Creation of a dense torus in the coalescence of a black hole with a neutron star
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We used a newtonian SPH (smooth-particle hydrodynamics) code to follow the final stages of evolution of a coalescing binary system of a neutron star and a black hole. We find that the outcome of the "merger" is very sensitive to the equation of state describing the neutron star. A neutron star with a soft equation of state (polytrope with index Gamma=5/3) is completely disrupted, and a fairly large and long-lived accretion torus is formed.
To appear in the Proceedings of the 3rd INTEGRAL workshop, Taormina, Italy, 1998
To appear in the Proceedings of the 3rd INTEGRAL workshop, Taormina, Italy, 1998