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General relativistic magnetohydrodynamic simulations of magnetically choked accretion flows around black holes
Black hole (BH) accretion flows and jets are qualitatively affected by the presence of ordered magnetic fields. We study fully three-dimensional global general relativistic magnetohydrodynamic (MHD)Expand
We describe a conservative, shock-capturing scheme for evolving the equations of general relativistic magnetohydrodynamics. Expand
Black Hole Spin Evolution
We consider a subset of the physical processes that determine the spin j ≡ a/M of astrophysical black holes. These include (1) Initial conditions. Recent models suggest that the collapse of aExpand
A measurement of the electromagnetic luminosity of a kerr black hole
Some active galactic nuclei, microquasars, and gamma-ray bursts may be powered by the electromagnetic braking of a rapidly rotating black hole. We investigate this possibility via axisymmetricExpand
Total and Jet Blandford-Znajek Power in the Presence of an Accretion Disk
Rotating black holes probably power ultrarelativistic jets in gamma-ray bursts, relativistic jets from some active galactic nuclei, and jets from some black hole X-ray binaries. Prior estimates ofExpand
General relativistic magnetohydrodynamic simulations of the jet formation and large-scale propagation from black hole accretion systems
The formation and large-scale propagation of Poynting-dominatedjets produced by accreting, rapidly rotating black hole systems are studied by numerically integrating the general relativisticExpand
Primitive Variable Solvers for Conservative General Relativistic Magnetohydrodynamics
Conservative numerical schemes for general relativistic magnetohydrodynamics (GRMHD) require a method for transforming between "conserved" variables such as momentum and energy density andExpand
Numerical simulations of super-critical black hole accretion flows in general relativity
A new general relativistic radiation magnetohydrodynamical code KORAL, is described, which employs the M1 scheme to close the radiation moment equations. The code has been successfully verifiedExpand
Simulations of ultrarelativistic magnetodynamic jets from gamma‐ray burst engines
Long-duration gamma-ray bursts (GRBs) require an engine capable of driving a jet of plasma to ultrarelativistic bulk Lorentz factors of up to several hundred and into narrow opening angles of a fewExpand
Stability of relativistic jets from rotating, accreting black holes via fully three-dimensional magnetohydrodynamic simulations
Rotating magnetized compact objects and their accretion discs can generate strong toroidal magnetic fields driving highly magnetized plasmas into relativistic jets. Of significant concern, however,Expand