Astronomy and Astrophysics – Astrophysics – General Relativity and Quantum Cosmology
Scientific paper
2001-11-02
Phys.Rev. D65 (2002) 103005
Astronomy and Astrophysics
Astrophysics
General Relativity and Quantum Cosmology
23 pages, 12 figures. Accepted for publication in Phys. Rev. D. v3: Final Version
Scientific paper
10.1103/PhysRevD.65.103005
We present a new 3D SPH code which solves the general relativistic field + hydrodynamics equations in the conformally flat approximation. Several test cases are considered to test different aspects of the code. We finally apply then the code to the coalescence of a neutron star binary system. The neutron stars are modeled by a polytropic equation of state (EoS) with adiabatic indices $\Gamma=2.0$, $\Gamma=2.6$ and $\Gamma=3.0$. We calculate the gravitational wave signals, luminosities and frequency spectra by employing the quadrupole approximation for emission and back reaction in the slow motion limit. In addition, we consider the amount of ejected mass.
Oechslin Roland
Rosswog Stephan
Thielemann Friederich-Karl
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