A single-domain spectral method for black hole puncture data

Details A single-domain spectral method for black hole puncture data A single-domain spectral method for black hole puncture data

2004-04-13

arxiv.org/abs/gr-qc/0404056v2

Phys.Rev.D70:064011,2004

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

13 pages, 6 figures; published version with one important change, see Fig. 4 and the corresponding changes to the text

Scientific paper

10.1103/PhysRevD.70.064011

We calculate puncture initial data corresponding to both single and binary black hole solutions of the constraint equations by means of a pseudo-spectral method applied in a single spatial domain. Introducing appropriate coordinates, these methods exhibit rapid convergence of the conformal factor and lead to highly accurate solutions. As an application we investigate small mass ratios of binary black holes and compare these with the corresponding test mass limit that we obtain through a semi-analytical limiting procedure. In particular, we compare the binding energy of puncture data in this limit with that of a test particle in the Schwarzschild spacetime and find that it deviates by 50% from the Schwarzschild result at the innermost stable circular orbit of Schwarzschild, if the ADM mass at each puncture is used to define the local black hole masses.

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