Simulation of Multidimensional Relativistic Hydrodynamics for Astrophysical Applications

Physics

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Scientific paper

Neutron star and/or black hole mergers, core-collapse supernovae, and collapsar models of central engines for long-period gamma-ray bursts likely require multidimensional hydrodynamics for a correct description. In these events, one also encounters very strong gravitational fields because the final state involves either a neutron star or a black hole. Although most calculations to date have employed Newtonian gravity or approximate extensions of Newtonian gravity, the full effects of general relativity must be incorporated in a realistic description of such events. This is particularly true if a black hole is created and if one wishes to describe reliably the gravitational wave signature associated with mergers, core-collapse supernovae, or collapsar central engines. We describe initial steps in the development of massively parallel, general relativistic simulations of multidimensional hydrodynamics for application to mergers of compact objects and to stellar collapses.

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