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[53.14] Relativistic Calculations of Coalescing Binary Neutron Stars with a Spectral Methods Field Solver

J.A. Faber, P. Grandclement, F.A. Rasio (Northwestern U.)

We present results on the coalescence of binary neutron star (NS) systems from our new relativistic hydrodynamics code. Using the equations of the conformally flat (CF) formalism, we have combined a spectral-methods field sovler with a smoothed particle hydrodynamics (SPH) evolution treatment, to allow for a combination of high accuracy as well as computational speed. We have tested the code extensively, on a variety of configurations, confirming in the process that quasi-equilibrium NS binary sequences remain stable until the formation of a cusp. We have computed the gravitational waveform for coalescing NS binaries, the first ever produced with a spectral methods code. Additionally, we find that the mass ejected from the system is strongly suppressed due to relativistic effects.

The author(s) of this abstract have provided an email address for comments about the abstract: jfaber@northwestern.edu

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Bulletin of the American Astronomical Society, 35#5
© 2003. The American Astronomical Soceity.