Abstract
In the context of neutron star mergers, we study the gravitational wave spectrum of the merger remnant using numerical relativity simulations. Postmerger spectra are characterized by a main peak frequency related to the particular structure and dynamics of the remnant hot hypermassive neutron star. We show that is correlated with the tidal coupling constant that characterizes the binary tidal interactions during the late-inspiral merger. The relation depends very weakly on the binary total mass, mass ratio, equation of state, and thermal effects. This observation opens up the possibility of developing a model of the gravitational spectrum of every merger unifying the late-inspiral and postmerger descriptions.
- Received 9 April 2015
DOI:https://doi.org/10.1103/PhysRevLett.115.091101
© 2015 American Physical Society