Modeling the complete gravitational wave spectrum of neutron star mergers

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 $f_2$ related to the particular structure and dynamics of the remnant hot hypermassive neutron star. We show that $f_2$ is correlated with the tidal coupling constant ${\kappa }_2^T$ that characterizes the binary tidal interactions during the late-inspiral--merger. The relation $f_2({\kappa }_2^T)$ 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.

References in corpus (14)

• Tidal Love numbers of neutron stars
• Constraints on a phenomenologically parameterized neutron-star equation of state
• Relativistic theory of tidal Love numbers
• Calibration of Moving Puncture Simulations
• Spectral properties of the post-merger gravitational-wave signal from binary neutron stars
• Testing Approximations of Thermal Effects in Neutron Star Merger Simulations
• Modeling the dynamics of tidally-interacting binary neutron stars up to merger
• Constraining the neutron star equation of state with gravitational wave signals from coalescing binary neutron stars
• High resolution numerical-relativity simulations for the merger of binary magnetized neutron stars
• Reconstructing the neutron-star equation of state with gravitational-wave detectors from a realistic population of inspiralling binary neutron stars
• Tidal effects in binary neutron star coalescence
• Revealing the high-density equation of state through binary neutron star mergers
• Numerical relativity simulations of neutron star merger remnants using conservative mesh refinement
• Prospects For High Frequency Burst Searches Following Binary Neutron Star Coalescence With Advanced Gravitational Wave Detectors

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