Spectral properties of the post-merger gravitational-wave signal from binary neutron stars

• DOI: 10.1103/physrevd.91.064001
• Publication Date: 2015-03-02T17:08:54Z
• Authors: Kentaro Takami; Luciano Rezzolla; Luca Baiotti
• Keywords: Robustness

Extending previous work by a number of authors, we have recently presented new approach in which the detection gravitational waves from merging neutron star binaries can be used to determine equation state matter at nuclear density and hence structure stars. In particular, after performing large numerical-relativity simulations with equations state, found that post-merger emission is characterized two distinct robust spectral features. While high-frequency peak was already shown associated oscillations hypermassive produced merger depend on highlighted low-frequency related process total compactness stars binary. This relation essentially universal provides powerful tool set tight constraints state. We here provide additional information extensive analysis performed, illustrating methods used, tests considered, as well robustness results. also discuss relations deduced when exploring data how these correlate various properties Finally, present simple mechanical toy model explains main features signal even reproduce analytically complex waveforms emitted right merger.