Discriminating same-mass Neutron Stars and Black Holes gravitational wave-forms
arXiv:2106.05805 · doi:10.1103/PhysRevD.105.064063
Abstract
Gravitational wave-forms from coalescences of binary black hole systems and binary neutron star systems with low tidal effects can hardly be distinguished if the two systems have similar masses. In the absence of discriminating power based on the gravitational wave-forms, the classification of sources into binary neutron stars, binary black holes and mixed systems containing a black hole and a neutron star can only be unambiguous when assuming the standard model of stellar evolution and using the fact that there exists a mass gap between neutron stars and black holes. This approach is however limited by its own assumptions: for instance the 2.6 solar mass object detected in the GW190814 event remains unclassified, and models of new physics can introduce new compact objects, like primordial black holes, which may have masses in the same range as neutron stars. Then, without an electromagnetic counterpart (kilonova), classifying mergers of compact objects without mass gap criteria remains a difficult task, unless the source is close enough. In what follows we investigate a procedure to discriminate a model between binary neutron star merger and primordial binary black hole merger by using a Bayes factor in simulated wave-forms that we superimpose to realistic detector noise.
arXiv comment18 pages, 7 figures
References in corpus (38)
- Advanced Virgo: a 2nd generation interferometric gravitational wave detector
- GWTC-1: A Gravitational-Wave Transient Catalog of Compact Binary Mergers Observed by LIGO and Virgo during the First and Second Observing Runs
- Advanced LIGO
- The equation of state for nucleon matter and neutron star structure
- GWTC-2: Compact Binary Coalescences Observed by LIGO and Virgo During the First Half of the Third Observing Run
- GW190814: Gravitational Waves from the Coalescence of a 23 M Black Hole with a 2.6 M Compact Object
- GW190425: Observation of a Compact Binary Coalescence with Total Mass
- Gravitational Waves from Mergin Compact Binaries: How Accurately Can One Extract the Binary's Parameters from the Inspiral Waveform?
- Tidal Love numbers of neutron stars
- Constraining neutron star tidal Love numbers with gravitational wave detectors
- Bilby: A user-friendly Bayesian inference library for gravitational-wave astronomy
- Frequency-domain gravitational waves from non-precessing black-hole binaries. II. A phenomenological model for the advanced detector era
- Tidal deformability of neutron stars with realistic equations of state and their gravitational wave signatures in binary inspiral
- Frequency-domain gravitational waves from non-precessing black-hole binaries. I. New numerical waveforms and anatomy of the signal
- Primordial Black Holes as Dark Matter: Recent Developments
- Using gravitational-wave observations and quasi-universal relations to constrain the maximum mass of neutron stars
- Hybrid stars that masquerade as neutron stars
- Bayesian inference for compact binary coalescences with BILBY: Validation and application to the first LIGO--Virgo gravitational-wave transient catalogue
- Measurability of the tidal polarizability of neutron stars in late-inspiral gravitational-wave signals
- An introduction to Bayesian inference in gravitational-wave astronomy: parameter estimation, model selection, and hierarchical models
- Model Waveform Accuracy Standards for Gravitational Wave Data Analysis
- A guide to LIGO-Virgo detector noise and extraction of transient gravitational-wave signals
- Systematic and statistical errors in a bayesian approach to the estimation of the neutron-star equation of state using advanced gravitational wave detectors
- Improving the NRTidal model for binary neutron star systems
- Closed-form tidal approximants for binary neutron star gravitational waveforms constructed from high-resolution numerical relativity simulations
- The Landscape of the Neutrino Mechanism of Core-Collapse Supernovae: Neutron Star and Black Hole Mass Functions, Explosion Energies and Nickel Yields
- Phenomenological model for the gravitational-wave signal from precessing binary black holes with two-spin effects
- Matter imprints in waveform models for neutron star binaries: tidal and self-spin effects
- Primordial black holes with an accurate QCD equation of state
- Observational constraints on hyperons in neutron stars
- Massively parallel Bayesian inference for transient gravitational-wave astronomy
- Including higher order multipoles in gravitational-wave models for precessing binary black holes
- Degeneracy between mass and spin in black-hole-binary waveforms
- Model comparison from LIGO-Virgo data on GW170817's binary components and consequences for the merger remnant
- A template bank to search for gravitational waves from inspiralling compact binaries I: physical models
- Modeling the gravitational wave signature of neutron star black hole coalescences: PhenomNSBH
- Recognizing black holes in gravitational-wave observations: Challenges in telling apart impostors in mass-gap binaries
- Distinguishing high-mass binary neutron stars from binary black holes with second- and third-generation gravitational wave observatories