273 citations · 2.1k across the 30 of their papers we have counts for
8 papers · 1 filter
Quantifying energetics and dissipation in magnetohydrodynamic turbulence
Greg Salvesen, Kris Beckwith, Jacob B. Simon +2
We perform a suite of two- and three-dimensional magnetohydrodynamic (MHD) simulations with the Athena code of the non-driven Kelvin-Helmholtz instability in the subsonic, weak mag…
Local Simulations of Instabilities in Relativistic Jets I: Morphology and Energetics of the Current-Driven Instability
Sean M. O'Neill, Kris Beckwith, Mitchell C. Begelman
We present the results of a numerical investigation of current-driven instability in magnetized jets. Utilizing the well-tested, relativistic magnetohydrodynamic code Athena, we co…
Recollimation Boundary Layers in Relativistic Jets
Susanna Kohler, Mitchell C. Begelman, Kris Beckwith
We study the collimation of relativistic hydrodynamic jets by the pressure of an ambient medium in the limit where the jet interior has lost causal contact with its surroundings. F…
Global Simulations of Accretion Disks I: Convergence and Comparisons with Local Models
Kareem A. Sorathia, Christopher S. Reynolds, James M. Stone +1
Grid-based magnetohydrodynamic (MHD) simulations have proven invaluable for the study of astrophysical accretion disks. However, the fact that angular momentum transport in disks i…
Turbulence in Global Simulations of Magnetized Thin Accretion Disks
Kris Beckwith, Philip J. Armitage, Jacob B. Simon
We use a global magnetohydrodynamic simulation of a geometrically thin accretion disk to investigate the locality and detailed structure of turbulence driven by the magnetorotation…
A Second Order Godunov Method for Multidimensional Relativistic Magnetohydrodynamics
Kris Beckwith, James M. Stone
We describe a new Godunov algorithm for relativistic magnetohydrodynamics (RMHD) that combines a simple, unsplit second order accurate integrator with the constrained transport (CT…