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Evolution of binary black-hole spacetimes.
Early success is described in the evolution of binary black-hole spacetimes with a numerical code based on a generalization of harmonic coordinates capable of evolving binary systems for enough time to extract information about the orbit, merger, and gravitational waves emitted during the event.
Numerical relativity using a generalized harmonic decomposition
A new numerical scheme to solve the Einstein field equations based upon the generalized harmonic decomposition of the Ricci tensor is introduced and a variant of the cartoon method for efficiently simulating axisymmetric spacetimes with a Cartesian code is described.
Gravitational collapse in 2¿1 dimensional AdS spacetime
We present results of numerical simulations of the formation of black holes from the gravitational collapse of a massless, minimally coupled scalar field in 211 dimensional, axially symmetric,
Theoretical Physics Implications of the Binary Black-Hole Mergers GW150914 and GW151226
The gravitational wave observations GW150914 and GW151226 by Advanced LIGO provide the first opportunity to learn about physics in the extreme gravity environment of coalescing binary black holes.
Fundamental theoretical bias in gravitational wave astrophysics and the parametrized post-Einsteinian framework
We consider the concept of fundamental bias in gravitational wave astrophysics as the assumption that general relativity is the correct theory of gravity during the entire wave-generation and
Dynamical Chern-Simons modified gravity: Spinning black holes in the slow-rotation approximation
The low-energy limit of string theory contains an anomaly-canceling correction to the Einstein-Hilbert action, which defines an effective theory: Chern-Simons (CS) modified gravity. The CS correction
Inspiral, merger and ring-down of equal-mass black-hole binaries
We investigate the dynamics and gravitational-wave (GW) emission in the binary merger of equal-mass black holes as obtained from numerical relativity simulations. The simulations were performed with
Binary Black Hole Coalescence
The two-body problem in general relativity is reviewed, focusing on the final stages of the coalescence of the black holes as uncovered by recent successes in numerical solution of the field
Quasi-spherical light cones of the Kerr geometry
Quasi-spherical light cones are lightlike hypersurfaces of the Kerr geometry that are asymptotic to Minkowski light cones at infinity. We derive the equations of these surfaces and examine their
Simulation of binary black hole spacetimes with a harmonic evolution scheme
A numerical solution scheme for the Einstein field equations based on generalized harmonic coordinates is described, focusing on details which are not provided before in the literature and which are