New approach to calculating the news

Nigel T. Bishop and Shrirang S. Deshingkar
Phys. Rev. D 68, 024031 – Published 30 July 2003
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Abstract

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.

  • Received 5 March 2003

DOI:https://doi.org/10.1103/PhysRevD.68.024031

©2003 American Physical Society

Authors & Affiliations

Nigel T. Bishop and Shrirang S. Deshingkar

  • Department of Mathematics, Applied Mathematics & Astronomy, University of South Africa, P.O. Box 392, Unisa 0003, South Africa

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Issue

Vol. 68, Iss. 2 — 15 July 2003

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