Skip to search formSkip to main contentSkip to account menu

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)…
View PDF on arXiv (opens in a new tab)

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 a…
View on IOP Publishing (opens in a new tab)

HARM: A Numerical Scheme for General Relativistic Magnetohydrodynamics

We describe a conservative, shock-capturing scheme for evolving the equations of general relativistic magnetohydrodynamics. The fluxes are calculated using the Harten, Lax, & van Leer scheme. A…
View on IOP Publishing (opens in a new tab)

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 relativistic…
View PDF on arXiv (opens in a new tab)

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 of…
View on IOP Publishing (opens in a new tab)

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 axisymmetric…
View on IOP Publishing (opens in a new tab)

BLACK HOLE SPIN AND THE RADIO LOUD/QUIET DICHOTOMY OF ACTIVE GALACTIC NUCLEI

Radio loud active galactic nuclei (AGNs) are on average 1000 times brighter in the radio band compared to radio quiet AGNs. We investigate whether this radio loud/quiet dichotomy can be due to…
View on IOP Publishing (opens in a new tab)

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 verified…
View PDF on arXiv (opens in a new tab)

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 and…
View on IOP Publishing (opens in a new tab)

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 few…
View PDF on arXiv (opens in a new tab)
...
By clicking accept or continuing to use the site, you agree to the terms outlined in our Privacy Policy (opens in a new tab), Terms of Service (opens in a new tab), and Dataset License (opens in a new tab)