# Kilohertz gravitational waves from binary neutron star remnants: Time-domain model and constraints on extreme matter

@article{Breschi2019KilohertzGW,
title={Kilohertz gravitational waves from binary neutron star remnants: Time-domain model and constraints on extreme matter},
author={Matteo Breschi and Sebastiano Bernuzzi and Francesco Zappa and Michalis Agathos and Albino Perego and Davide Radice and Alessandro Nagar},
journal={Physical Review D},
year={2019}
}
The remnant star of a neutron star merger is an anticipated loud source of kiloHertz gravitational waves that conveys unique information on the equation of state of hot matter at extreme densities. Observations of such signals are hampered by the photon shot noise of ground-based interferometers and pose a challenge for gravitational-wave astronomy. We develop an analytical time-domain waveform model for postmerger signals informed by numerical relativity simulations. The model completes… Expand
28 Citations

#### Figures and Tables from this paper

Toward observing neutron star collapse with gravitational wave detectors
Gravitational waves from binary neutron star inspirals have been detected along with the electromagnetic transients coming from the aftermath of the merger in GW170817. However, much is still unknownExpand
Numerical-relativity simulations of long-lived remnants of binary neutron star mergers
• Physics
• 2020
We analyze the properties of the gravitational wave signal emitted after the merger of a binary neutron star system when the remnant survives for more than a 80 ms (and up to 140ms). We employ fourExpand
Astrophysical implications of neutron star inspiral and coalescence
• Physics
• 2020
The first inspiral of two neutron stars observed in gravitational waves was remarkably close, allowing the kind of simultaneous gravitational wave and electromagnetic observation that had not beenExpand
Shedding light on the angular momentum evolution of binary neutron star merger remnants: A semi-analytic model
• Physics
• 2020
The main features of the gravitational dynamics of binary neutron star systems are now well established. While the inspiral can be precisely described in the post-Newtonian approximation, fullyExpand
Gravitational waves from holographic neutron star mergers
• Physics
• 2020
We simulate the merger of binary neutron stars and analyze the spectral properties of their gravitational waveforms. For the stars we construct hybrid equations of state (EoSs) with a standardExpand
AT2017gfo: Bayesian inference and model selection of multicomponent kilonovae and constraints on the neutron star equation of state
The joint detection of the gravitational wave GW170817, of the short $\gamma$-ray burst GRB170817A and of the kilonova AT2017gfo, generated by the the binary neutron star merger observed on AugustExpand
Astrophysical constraints on compact objects in 4D Einstein-Gauss-Bonnet gravity
• Physics
• 2021
We study the properties of compact objects in a particular 4D Horndeski theory originating from higher dimensional Einstein-Gauss-Bonnet gravity. Remarkably, an exact vacuum solution is known. ThisExpand
Fine-Tuning the Optical Design of the Advanced Virgo+ Gravitational-Wave Detector Using Binary-Neutron Star Signals
• Physics
• 2020
Advanced Virgo+ is a major upgrade of the Advanced Virgo gravitational-wave detector aiming to increase sensitivity in terms of binary neutron star (BNS) range by a factor 3–5 in the next few years.Expand
Properties of Binary Components and Remnant in GW170817 Using Equations of State in Finite Temperature Field Theory Models
• Physics
• 2019
We investigate gross properties of merger components and remnant in GW170817 using equations of state (EoSs) within the finite temperature field theoretical models. We also adopt finite temperatureExpand
Fast Rotating Neutron Stars: Oscillations and Instabilities
• Physics
• Frontiers in Astronomy and Space Sciences
• 2021
In this review article, we present the main results from our most recent research concerning the oscillations of fast rotating neutron stars. We derive a set of time evolution equations for theExpand

#### References

SHOWING 1-10 OF 203 REFERENCES
Search for Gravitational Waves from a Long-lived Remnant of the Binary Neutron Star Merger GW170817
One unanswered question about the binary neutron star coalescence GW170817 is the nature of its post-merger remnant. A previous search for post-merger gravitational waves targeted high-frequencyExpand
Probing Extreme-density Matter with Gravitational-wave Observations of Binary Neutron Star Merger Remnants
• Physics
• 2016
We present a proof-of-concept study, based on numerical-relativity simulations, of how gravitational waves (GWs) from neutron star merger remnants can probe the nature of matter at extreme densities.Expand
Matter imprints in waveform models for neutron star binaries: tidal and self-spin effects
The combined observation of gravitational and electromagnetic waves from the coalescence of two neutron stars marks the beginning of multimessenger astronomy with gravitational waves (GWs). TheExpand
Observing Gravitational Waves From The Post-Merger Phase Of Binary Neutron Star Coalescence
• Physics
• 2015
We present an effective, low-dimensionality frequency-domain template for the gravitational wave signal from the stellar remnants from binary neutron star coalescence. A principal componentExpand
Modeling the postmerger gravitational wave signal and extracting binary properties from future binary neutron star detections
• Physics
• Physical Review D
• 2019
Gravitational wave astronomy has established its role in measuring the equation of state governing cold supranuclear matter. To date and in the near future, gravitational wave measurements fromExpand
Search for Post-merger Gravitational Waves from the Remnant of the Binary Neutron Star Merger GW170817
The first observation of a binary neutron star (NS) coalescence by the Advanced LIGO and Advanced Virgo gravitational-wave (GW) detectors offers an unprecedented opportunity to study matter under theExpand
Gravitational-wave signal from binary neutron stars: A systematic analysis of the spectral properties
• Physics
• 2016
A number of works have shown that important information on the equation of state of matter at nuclear density can be extracted from the gravitational waves emitted by merging neutron-star binaries.Expand
Inferring the post-merger gravitational wave emission from binary neutron star coalescences
• Physics
• 2017
We present a robust method to characterize the gravitational wave emission from the remnant of a neutron star coalescence. Our approach makes only minimal assumptions about the morphology of theExpand
Observing the post-merger signal of GW170817-like events with improved gravitational-wave detectors
• Physics
• Physical Review D
• 2019
The recent detection of a neutron star binary through gravitational waves, GW170817, has offered another source of information about the properties of cold supranuclear matter. Information from theExpand
Reconstructing the neutron-star equation of state with gravitational-wave detectors from a realistic population of inspiralling binary neutron stars
• Physics
• 2015
Gravitational-wave observations of inspiralling binary neutron star systems can be used to measure the neutron-star equation of state (EOS) through the tidally induced shift in the waveform phaseExpand