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Foil 11 Why Study General Relativity Numerically

From Master Foilset of Numerical Formulation and Solution of Collision 0f two Black Holes CPSP713 Case studies in Computational Science -- Spring Semester 1996. by Geoffrey C. Fox * See also color IMAGE
Newtonian gravity is linear (weak field) limit of General Relativity
Tests of General Relativity --
  • Small deviations from Newton's laws in planetary orbits
  • Energy loss in Binary Neutron Stars from Gravitational wave radiation
  • Bending of light in strong gravitational fields
New experiments will directly observe gravitational waves due to interactions with sensitive detectors on earth
  • LIGO in Louisiana and Washington State(Hanford)
  • VIRGO in Europe
Can estimate that Computations of Gravitational Waves from black hole collision would take 100,000 hours on a Cray-YMP
  • 10 Hours on a Teraflop Machine
Estimate that LIGO will sensitivity to detect black hole gravitational waves around the year 2005

Northeast Parallel Architectures Center, Syracuse University, npac@npac.syr.edu

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