Tilted massive black hole disks develop persistent m=1 nonaxisymmetric modes, launch Blandford-Znajek jets whose collimation depends on spin orientation, and emit gravitational waves in the first self-consistent GRMHD simulations of such systems.
Tilted Disks around Black Holes: A Numerical Parameter Survey for Spin and Inclination Angle
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abstract
We conduct a systematic study of the properties of tilted accretion flows around spinning black holes, covering a range of tilt angles and black hole spins, using the general-relativistic magnetohydrodynamics code Athena++. The same initial magnetized torus is evolved around black holes with spins ranging from 0 to 0.9, with inclinations ranging from 0 degrees to 24 degrees. The tilted disks quickly reach a warped and twisted shape that rigidly precesses about the black hole spin axis with deformations in shape large enough to hinder the application of linear bending wave theory. Magnetized polar outflows form, oriented along the disk rotation axes. At sufficiently high inclinations a pair of standing shocks develops in the disks. These shocks dramatically affect the flow at small radii, driving angular momentum transport. At high spins they redirect material more effectively than they heat it, reducing the dissipation rate relative to the mass accretion rate and lowering the radiative efficiency of the flow.
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Polarization signatures from GRMHD simulations of black hole accretion can help probe disk, corona, and jet properties when combined with X-ray polarimetry observations.
citing papers explorer
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Multimessenger Signatures of Tilted, Self-Gravitating, Black Hole Disks
Tilted massive black hole disks develop persistent m=1 nonaxisymmetric modes, launch Blandford-Znajek jets whose collimation depends on spin orientation, and emit gravitational waves in the first self-consistent GRMHD simulations of such systems.
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Polarization Signatures from GRMHD Simulations of Black Hole Accretion
Polarization signatures from GRMHD simulations of black hole accretion can help probe disk, corona, and jet properties when combined with X-ray polarimetry observations.