A relativistic formalism for computation of irrotational binary stars in quasi equilibrium states

Abstract

We present relativistic hydrostatic equations for obtaining irrotational binary neutron stars in quasi equilibrium states in 3+1 formalism. Equations derived here are different from those previously given by Bonazzola, Gourgoulhon, and Marck, and have a simpler and more tractable form for computation in numerical relativity. We also present hydrostatic equations for computation of equilibrium irrotational binary stars in first post-Newtonian order.

5 pages, corrected eqs.(2.10), (2.11) and (3.1)

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