The Einstein@Home search for periodic gravitational waves in LIGO S4 data (2009)
Abbott, B., Abbott, R., Adhikari, R., Ajith, P., Allen, Bruce, Allen, Gabrielle, ...
A search for periodic gravitational waves, from sources such as isolated rapidly-spinning neutron stars, was carried out using 510 hours of data from the fourth LIGO science run (S4). The search was...
The Einstein@Home search for periodic gravitational waves in early S5 LIGO data (2009)
Abbott, B., Abbott, R., Adhikari, R., Ajith, P., Allen, Bruce, Allen, Gabrielle, ...
This paper reports on an all-sky search for periodic gravitational waves from sources such as deformed isolated rapidly spinning neutron stars. The analysis uses 840 hours of data from 66 days of the...
Efficient Techniques for Distributed Computing (2008)
Thomas Dramlitsch, Gabrielle Allen, Edward Seidel
Abstract- We discuss a set of novel techniques we are de-veloping, which build on standard tools, to make distributed computing for large-scale simulations across multiple ma-chines (even scattered...
Gabrielle Allen, David Angulo, Ian Foster, Gerd Lanfermann, Chuang Liu, Thomas Radke, ...
The ability to harness heterogeneous, dynamically available grid resources is attractive to typically resourcestarved computational scientists and engineers, as in principle it can increase, by...
Visualizing Katrina ~ Merging Computer Simulations with Observations (2008)
Werner Benger, Shalini Venkataraman, A Long, Gabrielle Allen, Stephen David Beck, Maciej Brodowicz, ...
Abstract. Hurricane Katrina has had a devastating impact on the US Gulf Coast, and her effects will be felt for many years. Forecasts of such events, coupled with timely response, can greatly reduce...
An Integrated Grid Portal for Managing Energy Resources (2008)
Promita Chakraborty, Gabrielle Allen, Adam Lewis, Ian Chang-yen, Zhou Lei, John Lewis, ...
The discovery and management of energy resources, especially at locations in the Gulf of Mexico, requires an economic but technically enhanced infrastructure. Research teams from Louisiana State...
Visualizing Katrina ~ Merging Computer Simulations with Observations (2008)
Shalini Venkataraman, Werner Benger, A Long, Chirag Dekate, Gabrielle Allen, Stephen David Beck
Abstract. Hurricane Katrina has had a devastating impact on the US Gulf Coast, and her effects will be felt for many years. Forecasts of such events, coupled with timely response, can greatly reduce...
A Generic Task-Farming Framework for Reservoir Analysis in a Grid Environment (2008)
Santiago Pena, Dayong Huang, Zhou Lei, Gabrielle Allen, Xin Li, Chris D. White
The vast majority of research projects involving Grid Computing have focused on the development and standardization of the middleware that allows Grids to function. Despite the maturity of the...
Rion Dooley, Kent Milfeld, Chona Guiang, Sudhakar Pamidighantam, Gabrielle Allen
Abstract. The Computational Chemistry Grid (CCG) is a 3-year, National Middleware Initiative (NMI) program to develop cyberinfrastructure for the chemistry community. CCG is led by the University of...
Gabrielle Allen, Kelly Davis, Tom Goodale, Andrei Hutanu, Hartmut Kaiser, Thilo Kielmann, ...
Abstract — Core grid technologies are rapidly maturing, but there remains a shortage of real grid applications. One important reason is the lack of a simple and high-level application programming...
A Day in the Life of a Grid-Enabled Application: Counting on the Grid (2008)
Gabrielle Allen, Tom Goodale, Hartmut Kaiser, Thilo Kielmann, Archit Kulshrestha, André Merzky, ...
While Grid technologies are maturing rapidly, there still remains a shortage of real Grid applications. One important reason is the lack of simple and high-level application programming interfaces to...
Cactus Framework: Black Holes to Gamma Ray Bursts (2008)
Schnetter, Erik, Ott, Christian D., Allen, Gabrielle, Diener, Peter, Goodale, Tom, Radke, Thomas, ...
