejection
- On the Distribution of Plasmoids In High-Lundquist-Number Magnetic Reconnection
- Polarimetry and Astrometry of NIR Flares as Event Horizon Scale, Dynamical Probes for the Mass of Sgr A*
- State-of-the-art energetic and morphological modelling of the launching site of the M87 jet
- Variable Linear Polarization from Sagittarius A*: Evidence for a Hot Turbulent Accretion Flow
- Polarized Synchrotron Emissivities and Absorptivities for Relativistic Thermal, Power-Law, and Kappa Distribution Functions
- The Surprisingly Small Impact of Magnetic Fields On The Inner Accretion Flow of Sagittarius A* Fueled By Stellar Winds
- Dynamically important magnetic fields near the event horizon of Sgr A*
- General relativistic MHD simulations of non-thermal flaring in Sagittarius A*
- Evolution of the Relativistic Plasmoid-Chain in the Poynting-Dominated Plasma
- Effect of Electromagnetic Interaction on Galactic Center Flare Components
- The Jet-Disk Boundary Layer in Black Hole Accretion
- The origin of hotspots around Sgr A*: Orbital or pattern motion?
- Polarimetric signatures of hot spots in black hole accretion flows
- Magnetic reconnection plasmoid model for Sagittarius A* flares
- A Case for a Binary Black Hole System Revealed via Quasi-Periodic Outflows
- Fitting the light curves of Sagittarius A* with a hot-spot model
- A "coronal-mass-ejection'' model for flares in Sagittarius A*
- Accretion of Low Angular Momentum Material onto Black Holes: Radiation Properties of Axisymmetric MHD Flows
- Magnetic field structure in the vicinity of a super-massive black hole in low luminosity galaxies: the case of Sgr A*
- Parameter study for hot spot trajectories around Sgr
- The magnetic Rayleigh-Taylor instability around astrophysical black holes
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- Deep learning inference with the Event Horizon Telescope III. Zingularity results from the 2017 observations and predictions for future array expansions
- Non-thermal Synchrotron Emission and Polarization Signatures during Black Hole Flux Eruptions
- Radiative Cooling Effects on Plasmoid Formation in Black Hole Accretion Flows with Multiple Magnetic Loops
- The azimuthal structure of magnetically arrested disks during flux eruption events