Astronomy and Astrophysics – Astrophysics – General Relativity and Quantum Cosmology
Scientific paper
2003-03-05
Phys.Rev.D68:024031,2003
Astronomy and Astrophysics
Astrophysics
General Relativity and Quantum Cosmology
Some additions and minor changes in presentation. Accepted for publication in PRD
Scientific paper
10.1103/PhysRevD.68.024031
We consider the problem of finding the gravitational radiation output, or news, within the context of a numerical simulation of a spacetime by means of the null-cone, or characteristic, approach to numerical relativity. We develop a method for computing the news that uses an explicit coordinate transformation to a coordinate system that satisfies the Bondi conditions. The method has been implemented computationally. We present results of applying the method to certain test problems, demonstrating second order convergence of the news to the analytic value.
Bishop Nigel T.
Deshingkar Shrirang S.
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