Gamma Ray Bursts (GRBs) are intense narrowly-beamed flashes of gamma-rays of cosmological origin. They are among the most scientifically interesting astrophysical systems, and the riddle concerning...
Astrophysically triggered searches for gravitational waves: status and prospects (2008)
Abbott, B., Abbott, R., Adhikari, R., Ajith, P., Allen, Bruce, Allen, Gabrielle, ...
In gravitational-wave detection, special emphasis is put onto searches that focus on cosmic events detected by other types of astrophysical observatories. The astrophysical triggers, e. g. from...
Beating the spin-down limit on gravitational wave emission from the Crab pulsar (2008)
Abbott, B., Abbott, R., Adhikari, R., Ajith, P., Allen, Bruce, Allen, Gabrielle, ...
We present direct upper limits on gravitational wave emission from the Crab pulsar using data from the first 9 months of the fifth science run of the Laser Interferometer Gravitational-wave...
Search for Gravitational-Wave Bursts from Soft Gamma Repeaters (2008)
Abbott, B., Abbott, R., Adhikari, R., Ajith, P., Allen, Bruce, Allen, Gabrielle, ...
We present a LIGO search for short-duration gravitational waves (GWs) associated with soft gamma ray repeater (SGR) bursts. This is the first search sensitive to neutron star f modes, usually...
First joint search for gravitational-wave bursts in LIGO and GEO 600 data (2008)
Abbott, B., Abbott, R., Adhikari, R., Ajith, P., Allen, Bruce, Allen, Gabrielle, ...
We present the results of the first joint search for gravitational-wave bursts by the LIGO and GEO 600 detectors. We search for bursts with characteristic central frequencies in the band 768-2048 Hz...
Gabrielle Allen, Thomas Dramlitsch, Ian Foster, Nicholas T. Karonis, Matei Ripeanu, ...
Improvements in the performance of processors and networks make it both feasible and interesting to treat collections of workstations, servers, clusters, and supercomputers as integrated...
Gabrielle Allen, Thomas Dramlitsch, Ian Foster, Nick Karonis, Matei Ripaneau, ...
Improvements in the performance of processors and networks mean that it is both feasible and interesting to treat collections of workstations, servers, clusters, and supercomputers as integrated...
Gabrielle Allen, Werner Benger, Thomas Dramlitsch, Tom Goodale, Hans-christian Hege, Gerd Lanfermann, ...
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Gabrielle Allen, Werner Benger, Thomas Dramlitsch, Tom Goodale, Hans-christian Hege, Gerd Lanfermann, ...
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Cactus Framework: Black Holes to Gamma Ray Bursts (2007)
Schnetter, Erik, Ott, Christian D., Allen, Gabrielle, Diener, Peter, Goodale, Tom, Radke, Thomas, ...
Gamma Ray Bursts (GRBs) are intense narrowly-beamed flashes of gamma-rays of cosmological origin. They are among the most scientifically interesting astrophysical systems, and the riddle concerning...
An Extensible Timing Infrastructure for Adaptive Large-scale Applications (2007)
Stark, Dylan, Allen, Gabrielle, Goodale, Tom, Radke, Thomas, Schnetter, Erik
Real-time access to accurate and reliable timing information is necessary to profile scientific applications, and crucial as simulations become increasingly complex, adaptive, and large-scale. The...
An Extensible Timing Infrastructure for Adaptive Large-scale Applications (2007)
Stark, Dylan, Allen, Gabrielle, Goodale, Tom, Radke, Thomas, Schnetter, Erik
Real-time access to accurate and reliable timing information is necessary to profile scientific applications, and crucial as simulations become increasingly complex, adaptive, and large-scale. The...
An Application Portal for Collaborative Coastal Modeling, Concurrency Computat.: Pract (2007)
Chongjie Zhang, Chirag Dekate, Gabrielle Allen, Ian Kelley, Jon Maclaren
We describe the background, architecture and implementation of a user portal for the SCOOP coastal ocean observing and modeling community. SCOOP is engaged in real time prediction of severe weather...
