220 citations · 1k across the 14 of their papers we have counts for
14 papers
MHD simulations of jet acceleration from Keplerian accretion disks: the effects of disk resistivity
C. Zanni, A. Ferrari, R. Rosner +2
Accretion disks and astrophysical jets are used to model many active astrophysical objects, viz., young stars, relativistic stars, and active galactic nuclei. In this paper we pres…
Crushing of interstellar gas clouds in supernova remnants. I. The role of thermal conduction and radiative losses
S. Orlando, G. Peres, F. Reale +4
We model the hydrodynamic interaction of a shock wave of an evolved supernova remnant with a small interstellar gas cloud like the ones observed in the Cygnus loop and in the Vela…
Morphology of Rising Hydrodynamic and Magneto-hydrodynamic Bubbles from Numerical Simulations
K. Robinson, L. J. Dursi, P. M. Ricker +11
Recent Chandra and XMM-Newton observations of galaxy cluster cooling flows have revealed X-ray emission voids of up to 30 kpc in size that have been identified with buoyant, magnet…
On Heavy Element Enrichment in Classical Novae
A. Alexakis, A. C. Calder, A. Heger +10
Many classical nova ejecta are enriched in CNO and Ne. Rosner et al. recently suggested that the enrichment might originate in the resonant interaction between large-scale shear fl…
The Response of Model and Astrophysical Thermonuclear Flames to Curvature and Stretch
L. J. Dursi, M. Zingale, A. C. Calder +11
Critically understanding the `standard candle'-like behavior of Type Ia supernovae requires understanding their explosion mechanism. One family of models for Type Ia Supernovae beg…
Mapping Initial Hydrostatic Models in Godunov Codes
M. Zingale, L. J. Dursi, J. ZuHone +12
We look in detail at the process of mapping an astrophysical initial model from a stellar evolution code onto the computational grid of an explicit, Godunov type code while maintai…
Mixing by Non-linear Gravity Wave Breaking on a White Dwarf Surface
A. C. Calder, A. Alexakis, L. J. Dursi +7
We present the results of a simulation of a wind-driven non-linear gravity wave breaking on the surface of a white dwarf. The ``wind'' consists of H/He from an accreted envelope, a…
On Validating an Astrophysical Simulation Code
A. C. Calder, B. Fryxell, T. Plewa +15
We present a case study of validating an astrophysical simulation code. Our study focuses on validating FLASH, a parallel, adaptive-mesh hydrodynamics code for studying the compres…
On the C/O Enrichment of Novae Ejecta
R. Rosner, A. Alexakis, Y. Young +2
Using the results of recent work in shear instabilities in stratified fluids, we show that the resonant interaction between large-scale flows in the accreted H/He envelope of white…
On the miscible Rayleigh-Taylor instability: two and three dimensions
Y. Young, H. Tufo, A. Dubey +1
We investigate the miscible Rayleigh-Taylor (RT) instability in both 2 and 3 dimensions using direct numerical simulations, where the working fluid is assumed incompressible under…
Simulations of Astrophysical Fluid Instabilities
A. C. Calder, B. Fryxell, R. Rosner +7
We present direct numerical simulations of mixing at Rayleigh-Taylor unstable interfaces performed with the FLASH code, developed at the ASCI/Alliances Center for Astrophysical The…
Ballooning Instability in Polar Caps of Accreting Neutron Stars
C. Litwin, Edward F. Brown, R. Rosner
We assess the stability of Kruskal-Schwarzschild (magnetic Rayleigh-Taylor) type modes for accreted matter on the surface of a neutron star confined by a strong (>= 1.E12 G) magnet…
Large-Scale Simulations of Clusters of Galaxies
P. M. Ricker, A. C. Calder, L. J. Dursi +9
We discuss some of the computational challenges encountered in simulating the evolution of clusters of galaxies. Eulerian adaptive mesh refinement (AMR) techniques can successfully…
Evidence for topological nonequilibrium in magnetic configurations
S. I. Vainshtein, Z. Mikić, R. Rosner +1
We use direct numerical simulations to study the evolution, or relaxation, of magnetic configurations to an equilibrium state. We use the full single-fluid equations of motion for…