Parametric instability induced scalar gravitational waves from a model pulsating neutron star

Gravitational Lensing of Gravitational Waves from Merging Neutron Star Binaries.

We discuss the gravitational lensing of gravitational waves from merging neutron star binaries, in the context of advanced LIGO type gravitational wave detectors. We consider properties of the expected observational data with cut on the signal-to-noise ratio ρ, i.e., ρ > ρ0. An advanced LIGO should see unlensed inspiral events with a redshift distribution with cut-off at a redshift zmax < 1 for...

Gravitational waves from neutron stars

Gravitational waves from pulsating stars: Evolving the perturbation equations for a relativistic star

Gabrielle Allen, Nils Andersson, Kostas D. Kokkotas, and Bernard F. Schutz Max Planck Institute for Gravitational Physics, The Albert Einstein Institute, D-14473 Potsdam, Germany Department of Physics and Astronomy, University of Wales College of Cardiff, Cardiff CF2 3YB, United Kingdom Department of Physics, Washington University, St Louis, Missouri 63130 Institut für Astronomie und Astrophysi...

Thermal evolution of a pulsating neutron star

We have derived a set of equations to describe the thermal evolution of a neutron star which undergoes small-amplitude radial pulsations. We have taken into account, in the frame of the General Theory of Relativity, the pulsation damping due to the bulk and shear viscosity and the accompanying heating of the star. The neutrino emission of a pulsating non-superfluid star and its heating due to t...

One-armed spiral instability in neutron star mergers and its detectability in gravitational waves

We study the development and saturation of them 1⁄4 1 one-armed spiral instability in remnants of binary neutron star mergers by means of high-resolution long-term numerical relativity simulations. Our results suggest that this instability is a generic outcome of neutron star mergers in astrophysically relevant configurations, including both “stiff” and “soft” nuclear equations of state. We fin...