2.1k citations · 5k across the 47 of their papers we have counts for
5 papers · 1 filter
The fate of fallback matter around newly born compact objects
Rosalba Perna, Paul Duffell, Matteo Cantiello +1
The presence of fallback disks around young neutron stars has been invoked over the years to explain a large variety of phenomena. Here we perform a numerical investigation of the…
Binary Black Hole Accretion From a Circumbinary Disk: Gas Dynamics Inside the Central Cavity
Brian D. Farris, Paul Duffell, Andrew I. MacFadyen +1
We present the results of 2D hydrodynamical simulations of circumbinary disk accretion using the finite-volume code DISCO. This code solves the 2D viscous Navier-Stokes equations o…
A "Boosted Fireball" Model for Structured Relativistic Jets
Paul C. Duffell, Andrew I. MacFadyen
We present a model for relativistic jets which generates a particular angular distribution of Lorentz factor and energy per solid angle. We consider a fireball with specific intern…
Rayleigh-Taylor Instability in a Relativistic Fireball on a Moving Computational Grid
Paul C. Duffell, Andrew I. MacFadyen
We numerically calculate the growth and saturation of the Rayleigh-Taylor instability caused by the deceleration of relativistic outflows with Lorentz factor Γ = 10, 30, and 100. T…
Gap Opening by Extremely Low Mass Planets in a Viscous Disk
Paul C. Duffell, Andrew I MacFadyen
By numerically integrating the compressible Navier-Stokes equations in two dimensions, we calculate the criterion for gap formation by a very low mass (q ~10^{-4}) protoplanet on a…