The Post-Quasistatic Approximation as a test bed for Numerical Relativity

Details The Post-Quasistatic Approximation as a test bed for Numerical Relativity The Post-Quasistatic Approximation as a test bed for Numerical Relativity

2009-05-20

arxiv.org/abs/0905.3362v1

Phys.Rev.D79:107502,2009

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

4 pages; to appear as a Brief Report in Physical Review D

Scientific paper

It is shown that observers in the standard ADM 3+1 treatment of matter are the same as the observers used in the matter treatment of Bondi: they are comoving and local Minkowskian. Bondi's observers are the basis of the post--quasitatic approximation (PQSA) to study a contracting distribution of matter. This correspondence suggests the possibility of using the PQSA as a test bed for Numerical Relativity. The treatment of matter by the PQSA and its connection with the ADM 3+1 treatment are presented, for its practical use as a calibration tool and as a test bed for numerical relativistic hydrodynamic codes.

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