387 citations · 559 across the 6 of their papers we have counts for
14 papers · 1 filter
Epicyclic Motions and Standing Shocks in Numerically Simulated Tilted Black-Hole Accretion Disks
P. Chris Fragile, Omer M. Blaes
This work presents a detailed analysis of the overall flow structure and unique features of the inner region of the tilted disk simulations described in Fragile et al. (2007). The…
Correlations Between Lag, Luminosity, and Duration in Gamma-ray Burst Pulses
Jon Hakkila, Timothy W. Giblin, Jay P. Norris +2
We derive a new peak lag vs. peak luminosity relation in gamma-ray burst (GRB) pulses. We demonstrate conclusively that GRB spectral lags are pulse rather than burst properties and…
Global General Relativistic MHD Simulation of a Tilted Black-Hole Accretion Disk
P. Chris Fragile, Omer M. Blaes, Peter Anninos +1
This paper presents a continuation of our efforts to numerically study accretion disks that are misaligned (tilted) with respect to the rotation axis of a Kerr black hole. Here we…
Numerical Modeling of the Radio Nebula from the 2004 December 27 Giant Flare of SGR 1806-20
Jay D. Salmonson, P. Chris Fragile, Peter Anninos
We use the relativistic hydrodynamics code Cosmos++ to model the evolution of the radio nebula triggered by the Dec. 27, 2004 giant flare event of soft gamma repeater 1806-20. We p…
Oscillation modes of relativistic slender tori
O. M. Blaes, P. Arras, P. C. Fragile
Accretion flows with pressure gradients permit the existence of standing waves which may be responsible for observed quasi-periodic oscillations (QPO's) in X-ray binaries. We prese…
Cosmos++: Relativistic Magnetohydrodynamics on Unstructured Grids with Local Adaptive Refinement
Peter Anninos, P. Chris Fragile, Jay D. Salmonson
A new code and methodology are introduced for solving the general relativistic magnetohydrodynamic (GRMHD) equations in fixed background spacetimes using time-explicit, finite-volu…