Bulletin of the American Physical Society
2008 APS April Meeting and HEDP/HEDLA Meeting
Volume 53, Number 5
Friday–Tuesday, April 11–15, 2008; St. Louis, Missouri
Session W5: Computational Challenges in Astrophysics, Cosmology and Gravitation |
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Sponsoring Units: GGR DAP Chair: Pablo Laguna, Pennsylvania State University Room: Hyatt Regency St. Louis Riverfront (formerly Adam's Mark Hotel), Promenade C |
Tuesday, April 15, 2008 10:45AM - 11:21AM |
W5.00001: Neutron stars in binaries, status and a bright future Invited Speaker: Neutron stars in compact binaries not only are important sources of gravitational waves but are also thought responsible for powering fascinating phenomena. Simulations studying these systems have already revealed interesting dynamics even when all relevant physical processes could not be incorporated. This talk will provide a broad picture of what has so far been achieved, highlight particular examples and argue the (near) future promises to be quite exciting. [Preview Abstract] |
Tuesday, April 15, 2008 11:21AM - 11:57AM |
W5.00002: Computing Gravity's Strongest Grip Invited Speaker: Gravitational physics is entering a new era, one driven by observation, that will begin once gravitational wave interferometers such as LIGO make their first detections. The gravitational waves are produced during violent events such as the merger of two black holes. The detection of these waves or ripples in the fabric of spacetime is a formidable undertaking, requiring innovative engineering, powerful data analysis tools and careful theoretical modeling. In support of this theoretical modeling, recent breakthroughs in numerical relativity have lead to the development of computational tools that allow us to explore where and how gravitational wave observations can constrain or inform our understanding of gravity and astrophysical phenomena. I will review these latest developments, focusing on binary black hole simulations and the role these simulations play in our new understanding of physics and astronomy where gravity exhibits its strongest grip on our spacetime. [Preview Abstract] |
Tuesday, April 15, 2008 11:57AM - 12:33PM |
W5.00003: Computational Astrophysics at the Petascale: Towards Three-Dimensional Supernova Modeling Invited Speaker: The multi-scale and multi-physics character of many problems in astrophysics make them ideal candidates for investigation through large-scale simulations on modern supercomputers. Among the most computationally demanding of these problems is the explosion mechanism and phenomenology of core-collapse supernovae. The panoply of physical inputs, the time and length scales involved, and the necessity of performing simulations in three spatial dimensions makes supernova modeling among the most challenging subfields of computational science. I will review recent multi-dimensional simulations of these events and describe plans to perform petascale supernova simulations in three spatial dimensions incorporating all the requisite physical inputs known to be important today. [Preview Abstract] |
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