2005/01/31 by Maria Babiuc, Béla Szilágyi, Bela Szilagyi +2 · 1 citation
Physics and Astronomy · #Astrophysical Phenomena and Observations #Black Holes and Theoretical Physics #Black hole (networking) #Cauchy distribution #Convergence (economics) #Gravitational wave #Minkowski space #Null (SQL) #Numerical relativity #Pulsars and Gravitational Waves Research #Radiative transfer #Spacetime #gr-qc
paper · pdf · doi:10.1088/0264-9381/22/23/011
published as Class.Quant.Grav. 22 (2005) 5089-5108 · 11 pages, 5 figures; corrections after referee's comments; add section on Teukolsky wave
arxiv created 2005/09/27 · openalex publication_date 2005/11/18 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
We implement a code to find the gravitational news at future null infinity by using data from a Cauchy code as boundary data for a characteristic code. This technique of Cauchy–characteristic extraction (CCE) allows for the unambiguous extraction of gravitational waves from numerical simulations. We first test the technique on non-radiative spacetimes: Minkowski spacetime, perturbations of Minkowski spacetime and static black hole spacetimes in various gauges. We show the convergence and limitations of the algorithm and illustrate its success in cases where other wave extraction methods fail. We further apply our techniques to a standard radiative test case for wave extraction, a linearized Teukolsky wave, presenting our results in comparison to the Zerilli technique, and we argue for the advantages of our method of extraction.