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Towards a novel wave-extraction method for numerical relativity

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Towards a novel wave-extraction method for numerical relativity. / Nerozzi, A.; Bruni, Marco; Burko, L.; Re, V.

2006. 702-707 Paper presented at Albert Einstein Century International Conference, Paris, France.

Research output: Contribution to conferencePaperpeer-review

Harvard

Nerozzi, A, Bruni, M, Burko, L & Re, V 2006, 'Towards a novel wave-extraction method for numerical relativity', Paper presented at Albert Einstein Century International Conference, Paris, France, 18/07/05 - 22/07/05 pp. 702-707.

APA

Nerozzi, A., Bruni, M., Burko, L., & Re, V. (2006). Towards a novel wave-extraction method for numerical relativity. 702-707. Paper presented at Albert Einstein Century International Conference, Paris, France.

Vancouver

Nerozzi A, Bruni M, Burko L, Re V. Towards a novel wave-extraction method for numerical relativity. 2006. Paper presented at Albert Einstein Century International Conference, Paris, France.

Author

Nerozzi, A. ; Bruni, Marco ; Burko, L. ; Re, V. / Towards a novel wave-extraction method for numerical relativity. Paper presented at Albert Einstein Century International Conference, Paris, France.6 p.

Bibtex

@conference{70056d3a376a437e87a50c0955212313,
title = "Towards a novel wave-extraction method for numerical relativity",
abstract = "We present the recent results of a research project aimed at constructing a robust wave extraction technique for numerical relativity. Our procedure makes use of Weyl scalars to achieve wave extraction. It is well known that, with a correct choice of null tetrad, Weyl scalars are directly associated to physical properties of the space‐time under analysis in some well understood way. In particular it is possible to associate Ψ4 with the outgoing gravitational radiation degrees of freedom, thus making it a promising tool for numerical wave‐extraction. The right choice of the tetrad is, however, the problem to be addressed. We have made progress towards identifying a general procedure for choosing this tetrad, by looking at transverse tetrads where Ψ1 = Ψ3 = 0. As a direct application of these concepts, we present a numerical study of the evolution of a non‐linearly disturbed black hole described by the Bondi‐Sachs metric. This particular scenario allows us to compare the results coming from Weyl scalars with the results coming from the news function which, in this particular case, is directly associated with the radiative degrees of freedom. We show that, if we did not take particular care in choosing the right tetrad, we would end up with incorrect results.",
author = "A. Nerozzi and Marco Bruni and L. Burko and V. Re",
year = "2006",
language = "English",
pages = "702--707",
note = "Albert Einstein Century International Conference ; Conference date: 18-07-2005 Through 22-07-2005",

}

RIS

TY - CONF

T1 - Towards a novel wave-extraction method for numerical relativity

AU - Nerozzi, A.

AU - Bruni, Marco

AU - Burko, L.

AU - Re, V.

PY - 2006

Y1 - 2006

N2 - We present the recent results of a research project aimed at constructing a robust wave extraction technique for numerical relativity. Our procedure makes use of Weyl scalars to achieve wave extraction. It is well known that, with a correct choice of null tetrad, Weyl scalars are directly associated to physical properties of the space‐time under analysis in some well understood way. In particular it is possible to associate Ψ4 with the outgoing gravitational radiation degrees of freedom, thus making it a promising tool for numerical wave‐extraction. The right choice of the tetrad is, however, the problem to be addressed. We have made progress towards identifying a general procedure for choosing this tetrad, by looking at transverse tetrads where Ψ1 = Ψ3 = 0. As a direct application of these concepts, we present a numerical study of the evolution of a non‐linearly disturbed black hole described by the Bondi‐Sachs metric. This particular scenario allows us to compare the results coming from Weyl scalars with the results coming from the news function which, in this particular case, is directly associated with the radiative degrees of freedom. We show that, if we did not take particular care in choosing the right tetrad, we would end up with incorrect results.

AB - We present the recent results of a research project aimed at constructing a robust wave extraction technique for numerical relativity. Our procedure makes use of Weyl scalars to achieve wave extraction. It is well known that, with a correct choice of null tetrad, Weyl scalars are directly associated to physical properties of the space‐time under analysis in some well understood way. In particular it is possible to associate Ψ4 with the outgoing gravitational radiation degrees of freedom, thus making it a promising tool for numerical wave‐extraction. The right choice of the tetrad is, however, the problem to be addressed. We have made progress towards identifying a general procedure for choosing this tetrad, by looking at transverse tetrads where Ψ1 = Ψ3 = 0. As a direct application of these concepts, we present a numerical study of the evolution of a non‐linearly disturbed black hole described by the Bondi‐Sachs metric. This particular scenario allows us to compare the results coming from Weyl scalars with the results coming from the news function which, in this particular case, is directly associated with the radiative degrees of freedom. We show that, if we did not take particular care in choosing the right tetrad, we would end up with incorrect results.

M3 - Paper

SP - 702

EP - 707

T2 - Albert Einstein Century International Conference

Y2 - 18 July 2005 through 22 July 2005

ER -

ID: 128242