Computational Astrophysics: Gravitational waves, black holes and neutron stars
Falk Herwig
University of Victoria
Title: Large-scale simulations of stellar hydrodynamics and the challenge of collaborative and distributed analysis Abstract: The presently (internationally) available and emerging computing resources allow multi-physics simulations of complex astrophysics scenarios with unprecedented numerical resolution and realistic physics. The major challenge to take full advantage of emerging systems is the creation of software environments and data analysis platforms that address the evolving computational and data topologies. Dataset created by these simulations are too large to move for the purpose of ad-hoc analysis requirements. Analyzing and interpreting observational data faces similar challenges. Combined with the fact that research teams need to work distributed and asynchronously new cyber-infrastructures and platforms for remote data analysis and evaluation are needed. CANFAR is the Canadian Advanced Network For Astronomy Research and offers an evolving range of services to the astronomy community that have the goal address the requirements and needs of data- and computationally intensive research.
Prayush Kumar
LIGO
Title: Binary black hole simulations and Advanced LIGOAbstract: The pioneering observation of gravitational waves by Advanced LIGO has opened up a new spectrum for observing the universe. Confirmed by their first detection, colliding black holes are the primary target sources for gravitational-wave observations with Advanced LIGO. Detecting these sources needs accurate solutions of the equations of motion of General Relativity in their highly non-linear strong-field regime. This requires direct numerical solutions of the full Einstein equations. Using Numerical Relativity we can now compute the expected waveforms for black hole binaries of all masses and spins. This has been made possible by the presence of HPC infrastructure in Canada and across the globe. In this talk, I will discuss the role of Numerical Relativity in gravitational-wave astrophysics, highlighting the utility and vitality of HPC to the field.
Luis Lehner
Perimeter Institute
Luis Lehner, Perimeter Institute
Richard Shaw
University of British Columbia
Title: Computational Aspects of CHIMEAbstract:The Canadian Hydrogen Intensity Mapping Experiment (CHIME), is a new low-frequency radio interferometer designed to measure the accelerated expansion of the Universe, and probe the nature of Dark Energy. CHIME is made possible because of a convergence of cell phone technology, GPU computing and HPC. In this talk I will give a whistle stop tour of the computation and data processing for CHIME: from the 7 PetaOP/s GPU-based correlator; to how we use HPC to search hundreds of terabytes of data for a signal buried under 10^5 times more noise.
Robert Thacker
St. Mary's University
Title: Billions and billions: Computational galaxy formation grows up
Abstract
This special session involving some of Canada’s (and the world’s) top researchers in Astrophysics will share research their highlights in areas from gravitational waves and compact objects to computational astrophysics.... [ view full abstract ]
Authors
- Falk Herwig (University of Victoria)
- Prayush Kumar (LIGO)
- Luis Lehner (Perimeter Institute)
- Richard Shaw (University of British Columbia)
- Robert Thacker (St. Mary's University)
- Harald Pfeiffer (University of Toronto)
Topic Area
Advanced Research Computing (ARC): ARC applications in any discipline (i.e. the sciences,
Session
HPC1.1.3 » ARC: Astrophysics (13:15 - Monday, 20th June, CCIS 1-160, room sponsored by Obsidian)
Presentation Files
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