Evolving black hole-neutron star binaries in general relativity using pseudospectral and finite difference methods
- 13 November 2008
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review D
- Vol. 78 (10), 104015
- https://doi.org/10.1103/physrevd.78.104015
Abstract
We present a code for solving the coupled Einstein-hydrodynamics equations to evolve relativistic, self-gravitating fluids. The Einstein field equations are solved in generalized harmonic coordinates on one grid using pseudospectral methods, while the fluids are evolved on another grid using shock-capturing finite difference or finite volume techniques. We show that the code accurately evolves equilibrium stars and accretion flows. Then we simulate an equal-mass nonspinning black hole-neutron star binary, evolving through the final four orbits of inspiral, through the merger, to the final stationary black hole. The gravitational waveform can be reliably extracted from the simulation.Keywords
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This publication has 66 references indexed in Scilit:
- The Total Merger Rate of Compact Object Binaries in the Local UniverseThe Astrophysical Journal, 2008
- Producing Ultrastrong Magnetic Fields in Neutron Star MergersScience, 2006
- Mergers of Neutron Star–Black Hole Binaries with Small Mass Ratios: Nucleosynthesis, Gamma‐Ray Bursts, and Electromagnetic TransientsThe Astrophysical Journal, 2005
- A short γ-ray burst apparently associated with an elliptical galaxy at redshift z = 0.225Nature, 2005
- The afterglow of GRB 050709 and the nature of the short-hard γ-ray burstsNature, 2005
- Discovery of the short γ-ray burst GRB 050709Nature, 2005
- Prompt Mergers of Neutron Stars with Black HolesThe Astrophysical Journal, 2005
- High-resolution calculations of merging neutron stars -- I. Model description and hydrodynamic evolutionMonthly Notices of the Royal Astronomical Society, 2002
- Gamma-ray bursts as the death throes of massive binary starsThe Astrophysical Journal, 1992
- Black-hole-neutron-star collisionsThe Astrophysical Journal, 1974