Allen, Gabrielle, Kokkotas, Kostas D.
We consider the perturbations of a relativistic star as an initial-value problem. Having discussed the formulation of the problem (the perturbation equations and the appropriate boundary conditions...
Integration of Trilinos Into The Cactus Code Framework (2006)
Josh Abadie, Faculty Advisor, Dr. Gabrielle Allen
Many of today’s pressing problems in science and engineering involve the solution of systems of partial differential equations on large scale computing systems. A number of frameworks and libraries...
Implementation of a Binary Tree Driver (OAKc) in Cactus (2006)
Jeff Dereus, Faculty Advisor, Dr. Gabrielle Allen
Cactus Code is an open source framework designed primarily for scientists and engineers, in which the core or “flesh ” acts as a central unit to which external modules or “thorns ” can...
Bondarescu,Mihail, Allen,Gabrielle, Daues,G., Kelley,Ian, Russell,Michael, Seidel,Edward, ...
We describe the Astrophysics Simulation Collaboratory (ASC) Portal, a collaborative environment in which distributed projects can perform research. The ASC project seeks to provide a web-based...
Bondarescu, Mihai, Allen, Gabrielle, Daues, Gregory, Kelley, Ian, Russell, Michael, Seidel, Edward, ...
We describe the Astrophysics Simulation Collaboratory (ASC) Portal, a collaborative environment in which distributed projects can perform research. The ASC project seeks to provide a web-based...
Allen, Gabrielle, Davis, Kelly C., Goodale, Tom, Hutanu, Andrei, Kaiser, Hartmut, Kielmann, Thilo, ...
C.: Shelter from the storm: Building a safe archive in a hostile world (2005)
Jon Maclaren, Gabrielle Allen, Chirag Dekate, Dayong Huang, Andrei Hutanu, Chongjie Zhang
Abstract. The storing of data and configuration files related to scientific experiments is vital if those experiments are to remain reproducible, or if the data is to be shared easily. The prescence...
Bondarescu, Mihai, Allen, Gabrielle, Daues, Gregory, Kelley, Ian, Russell, Michael, Seidel, Edward, ...
We describe the Astrophysics Simulation Collaboratory (ASC) Portal, a collaborative environment in which distributed projects can perform research. The ASC project seeks to provide a web-based...
Towards standard testbeds for numerical relativity (2004)
Alcubierre, Miguel, Allen, Gabrielle, Bona, Carles, Fiske, David, Goodale, Tom, Guzmán, F. Siddhartha, ...
In recent years, many different numerical evolution schemes for Einstein's equations have been proposed to address stability and accuracy problems that have plagued the numerical relativity community...
Toward standard testbeds for numerical relativity (2004)
Alcubierre,Miguel, Allen,Gabrielle, Bona,Carles, Fiske,David, Goodale,Tom, Guzman,F. Siddhartha, ...
In recent years, many different numerical evolution schemes for Einstein's equations have been proposed to address stability and accuracy problems that have plagued the numerical relativity community...
Toward standard testbeds for numerical relativity (2004)
Alcubierre, Miguel, Allen, Gabrielle, Bona, Carles, Fiske, David R., Goodale, Tom, Guzman, F. Siddhartha, ...
In recent years, many different numerical evolution schemes for Einstein's equations have been proposed to address stability and accuracy problems that have plagued the numerical relativity community...
Toward standard testbeds for numerical relativity (2003)
Alcubierre, Miguel, Allen, Gabrielle, Bona, Carles, Fiske, David, Goodale, Tom, Guzman, F. Siddharta, ...
In recent years, many different numerical evolution schemes for Einstein's equations have been proposed to address stability and accuracy problems that have plagued the numerical relativity community...
Bondarescu, Ruxandra, Allen, Gabrielle, Daues, Gregory, Kelly, Ian, Russell, Michael, Seidel, Edward, ...
We describe the motivation, architecture, and implementation of the Astrophysics Simulation Collaboratory (ASC) portal. The ASC project provides a web-based problem solving framework for the...
