Kilohertz Gravitational Waves from Binary Neutron Star Mergers: Full Spectrum Analyses and High-density Constraints on Neutron Star Matter
arXiv:2507.06293 · doi:10.1103/2jxk-1bf1
Abstract
We demonstrate Bayesian analyses of the complete gravitational-wave spectrum of binary neutron star mergers events with the next-generation detector Einstein Telescope. Our mock analyses are performed for 20 different signals using the TEOBResumSPA_NRPMw waveform that models gravitational-waves from the inspiral to the postmerger phase. They are employed to validate a pipeline for neutron star's extreme matter constraints with prospective detections and under minimal hypotheses on the equation of state. The proposed analysis stack delivers inferences for the mass-radius curve, the mass dependence of the quadrupolar tidal polarizability parameter, the neutron star's maximum density, the maximum mass and the relative radius, and the pressure-density relation itself. We show that a single event at a signal-to-noise ratio close to the minimum threshold for postmerger detection is sufficient to tightly constrain all the above relations as well as quantities like the maximum mass (maximum density) to precision of % (%) at 90% credibility level. We also revisit inferences of prompt black hole formation with full spectrum signals and find that the latter can be robustly identified, even when the postmerger is not detectable due to a low signal-to-noise ratio. New results on the impact of the initial signal frequency and of the detector configuration (triangular vs. two-L) on the source's parameters estimation are also reported. An improvement of approximately one order of magnitude in the precision of the chirp mass and mass ratio can be achieved by lowering the initial frequency from 20 Hz to 2 Hz. The two-L configuration shows instead significant improvements on the inference of the source declination, due to geographical separation of the two detectors.
22 pages, 15 figures
References in corpus (88)
- emcee: The MCMC Hammer
- GW170817: Observation of Gravitational Waves from a Binary Neutron Star Inspiral
- A Massive Pulsar in a Compact Relativistic Binary
- Multi-messenger Observations of a Binary Neutron Star Merger
- GWTC-1: A Gravitational-Wave Transient Catalog of Compact Binary Mergers Observed by LIGO and Virgo during the First and Second Observing Runs
- GW170817: Measurements of Neutron Star Radii and Equation of State
- dynesty: A Dynamic Nested Sampling Package for Estimating Bayesian Posteriors and Evidences
- GW190425: Observation of a Compact Binary Coalescence with Total Mass
- Properties of the binary neutron star merger GW170817
- Science Case for the Einstein Telescope
- Swope Supernova Survey 2017a (SSS17a), the Optical Counterpart to a Gravitational Wave Source
- Sensitivity Studies for Third-Generation Gravitational Wave Observatories
- The Electromagnetic Counterpart of the Binary Neutron Star Merger LIGO/VIRGO GW170817. II. UV, Optical, and Near-IR Light Curves and Comparison to Kilonova Models
- Robust parameter estimation for compact binaries with ground-based gravitational-wave observations using the LALInference software library
- The Emergence of a Lanthanide-Rich Kilonova Following the Merger of Two Neutron Stars
- The Electromagnetic Counterpart of the Binary Neutron Star Merger LIGO/VIRGO GW170817. IV. Detection of Near-infrared Signatures of r-process Nucleosynthesis with Gemini-South
- Neutron-star radius constraints from GW170817 and future detections
- PolyChord: nested sampling for cosmology
- The Electromagnetic Counterpart of the Binary Neutron Star Merger LIGO/VIRGO GW170817. III. Optical and UV Spectra of a Blue Kilonova From Fast Polar Ejecta
- Identifying a first-order phase transition in neutron star mergers through gravitational waves
- Science with the Einstein Telescope: a comparison of different designs
- A guide to LIGO-Virgo detector noise and extraction of transient gravitational-wave signals
- Measuring neutron-star properties via gravitational waves from binary mergers
- Merger of binary neutron stars with realistic equations of state in full general relativity
- Constraining the Equation of State of Neutron Stars from Binary Mergers
- Remnant massive neutron stars of binary neutron star mergers: Evolution process and gravitational waveform
- Time-domain effective-one-body gravitational waveforms for coalescing compact binaries with nonprecessing spins, tides and self-spin effects
- Binary Neutron Star Mergers: Dependence on the Nuclear Equation of State
- Prompt merger collapse and the maximum mass of neutron stars
- Modeling the complete gravitational wave spectrum of neutron star mergers
- Spectral properties of the post-merger gravitational-wave signal from binary neutron stars
- Equation-of-state dependence of the gravitational-wave signal from the ring-down phase of neutron-star mergers
- The Dynamics of Binary Neutron Star Mergers and of GW170817
- Gravitational waves and nonaxisymmetric oscillation modes in mergers of compact object binaries
- Gravitational-wave signal from binary neutron stars: a systematic analysis of the spectral properties
- Exploring properties of high-density matter through remnants of neutron-star mergers
- Revealing the high-density equation of state through binary neutron star mergers
- Gravitational Waves from the Merger of Binary Neutron Stars in a Fully General Relativistic Simulation
- Thermodynamics conditions of matter in neutron star mergers
- Neutron-star Radius from a Population of Binary Neutron Star Mergers
- Probing Extreme-Density Matter with Gravitational Wave Observations of Binary Neutron Star Merger Remnants
- Forecasting the detection capabilities of third-generation gravitational-wave detectors using
- Equation of state constraints from the threshold binary mass for prompt collapse of neutron star mergers
- Direct Astrophysical Tests of Chiral Effective Field Theory at Supranuclear Densities
- Inferring the post-merger gravitational wave emission from binary neutron star coalescences
- Accretion-induced prompt black hole formation in asymmetric neutron star mergers, dynamical ejecta and kilonova signals
- On the maximum mass of neutron stars and GW190814
- kiloHertz gravitational waves from binary neutron star remnants: time-domain model and constraints on extreme matter
- How loud are neutron star mergers?
