Gravitational-wave extraction from neutron-star oscillations: Comparing linear and nonlinear techniques
Gravitational-wave extraction from neutron-star oscillations: Comparing linear and nonlinear techniques
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, nonrotating, polytropic neutron-star model with two different approaches: a full nonlinear relativistic simulation (in three dimensions) and …