Constraining nuclear equations of state using gravitational waves from hypermassive neutron stars

Details Constraining nuclear equations of state using gravitational waves from hypermassive neutron stars Constraining nuclear equations of state using gravitational waves from hypermassive neutron stars

2005-04-19

arxiv.org/abs/gr-qc/0504082v1

Phys.Rev.Lett. 94 (2005) 201101

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

4 pages, to appear in Phys. Rev. Lett

Scientific paper

10.1103/PhysRevLett.94.201101

Latest general relativistic simulations for merger of binary neutron stars with realistic equations of state (EOSs) show that a hypermassive neutron star of an ellipsoidal figure is formed after the merger if the total mass is smaller than a threshold value which depends on the EOSs. The effective amplitude of quasiperiodic gravitational waves from such hypermassive neutron stars is $\sim 6$--$7 \times 10^{-21}$ at a distance of 50 Mpc, which may be large enough for detection by advanced laser interferometric gravitational wave detectors although the frequency is high $\sim 3$ kHz. We point out that the detection of such signal may lead to constraining the EOSs for neutron stars.

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