Classifying and enabling Grid Applications (2003)
Allen,Gabrielle, Goodale,Tom, Russel,M., Seidel,Edward, Shalf,J.
Classifying and enabling Grid Applications (2003)
Allen,Gabrielle, Goodale,Tom, Russell,Michael, Seidel,Edward, Shalf,John
The Cactus Framework and Toolkit: Design and Applications (2003)
Goodale,Tom, Allen,Gabrielle, Lanfermann,Gerd, Massó,J., Radke,Thomas, Seidel,Edward, ...
Enabling Applications on the Grid: A Gridlaw overview (2003)
Allen,Gabrielle, Davis,Kelly, Dolkas,K. N., Doulamis,N. D., Goodale,Tom, Kielmann,T., ...
Classifying and enabling Grid Applications (2003)
Allen, Gabrielle, Goodale, Tom, Russell, Michael, Seidel, Edward, Shalf, John
The Cactus Framework and Toolkit: Design and Applications (2003)
Goodale, Tom, Allen, Gabrielle, Lanfermann, Gerd, Masso, Joan, Radke, Thomas, Seidel, Edward, ...
Enabling Applications on the Grid: A Gridlaw overview (2003)
Allen, Gabrielle, Davis, Kelly C., Dolkas, K. N., Doulamis, N. D., Goodale, Tom, Kielmann, T., ...
Enabling Applications on the Grid: A GridLab Overview (2003)
Gabrielle Allen, Kelly Davis, Konstantinos N. Dolkas, Nikolaos D. Doulamis, Tom Goodale, Thilo Kielmann, ...
www.gridlab.org Grid technology is widely emerging. Still, there is an eminent shortage of real Grid users, due to the absence of two important catalysts: first, a widely accepted vision on how...
The cactus framework and toolkit: Design and applications (2003)
Tom Goodale, Gabrielle Allen, Gerd Lanfermann, Joan Massó, Edward Seidel, John Shalf
Abstract. We describe Cactus, a framework for building a variety of computing applications in science and engineering, including astrophysics, relativity and chemical engineering. We first motivate...
Community software development with the astrophysics simulation collaboratory (2002)
Von Laszewski,G., Russell,Michael, Foster,Ian, Shalf,John, Allen,Gabrielle, Daues,G., ...
We describe a Grid-based collaboratory that supports the collaborative development and use of advanced simulation codes. Our implementation of this collaboratory uses a mix of Web technologies (for...
Cactus Grid Computing: Review of Current Development (2002)
Allen,Gabrielle, Benger,Werner, Dramlitsch,Thomas, Goodale,Tom, Hege,Hans-Christian, Lanfermann,Gerd, ...
Cactus is an open source problem solving environment designed for scientists and engineers. Its modular structure facilitates parallel computation across different architectures and collaborative...
Nomadic Migration: Fault Tolerance in a disruptive Grid Environment (2002)
Lanfermann,Gerd, Allen,Gabrielle, Radke,Thomas, Seidel,Edward
Gridlab - a grid application toolkid and testbed (2002)
Seidel,Edward, Allen,Gabrielle, Merzky,André, Nabrzyski,Jarek
In this paper we present the new project called GridLab which is funded by the European Commission under the Fifth Framework Programme. The GridLab project, made up of computer scientists,...
Cactus Grid Computing: Review of Current Development (2002)
Allen, Gabrielle, Benger, Werner, Dramlitsch, Thomas, Goodale, Tom, Hege, Hans-Christian, Lanfermann, Gerd, ...
Cactus is an open source problem solving environment designed for scientists and engineers. Its modular structure facilitates parallel computation across different architectures and collaborative...
Nomadic Migration: Fault Tolerance in a disruptive Grid Environment (2002)
Lanfermann, Gerd, Allen, Gabrielle, Radke, Thomas, Seidel, Edward
Gridlab - a grid application toolkid and testbed (2002)
Seidel, Edward, Allen, Gabrielle, Merzky, Andre, Nabrzyski, Jarek
In this paper we present the new project called GridLab which is funded by the European Commission under the Fifth Framework Programme. The GridLab project, made up of computer scientists,...