- Cosmology and dark energy from joint gravitational wave-GRB observations
- Effective-one-body multipolar waveform for tidally interacting binary neutron stars up to merger
- Constraining the dense matter equation of state with new NICER mass-radius measurements and new chiral effective field theory inputs
- Waveform systematics in the gravitational-wave inference of tidal parameters and equation of state from binary neutron star signals
- Nonlinear-in-spin effects in effective-one-body waveform models of spin-aligned, inspiralling, neutron star binaries
- Rush the inspiral: efficient Effective One Body time-domain gravitational waveforms
- Maximum gravitational mass inferred at about precision with multimessenger data of neutron stars
- Viscous-Dynamical Ejecta from Binary Neutron Star Merger
- Systematics of prompt black-hole formation in neutron star mergers
- Comparison of sampling techniques for Bayesian parameter estimation
- Inferring prompt black-hole formation in neutron star mergers from gravitational-wave data
- Numerical relativity simulations of prompt collapse mergers: threshold mass and phenomenological constraints on neutron star properties after GW170817
- Quasi-universal behaviour of the threshold mass in unequal-mass, spinning binary neutron-star mergers
- Second release of the CoRe database of binary neutron star merger waveforms
- Updated observing scenarios and multi-messenger implications for the International Gravitational-wave Network's O4 and O5
- Probing the incompressibility of nuclear matter at ultra-high density through the prompt collapse of asymmetric neutron star binaries
- Beyond the Second Generation of Laser-Interferometric Gravitational Wave Observatories
- Thermal Effects in Binary Neutron Star Mergers
- Constraints on the maximum densities of neutron stars from postmerger gravitational waves with third-generation observations
- Impact of the nuclear symmetry energy on the post-merger phase of a binary neutron star coalescence
- : Bayesian inference of multimessenger astrophysical data, methods and application to gravitational-waves
- Nuclear physics constraints from binary neutron star mergers in the Einstein Telescope era
- Analytic models of the spectral properties of gravitational waves from neutron star merger remnants
- Computing Fast and Reliable Gravitational Waveforms of Binary Neutron Star Merger Remnants
- Detection and parameter estimation of binary neutron star merger remnants
- Detectability of QCD phase transitions in binary neutron star mergers: Bayesian inference with the next generation gravitational wave detectors
- Bayesian inference of multimessenger astrophysical data: Joint and coherent inference of gravitational waves and kilonovae
- Measuring tidal effects with the Einstein Telescope: A design study
- Unraveling information about supranuclear-dense matter from the complete binary neutron star coalescence process using future gravitational-wave detector networks
- Precision constraints on the neutron star equation of state with third-generation gravitational-wave observatories
- Using machine learning to parametrize postmerger signals from binary neutron stars
- Spectroscopic observations of active solar-analog stars having high X-ray luminosity, as a proxy of superflare stars
- Constraining the equation of state in neutron-star cores via the long-ringdown signal
- Long-lived neutron-star remnants from asymmetric binary neutron star mergers: element formation, kilonova signals and gravitational waves
- Postmerger multimessenger analysis of binary neutron stars: Effect of the magnetic field strength and topology
- Likelihood for a Network of Gravitational-Wave Detectors with Correlated Noise
- Potential impact of noise correlation in next-generation gravitational wave detectors
- Constraining parameters of low mass merging compact binary systems with Einstein Telescope alone
- Robust and fast parameter estimation for gravitational waves from binary neutron star merger remnants