Astronomy and Astrophysics – Astrophysics – General Relativity and Quantum Cosmology
Scientific paper
2008-03-26
Phys.Rev.D78:024024,2008
Astronomy and Astrophysics
Astrophysics
General Relativity and Quantum Cosmology
17 pages, 9 figures. Small changes. Version published in Phys. Rev. D
Scientific paper
10.1103/PhysRevD.78.024024
In this work we discuss the time-evolution of nonspherical perturbations of a nonrotating neutron star described by a realistic Equation of State (EOS). We analyze 10 different EOS for a large sample of neutron star models. Various kind of generic initial data are evolved and the corresponding gravitational wave signals are computed. We focus on the dynamical excitation of fluid and spacetime modes and extract the corresponding frequencies. We employ a constrained numerical algorithm based on standard finite differencing schemes which permits stable and long term evolutions. Our code provides accurate waveforms and allows to capture, via Fourier analysis of the energy spectra, the frequencies of the fluid modes with an accuracy comparable to that of frequency domain calculations. The results we present here are useful for provindig comparisons with simulations of nonlinear oscillations of (rotating) neutron star models as well as testbeds for 3D nonlinear codes.
Bernuzzi Sebastiano
Nagar Alessandro
No associations
LandOfFree
Gravitational waves from pulsations of neutron stars described by realistic Equations of State 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 waves from pulsations of neutron stars described by realistic Equations of State, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Gravitational waves from pulsations of neutron stars described by realistic Equations of State will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-50361