220 citations · 1.5k across the 60 of their papers we have counts for
15 papers · 1 filter
Observatory Science with eXTP
Ping Zhou, Jirong Mao, Liang Zhang +97
Scheduled for launch in 2030, the enhanced X-ray Timing and Polarization (eXTP) telescope is a Chinese space-based mission aimed at studying extreme conditions and phenomena in ast…
Well-Balanced Hydrodynamics for the Piecewise Parabolic Method with Characteristic Tracing
Michael Zingale
Well-balanced reconstruction techniques have been developed for stellar hydrodynamics to address the challenges of maintaining hydrostatic equilibrium during evolution. I show how…
pynucastro: A Python Library for Nuclear Astrophysics
Alexander Smith Clark, Eric T. Johnson, Zhi Chen +6
We describe pynucastro 2.0, an open source library for interactively creating and exploring astrophysical nuclear reaction networks. We demonstrate new methods for approximating ra…
An Improved Method for Coupling Hydrodynamics with Astrophysical Reaction Networks
M. Zingale, M. P. Katz, A. Nonaka +1
Reacting astrophysical flows can be challenging to model because of the difficulty in accurately coupling hydrodynamics and reactions. This can be particularly acute during explosi…
Practical Effects of Integrating Temperature with Strang Split Reactions
M. Zingale, M. P. Katz, D. E. Willcox +1
For astrophysical reacting flows, operator splitting is commonly used to couple hydrodynamics and reactions. Each process operates independent of one another, but by staggering the…
Preparing Nuclear Astrophysics for Exascale
Max P. Katz, Ann Almgren, Maria Barrios Sazo +7
Astrophysical explosions such as supernovae are fascinating events that require sophisticated algorithms and substantial computational power to model. Castro and MAESTROeX are nucl…
The Castro AMR Simulation Code: Current and Future Developments
M. Zingale, A. S. Almgren, M. Barrios Sazo +7
We describe recent developments to the Castro astrophysics simulation code, focusing on new features that enable our simulations of X-ray bursts. Two highlights of Castro's ongoing…
pyro: a framework for hydrodynamics explorations and prototyping
Alice Harpole, Michael Zingale, Ian Hawke +1
pyro is a Python-based simulation framework designed for ease of implementation and exploration of hydrodynamics methods. It is built in a object-oriented fashion, allowing for the…
pynucastro: an interface to nuclear reaction rates and code generator for reaction network equations
Donald E. Willcox, Michael Zingale
pynucastro addresses two needs in the field of nuclear astrophysics: visual exploration of nuclear reaction rates or networks and automated code generation for integrating reaction…
Meeting the Challenges of Modeling Astrophysical Thermonuclear Explosions: Castro, Maestro, and the AMReX Astrophysics Suite
M. Zingale, A. S. Almgren, M. G. Barrios Sazo +9
We describe the AMReX suite of astrophysics codes and their application to modeling problems in stellar astrophysics. Maestro is tuned to efficiently model subsonic convective flow…
Modeling Astrophysical Explosions with Sustained Exascale Computing
M. Zingale, A. C. Calder, C. M. Malone +1
Our understanding of stars and their fates is based on coupling observations to theoretical models. Unlike laboratory physicists, we cannot perform experiments on stars, but rather…
On the Piecewise Parabolic Method for Compressible Flow with Stellar Equations of State
M. Zingale, M. P. Katz
The piecewise parabolic method and related schemes are widely used to model stellar flows. Several different methods for extending the validity of these methods to a general equati…
pyro: A teaching code for computational astrophysical hydrodynamics
Michael Zingale
We describe pyro: a simple, freely-available code to aid students in learning the computational hydrodynamics methods widely used in astrophysics. pyro is written with simplicity a…
MAESTRO, CASTRO, and SEDONA -- Petascale Codes for Astrophysical Applications
A. Almgren, J. Bell, D. Kasen +6
Performing high-resolution, high-fidelity, three-dimensional simulations of Type Ia supernovae (SNe Ia) requires not only algorithms that accurately represent the correct physics,…
MAESTRO: An Adaptive Low Mach Number Hydrodynamics Algorithm for Stellar Flows
A. Nonaka, A. S. Almgren, J. B. Bell +3
Many astrophysical phenomena are highly subsonic, requiring specialized numerical methods suitable for long-time integration. In a series of earlier papers we described the develop…