Community software development with the astrophysics simulation collaboratory (2002)
Von Laszewski, G., Russell, Michael, Foster, Ian, Shalf, John, Allen, Gabrielle, Daues, Gregory, ...
We describe a Grid-based collaboratory that supports the collaborative development and use of advanced simulation codes. Our implementation of this collaboratory uses a mix of Web technologies (for...
Gabrielle Allen, Tom Goodale, Michael Russell, Edward Seidel, John Shalf
Todays applications need the functionality of the Grid to break free of single resource limitations, and in turn, the Grid needs applications in order to properly evolve. Why then are there currently...
GridLab: Enabling Applications on the Grid (2002)
Gabrielle Allen, Dave Angulo, Tom Goodale, Thilo Kielmann, André Merzky, Jarek Nabrzysky, ...
www.GridLab.org Abstract. Grid technology is widely emerging. Still, there is an eminent shortage of real Grid users, due to the absence of two important catalysts: First, a widely accepted vision on...
Allen, Gabrielle, Angulo, David, Foster, Ian, Lanfermann, Gerd, Liu, Chuang, Radke, Thomas, ...
The ability to harness heterogeneous, dynamically available "Grid" resources is attractive to typically resource-starved computational scientists and engineers, as in principle it can increase, by...
Cactus Tools for Grid Applications (2001)
Allen,Gabrielle, Benger,Werner, Dramlitsch,Thomas, Goodale,Tom, Hege,Hans-Christian, Lanfermann,Gerd, ...
Cactus is an open source problem solving environment designed for scientists and engineers. Its modular structure facilitates parallel computation across different architectures and collaborative...
Early Experiences with the EGrid Testbed (2001)
Allen,Gabrielle, Dramlitsch,Thomas, Goodale,Tom, Lanfermann,Gerd, Radke,Thomas, Seidel,Edward, ...
The Testbed and Applications working group of the European Grid Forum (EGrid) is actively building and experimenting with a grid infrastructure connecting several research-based supercomputing sites...
Allen,Gabrielle, Angulo,David, Foster,Ian, Lanfermann,Gerd, Liu,Chuang, Radke,Thomas, ...
The ability to harness heterogeneous, dynamically available grid resources, is attractive to typically resource-starved computational scientists and engineers, as in principle it can increase, by...
Cactus Tools for Grid Applications (2001)
Allen, Gabrielle, Benger, Werner, Dramlitsch, Thomas, Goodale, Tom, Hege, Hans-Christian, Lanfermann, Gerd, ...
Cactus is an open source problem solving environment designed for scientists and engineers. Its modular structure facilitates parallel computation across different architectures and collaborative...
Early Experiences with the EGrid Testbed (2001)
Allen, Gabrielle, Dramlitsch, Thomas, Goodale, Tom, Lanfermann, Gerd, Radke, Thomas, Seidel, Edward, ...
The Testbed and Applications working group of the European Grid Forum (EGrid) is actively building and experimenting with a grid infrastructure connecting several research-based supercomputing sites...
Allen, Gabrielle, Dramlitsch, Thomas, Foster, Ian, Karonis, Nicolas T., Ripeanu, Matei, Seidel, Edward, ...
Improvements in the performance of processors and networks make it both feasible and interesting to treat collections of workstations, servers, clusters, and supercomputers as integrated...
Allen, Gabrielle, Angulo, David, Foster, Ian, Lanfermann, Gerd, Liu, Chuang, Radke, Thomas, ...
The ability to harness heterogeneous, dynamically available grid resources, is attractive to typically resource-starved computational scientists and engineers, as in principle it can increase, by...
Gabrielle Allen, David Angulo, Ian Foster, Gerd Lanfermann, Chuang Liu, Thomas Radke, ...
The ability to harness heterogeneous, dynamically available “Grid ” resources is attractive to typically resource-starved computational scientists and engineers, as in principle it can increase,...
Early experiences with the EGrid testbed (2001)
Gabrielle Allen, Thomas Dramlitsch, Tom Goodale, Gerd Lanfermann, Thomas Radke, Zoltan Balaton, ...
