974 citations · 7k across the 48 of their papers we have counts for
48 papers
Tilt Dependence of Alignment in Accretion Disks Subjected to Lense--Thirring Torques
John F. Hawley, Julian H. Krolkik
We consider the effects of black hole tilt on accretion disk alignment, studying three initial black hole tilts,6 degrees, 12 degrees and 24 degrees, with both magnetohydrodynamic…
Sound Speed Dependence of Alignment in Accretion Disks Subjected to Lense-Thirring Torques
John F. Hawley, Julian H. Krolik
We present a series of simulations in both pure hydrodynamics (HD) and magnetohydrodynamics (MHD) exploring the degree to which alignment of disks subjected to external precessiona…
Disks and Jets - Gravity, Rotation and Magnetic Fields
John F. Hawley, Christian Fendt, Martin Hardcastle +2
Magnetic fields are fundamental to the dynamics of both accretion disks and the jets that they often drive. We review the basic physics of these phenomena, the past and current eff…
A Steady-State Alignment Front in an Accretion Disk Subjected to Lense-Thirring Torques
Julian H. Krolik, John F. Hawley
Using only physical mechanisms, i.e., 3D MHD with no phenomenological viscosity, we have simulated the dynamics of a moderately thin accretion disk subject to torques whose radial…
MHD Simulation of a Disk Subjected to Lense-Thirring Precession
Kareem A. Sorathia, Julian H. Krolik, John F. Hawley
When matter orbits around a central mass obliquely with respect to the mass's spin axis, the Lense-Thirring effect causes it to precess at a rate declining sharply with radius. Eve…
Testing Convergence for Global Accretion Disks
John F. Hawley, Sherwood A. Richers, Xiaoyue Guan +1
Global disk simulations provide a powerful tool for investigating accretion and the underlying magnetohydrodynamic turbulence driven by the magneto-rotational instability (MRI). Us…