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Combining cauchy and characteristic codes. V. cauchy-characteristic matching for a spherical spacetime containing a perfect fluid

Combining cauchy and characteristic codes. V. cauchy-characteristic matching for a spherical spacetime containing a perfect fluid
Combining cauchy and characteristic codes. V. cauchy-characteristic matching for a spherical spacetime containing a perfect fluid
This paper is part of a long term program to develop CCM (combined Cauchy and characteristic) codes as investigative tools in numerical relativity. The approach has two distinct features: (i) it dispenses with an outer boundary condition and replaces this with matching conditions at an interface between the Cauchy and characteristic regions, and (ii) by employing a compactified coordinate, it proves possible to generate global solutions. In this paper it is shown that CCM can be used effectively to model a spherically symmetric perfect fluid. A particular advantage of CCM in avoiding arbitrary mass inflow-outflow boundary conditions is pointed out. Results are presented which include fluid distributions which form black holes and those which give rise to mass outflow.
1550-7998
044019-044019
Dubal, Mark R.
34e983ae-f171-41c8-b875-377f632dd6da
d’Inverno, Ray A.
c5c6a81a-80a2-4b55-807d-d6e5e91e2107
Vickers, James A.
719cd73f-c462-417d-a341-0b042db88634
Dubal, Mark R.
34e983ae-f171-41c8-b875-377f632dd6da
d’Inverno, Ray A.
c5c6a81a-80a2-4b55-807d-d6e5e91e2107
Vickers, James A.
719cd73f-c462-417d-a341-0b042db88634

Dubal, Mark R., d’Inverno, Ray A. and Vickers, James A. (1998) Combining cauchy and characteristic codes. V. cauchy-characteristic matching for a spherical spacetime containing a perfect fluid. Physical Review D, 58 (4), 044019-044019. (doi:10.1103/PhysRevD.58.044019).

Record type: Article

Abstract

This paper is part of a long term program to develop CCM (combined Cauchy and characteristic) codes as investigative tools in numerical relativity. The approach has two distinct features: (i) it dispenses with an outer boundary condition and replaces this with matching conditions at an interface between the Cauchy and characteristic regions, and (ii) by employing a compactified coordinate, it proves possible to generate global solutions. In this paper it is shown that CCM can be used effectively to model a spherically symmetric perfect fluid. A particular advantage of CCM in avoiding arbitrary mass inflow-outflow boundary conditions is pointed out. Results are presented which include fluid distributions which form black holes and those which give rise to mass outflow.

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More information

Published date: 1998
Additional Information: Received 5 March 1998; published 24 July 1998.

Identifiers

Local EPrints ID: 29546
URI: http://eprints.soton.ac.uk/id/eprint/29546
ISSN: 1550-7998
PURE UUID: 9e631c70-370c-40ef-8798-26e8516b4ce5
ORCID for James A. Vickers: ORCID iD orcid.org/0000-0002-1531-6273

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Date deposited: 21 Feb 2007
Last modified: 16 Mar 2024 02:34

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Contributors

Author: Mark R. Dubal
Author: Ray A. d’Inverno
Author: James A. Vickers ORCID iD

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