The Testbed and Applications working group of the European Grid Forum (EGrid) is actively building and experimenting with a grid infrastructure connecting several research-based supercomputing sites...
Early experiences with the EGrid testbed (2001)
Gabrielle Allen, Thomas Dramlitsch, Tom Goodale, Gerd Lanfermann, Thomas Radke, Thilo Kielmann, ...
The Testbed and Applications working group of the European Grid Forum (EGrid) is actively building and experimenting with a grid infrastructure connecting several research-based supercomputing sites...
Gabrielle Allen, Thomas Dramlitsch, Ian Foster, Nicholas T. Karonis, Matei Ripeanu, Edward Seidel, ...
Improvements in the performance of processors and networks make it both feasible and interesting to treat collections of workstations, servers, clusters, and supercomputers as integrated...
Early experiences with the EGrid testbed (2001)
Gabrielle Allen, Thomas Dramlitsch, Tom Goodale, Gerd Lanfermann, Thomas Radke, Zoltan Balaton, ...
The Testbed and Applications working group of the European Grid Forum (EGrid) is actively building and experimenting with a grid infrastructure connecting several research-based supercomputing sites...
Allen, Gabrielle, Dramlitsch, Thomas, Foster, Ian, Goodale, Tom, Karonis, Nicolas T., Ripeanu, Matei, ...
Gravitational collapse of gravitational waves in 3D numerical relativity. (2000)
Alcubierre, Miguel, Allen, Gabrielle, Brügmann, Bernd, Lanfermann, Gerd, Seidel, Edward, Suen, Wai-Mo, ...
We demonstrate that evolutions of three-dimensional, strongly non-linear gravitational waves can be followed in numerical relativity, hence allowing many interesting studies of both fundamental and...
Alcubierre, Miguel, Allen, Gabrielle, Brügmann, Bernd, Seidel, Edward, Suen, Wai-Mo
We study the stability properties of the standard ADM formulation of the 3+1 evolution equations of general relativity through linear perturbations of flat spacetime. We focus attention on modes with...
The Cactus Code: A Problem Solving Environment for the Grid (2000)
Gabrielle Allen, Werner Benger, Tom Goodale, Hans-christian Hege, Gerd Lanfermann, Thomas Radke, ...
Cactus is an open source problem solving environment designed for scientists and engineers. Its modular structure facilitates parallel computation across dierent architectures and collaborative code...
Alcubierre, Miguel, Allen, Gabrielle, Bruegmann, Bernd, Seidel, Edward, Suen, Wai-Mo
We study the stability properties of the standard ADM formulation of the 3+1 evolution equations of general relativity through linear perturbations of flat spacetime. We focus attention on modes with...
Gravitational Collapse of Gravitational Waves in 3D Numerical Relativity (1999)
Alcubierre, Miguel, Allen, Gabrielle, Bruegmann, Bernd, Lanfermann, Gerd, Seidel, Edward, Suen, Wai-Mo, ...
We demonstrate that evolutions of three-dimensional, strongly non-linear gravitational waves can be followed in numerical relativity, hence allowing many interesting studies of both fundamental and...
The close-limit approximation to neutron star collision (1999)
Allen,Gabrielle, Andersson,Nils, Kokkotas,Kostas D., Laguna,Pablo, Pullin,Jorge, Ruoff,Johannes
We develop a close-limit approximation to the head-on collision of two neutron stars similar to that used to treat the merger of black hole binaries. This approximation can serve as a useful...
Solving Einsteins Equations on Supercomputers (1999)
Allen,Gabrielle, Goodale,Tom, Lanfermann,Gerd, Radke,Thomas, Seidel,Edward, Benger,Werner, ...
In 1916, Albert Einstein published his famous general theory of relativity, which contains the rules of gravity and provides the basis for modern theories of astrophysics and cosmology. For many...
Evolutions of Stellar Oscillations (1999)
Allen,Gabrielle, Andersson,Nils, Kokkotas,Kostas D., Schutz,Bernard F.
