Numerical Relativity As A Tool For Computational Astrophysics
TLDR
Cactus as mentioned in this paper is a 3D multi-purpose parallel code for general relativistic astrophysics, which can be used to simulate colliding black holes and neutron stars, as well as accelerate the complete set of Einstein's equations for the first time.About:
This article is published in Journal of Computational and Applied Mathematics.The article was published on 1999-09-30 and is currently open access. It has received 30 citations till now. The article focuses on the topics: Numerical relativity & Theory of relativity.read more
Citations
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Journal ArticleDOI
Quasinormal modes: the characteristic `sound' of black holes and neutron stars
TL;DR: In this paper, the authors summarize how quasinormal modes are defined and computed, see why they have been regarded as closely analogous to normal modes, and discover why they are actually quite different.
Journal ArticleDOI
The Einstein Toolkit: A Community Computational Infrastructure for Relativistic Astrophysics
Frank Löffler,Joshua A. Faber,Eloisa Bentivegna,Tanja Bode,Peter Diener,Roland Haas,Roland Haas,Ian Hinder,Bruno C. Mundim,Christian D. Ott,Christian D. Ott,Christian D. Ott,Erik Schnetter,Erik Schnetter,Erik Schnetter,Gabrielle Allen,Gabrielle Allen,Manuela Campanelli,Pablo Laguna +18 more
TL;DR: The Einstein Toolkit as mentioned in this paper is a community-driven, freely accessible computational infrastructure intended for use in numerical relativity, relativistic astrophysics, and other applications, which combines a core set of components needed to simulate astrophysical objects such as black holes, compact objects, and collapsing stars.
Journal ArticleDOI
The Einstein Toolkit: A Community Computational Infrastructure for Relativistic Astrophysics
Frank Löffler,Joshua A. Faber,Eloisa Bentivegna,Tanja Bode,Peter Diener,Roland Haas,Roland Haas,Ian Hinder,Bruno C. Mundim,Christian D. Ott,Christian D. Ott,Christian D. Ott,Erik Schnetter,Erik Schnetter,Erik Schnetter,Gabrielle Allen,Gabrielle Allen,Manuela Campanelli,Pablo Laguna +18 more
TL;DR: The Einstein Toolkit as discussed by the authors is a community-driven, freely accessible computational infrastructure intended for use in numerical relativity, relativistic astrophysics, and other applications, which combines a core set of components needed to simulate astrophysical objects such as black holes, compact objects, and collapsing stars.
Proceedings ArticleDOI
Supporting Efficient Execution in Heterogeneous Distributed Computing Environments with Cactus and Globus
Gabrielle Allen,Thomas Dramlitsch,Ian Foster,Nicholas T. Karonis,Matei Ripeanu,Edward Seidel,Brian Toonen +6 more
TL;DR: An architecture and prototype implementation for a Grid-enabled computational framework based on Cactus, the MPICH-G2 Grid- enabled message-passing library, and a variety of specialized features to support e.cient execution in Grid environments is described.
Journal ArticleDOI
The Cactus Worm: Experiments with Dynamic Resource Discovery and Allocation in a Grid Environment
Gabrielle Allen,David Angulo,Ian Foster,Gerd Lanfermann,Chuang Liu,Thomas Radke,Edward Seidel,John Shalf +7 more
TL;DR: The authors describe the adaptive resource selection mechanisms and describe how they are used to achieve automatic application migration to “better” resources following performance degradation, and the results provide insights into the architectural structures required to support Adaptive resource selection.
References
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Journal ArticleDOI
Efficient implementation of essentially non-oscillatory shock-capturing schemes,II
Chi-Wang Shu,Stanley Osher +1 more
TL;DR: Two methods of sharpening contact discontinuities-the subcell resolution idea of Harten and the artificial compression idea of Yang, which those authors originally used in the cell average framework-are applied to the current ENO schemes using numerical fluxes and TVD Runge-Kutta time discretizations.
Book
Numerical methods for conservation laws
TL;DR: In this paper, the authors describe the derivation of conservation laws and apply them to linear systems, including the linear advection equation, the Euler equation, and the Riemann problem.