Solving Einstein's Equations on Supercomputers: Colliding Black Holes, Neutron Stars, and Gravitational Waves

Ed Seidel, AEI, Potsdam

Increases in networking and computing technology are making fully nonlinear, 3D solutions to Einstein's equations of general relativity possible for the first time since they were written down. I will describe recent advances in numerical approaches to solving these equations, with simulations of black hole collisions, neutron star collisions, and nonlinear gravitational waves. I will also discuss metacomputing approaches to harnessing the largest available computing power, involving networked supercomnputers, to solve problems like these that are still too large for any single supercomputer. Videos of simulations will be shown.