Solving Einsteins Equations on Supercomputers (1999)
Allen, Gabrielle, Goodale, Tom, Lanfermann, Gerd, Radke, Thomas, Seidel, Edward, Benger, Werner, ...
In 1916, Albert Einstein published his famous general theory of relativity, which contains the rules of gravity and provides the basis for modern theories of astrophysics and cosmology. For many...
The close-limit approximation to neutron star collision (1999)
Allen, Gabrielle, Andersson, Nils, Kokkotas, Kostas D., Laguna, Pablo, Pullin, Jorge, Ruoff, Johannes
We develop a close-limit approximation to the head-on collision of two neutron stars similar to that used to treat the merger of black hole binaries. This approximation can serve as a useful...
Evolutions of Stellar Oscillations (1999)
Allen, Gabrielle, Andersson, Nils, Kokkotas, Kostas D., Schutz, Bernard F.
Solving Einstein's Equations on Supercomputers. (1999)
Allen, Gabrielle, Goodale, Tom, Lanfermann, Gerd, Radke, Thomas, Seidel, E., Benger, Werner, ...
The Cactus Code: A Problem Solving Environment for the Grid (1999)
Allen, Gabrielle, Benger, Werner, Goodale, Tom, Hege, Hans-Christian, Lanfermann, Gerd, Merzky, Andre, ...
The close-limit approximation to neutron star collisions. (1999)
Allen, Gabrielle, Andersson, Nils, Kokkotas, Kostas D., Laguna, Pablo, Pullin, Jorge, Ruoff, Johannes
We develop a close-limit approximation to the head-on collision of two neutron stars similar to that used to treat the merger of black hole binaries. This approximation can serve as a useful...
Allen,Gabrielle, Andersson,Nils, Kokkotas,Kostas D., Schutz,Bernard F.
We consider the perturbations of a relativistic star as an initial-value problem. Having discussed the formulation of the problem (the perturbation equations and the appropriate boundary conditions...
Black Hole Spectroscopy: Determining Waveforms from 3D Excited Black Holes (1998)
Allen, Gabrielle, Camarda, Karen, Seidel, Edward
We present the first results for Cauchy nonlinear evolution of 3D, nonaxisymmetric distorted black holes. We focus on the extraction and verification of 3D waveforms determined by numerical...
Evolution of Distorted Black Holes: A Perturbative Approach (1998)
Allen, Gabrielle, Camarda, Karen, Seidel, Edward
We consider a series of distorted black hole initial data sets, and develop techniques to evolve them using the linearized equations of motion for the gravitational wave perturbations on a...
Allen, Gabrielle, Andersson, Nils, Kokkotas, Kostas D., Schutz, Bernard F.
We consider the perturbations of a relativistic star as an initial-value problem. Having discussed the formulation of the problem (the perturbation equations and the appropriate boundary conditions...
Allen, Gabrielle, Andersson, Nils, Kokkotas, Kostas D., Schutz, Bernard F.
We consider the perturbations of a relativistic star as an initial-value problem. Having discussed the formulation of the problem (the perturbation equations and the appropriate boundary conditions...
Allen, Gabrielle, Andersson, Nils, Kokkotas, Kostas D., Schutz, Bernard F.
We consider the perturbations of a relativistic star as an initial-value problem. Having discussed the formulation of the problem (the perturbation equations and the appropriate boundary conditions...
Modelling Moving Black Holes (1996)
Alcubierre, Miguel, Allen, Gabrielle, Farrar, Simon, Schutz, Bernard F., Wild, Lee Ashton
The Cactus Code: A Problem Solving Environment for the Grid
Allen,Gabrielle, Goodale,Tom, Lanfermann,Gerd, Radke,Thomas, Seidel,Edward
Allen,Gabrielle, Dramlitsch,Thomas, Foster,Ian, Karonis,Nicolas T., Ripeanu,Matei, Seidel,Edward, ...
Improvements in the performance of processors and networks make it both feasible and interesting to treat collections of workstations, servers, clusters, and supercomputers as integrated...