Comparing direct and perturbative wave extraction from binary black hole merger simulation.

Details Comparing direct and perturbative wave extraction from binary black hole merger simulation. Comparing direct and perturbative wave extraction from binary black hole merger simulation.

Dec 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005aas...20714302i&link_type=abstract

American Astronomical Society Meeting 207, #143.02; Bulletin of the American Astronomical Society, Vol. 37, p.1401

Astronomy and Astrophysics

Astronomy

Scientific paper

The existence of gravitational wave detectors like GEO, LIGO, or the proposed LISA will enable us to directly observe phenomena like binary black hole mergers. To correctly interpret the observations one need to use accurate waveform templates, which for these binary systems requires full non-linear evolution of Einsteins equations for its generation. In recent years, developments on numerical simulation of such systems enabled the direct extraction, through long lived full 3D numerical simulations, of waveforms of the gravitational radiation coming from black hole mergers.
Complementary to this approach is the mixed "Einstein-Teukolsky" technique, which starts with the full numerical evolution of the binary system and then changes to a linear evolution of perturbations over a Kerr background. I'll review the key advantages and drawbacks of both approaches, their technical challenges, point the issues of introducing mesh refinement on the simulations, and compare the results on wave extraction obtained by these two methods.

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