Exploring binary-neutron-star-merger scenario of short-gamma-ray bursts by gravitational-wave observation

Astronomy and Astrophysics – Astrophysics – High Energy Astrophysical Phenomena

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Accepted to PRL

Scientific paper

10.1103/PhysRevLett.104.141101

We elucidate the feature of gravitational waves (GWs) from binary neutron star merger collapsing to a black hole by general relativistic simulation. We show that GW spectrum imprints the coalescence dynamics, formation process of disk, equation of state for neutron stars, total masses, and mass ratio. A formation mechanism of the central engine of short $\gamma$-ray bursts, which are likely to be composed of a black hole and surrounding disk, therefore could be constrained by GW observation.

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