Astronomy and Astrophysics – Astrophysics – General Relativity and Quantum Cosmology
Scientific paper
2008-08-28
Phys.Rev.D79:024002,2009
Astronomy and Astrophysics
Astrophysics
General Relativity and Quantum Cosmology
27 pages, 18 figures. Published in Phys. Rev. D
Scientific paper
10.1103/PhysRevD.79.024002
The main aim of this study is the comparison of gravitational waveforms obtained from numerical simulations which employ different numerical evolution approaches and different wave-extraction techniques. For this purpose, we evolve an oscillating, non-rotating polytropic neutron-star model with two different approaches: a full nonlinear relativistic simulation (in three dimensions) and a linear simulation based on perturbation theory. The extraction of the gravitational-wave signal is performed with three methods: The gauge-invariant curvature-perturbation theory based on the Newman-Penrose scalar $\psi_4$; The gauge-invariant Regge-Wheeler-Zerilli-Moncrief metric-perturbation theory of a Schwarzschild space-time; Some generalization of the quadrupole emission formula.
Baiotti Luca
Bernuzzi Sebastiano
Corvino Giovanni
Nagar Alessandro
Pietri Roberto de
No associations
LandOfFree
Gravitational-Wave Extraction from Neutron Star Oscillations: comparing linear and nonlinear techniques does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Gravitational-Wave Extraction from Neutron Star Oscillations: comparing linear and nonlinear techniques, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Gravitational-Wave Extraction from Neutron Star Oscillations: comparing linear and nonlinear techniques will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-541838