3 citations · 5 across the 10 of their papers we have counts for
10 papers
pynucastro 3: A community library for nuclear astrophysics
Zhi Chen, Khanak Bhargava, Eric T. Johnson +8
We describe the latest release of pynucastro: a community python library for nuclear astrophysics. The goal of the pynucastro project is to build the tools needed to interactively…
AMReX-Astrophysics Microphysics: A set of microphysics routines for astrophysical simulation codes based on the AMReX library
Astro Microphysics Team, Khanak Bhargava, Abigail Bishop +15
The AMReX-Astrophysics Microphysics library provides a common set of microphysics routines (reaction networks and associated physics, equations of state, and various transport coef…
Multi-dimensional Models of Mixed H/He Flames in X-ray Bursts
Eric T. Johnson, Michael Zingale
We investigate the properties of mixed H/He flames in X-ray bursts using 2D hydrodynamic simulations. We find that as the initial hydrogen abundance of the atmosphere increases, th…
The Challenges of Modeling Astrophysical Reacting Flows
Michael Zingale, Khanak Bhargava, Ryan Brady +5
Stellar evolution is driven by the changing composition of a star from nuclear reactions. At the late stages of evolution and during explosive events, the timescale can be short an…
Strong Coupling of Hydrodynamics and Reactions in Nuclear Statistical Equilibrium for Modeling Convection in Massive Stars
Michael Zingale, Zhi Chen, Eric T. Johnson +2
We build on the simplified spectral deferred corrections (SDC) coupling of hydrodynamics and reactions to handle the case of nuclear statistical equilibrium (NSE) and electron/posi…
Simulating Lateral H/He Flame Propagation in Type I X-ray Bursts
Eric T. Johnson, Michael Zingale
X-ray bursts are the thermonuclear runaway of a mixed H/He layer on the surface of a neutron star. Observations suggest that the burning begins locally and spreads across the surfa…
A Fully Explicit Integrator for Modeling Astrophysical Reactive Flows
Parker Johnson, Michael Zingale, Eric T. Johnson +2
Simulating complex astrophysical reacting flows is computationally expensive -- reactions are stiff and typically require implicit integration methods. The reaction update is often…
A Framework for Exploring Nuclear Physics Sensitivity in Numerical Simulations
Zhi Chen, Eric T. Johnson, Max Katz +3
We describe the AMReX-Astrophysics framework for exploring the sensitivity of astrophysical simulations to the details of a nuclear reaction network, including the number of nuclei…
pynucastro 2.1: an update on the development of a python library for nuclear astrophysics
Alexander Smith Clark, Eric T. Johnson, Zhi Chen +5
pynucastro is a python library that provides visualization and analyze techniques to classify, construct, and evaluate nuclear reaction rates and networks. It provides tools that a…
Sensitivity of Simulations of Double Detonation Type Ia Supernova to Integration Methodology
Michael Zingale, Zhi Chen, Melissa Rasmussen +4
We study the coupling of hydrodynamics and reactions in simulations of the double detonation model for Type Ia supernovae. When assessing the convergence of simulations, the focus…