Astronomy and Astrophysics – Astrophysics
Scientific paper
2006-03-06
Phys.Rev. D73 (2006) 064027
Astronomy and Astrophysics
Astrophysics
29 pages, 21 figures, references added, typos corrected, Phys.Rev.D in press
Scientific paper
10.1103/PhysRevD.73.064027
Three-dimensional simulations for the merger of binary neutron stars (BNSs) are performed in the framework of full general relativity. We pay particular attention to the black hole (BH) formation case and to the resulting mass of the surrounding disk for exploring possibility for formation of the central engine of short-duration gamma-ray bursts. Hybrid equations of state (EOSs) are adopted mimicking realistic, stiff nuclear EOSs, for which the maximum allowed gravitational mass of cold and spherical neutron stars (NSs), M_sph, is larger than 2M_sun. For the simulations, we focus on BNSs of the ADM mass M>2.6M_sun. For M>M_thr, the merger results in prompt formation of a BH irrespective of the mass ratio Q_M with 0.65
Shibata Masaru
Taniguchi Keisuke
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