Equation of state sensitivities when inferring neutron star and dense matter properties
arXiv:1812.08188 · doi:10.1093/mnras/stz654
Abstract
Understanding the dense matter equation of state at extreme conditions is an important open problem. Astrophysical observations of neutron stars promise to solve this, with NICER poised to make precision measurements of mass and radius for several stars using the waveform modelling technique. What has been less clear, however, is how these mass-radius measurements might translate into equation of state constraints and what are the associated equation of state sensitivities. We use Bayesian inference to explore and contrast the constraints that would result from different choices for the equation of state parametrization; comparing the well-established piecewise polytropic parametrization to one based on physically motivated assumptions for the speed of sound in dense matter. We also compare the constraints resulting from Bayesian inference to those from simple compatibility cuts. We find that the choice of equation of state parametrization and particularly its prior assumptions can have a significant effect on the inferred global mass-radius relation and the equation of state constraints. Our results point to important sensitivities when inferring neutron star and dense matter properties. This applies also to inferences from gravitational wave observations.
arXiv commentto appear in MNRAS
References in corpus (42)
- GW170817: Observation of Gravitational Waves from a Binary Neutron Star Inspiral
- Shapiro delay measurement of a two solar mass neutron star
- A Massive Pulsar in a Compact Relativistic Binary
- MultiNest: an efficient and robust Bayesian inference tool for cosmology and particle physics
- GW170817: Measurements of Neutron Star Radii and Equation of State
- Modern Theory of Nuclear Forces
- Multimodal nested sampling: an efficient and robust alternative to MCMC methods for astronomical data analysis
- X-ray spectral modelling of the AGN obscuring region in the CDFS: Bayesian model selection and catalogue
- Importance Nested Sampling and the MultiNest Algorithm
- Gravitational-wave constraints on the neutron-star-matter Equation of State
- The Equation of State from Observed Masses and Radii of Neutron Stars
- Constraints on a phenomenologically parameterized neutron-star equation of state
- Equation of state and neutron star properties constrained by nuclear physics and observation
- New constraints on radii and tidal deformabilities of neutron stars from GW170817
- The NANOGrav Nine-year Data Set: Mass and Geometric Measurements of Binary Millisecond Pulsars
- Constraining the Symmetry Parameters of the Nuclear Interaction
- PolyChord: next-generation nested sampling
- The Neutron Star Mass-Radius Relation and the Equation of State of Dense Matter
- Measuring the neutron star equation of state using X-ray timing
- Chiral three-nucleon forces and neutron matter
- The Dense Matter Equation of State from Neutron Star Radius and Mass Measurements
- Constraining the speed of sound inside neutron stars with chiral effective field theory interactions and observations
- Constraints on neutron star radii based on chiral effective field theory interactions
- Three-body forces: From cold atoms to nuclei
- A critical examination of constraints on the equation of state of dense matter obtained from GW170817
- The enhanced X-ray Timing and Polarimetry mission - eXTP
- Sound velocity bound and neutron stars
- Interacting quark matter equation of state for compact stars
- Neutron star mass and radius measurements from atmospheric model fits to X-ray burst cooling tail spectra
- Spectral Representations of Neutron-Star Equations of State
- Renormalization group approach to neutron matter: quasiparticle interactions, superfluid gaps and the equation of state
- Neutron star tidal deformabilities constrained by nuclear theory and experiment
- Polarization contributions to the spin-dependence of the effective interaction in neutron matter
- Equation of state constraints for the cold dense matter inside neutron stars using the cooling tail method
- Dense matter with eXTP
- Neutron Star Radii, Universal Relations, and the Role of Prior Distributions
- Neutron Star Mass-Radius Constraints of the Quiescent Low-mass X-ray Binaries X7 and X5 in the Globular Cluster 47 Tuc
- From Neutron Star Observables to the Equation of State. II. Bayesian Inference of Equation of State Pressures
- Determining Neutron Star Properties by Fitting Oblate-Star Waveforms To X-ray Burst Oscillations
- On parametrised cold dense matter equation of state inference
- The radius of the quiescent neutron star in the globular cluster M13
- A pitfall of piecewise-polytropic equation of state inference
Cited by in corpus (108)
- PSR J0030+0451 Mass and Radius from NICER Data and Implications for the Properties of Neutron Star Matter
- A NICER View of PSR J0030+0451: Millisecond Pulsar Parameter Estimation
- A NICER View of the Massive Pulsar PSR J0740+6620 Informed by Radio Timing and XMM-Newton Spectroscopy
- Evidence for quark-matter cores in massive neutron stars
- Nonparametric constraints on neutron star matter with existing and upcoming gravitational wave and pulsar observations
- Constraining Neutron-Star Matter with Microscopic and Macroscopic Collisions
- Neutron star tidal deformability and equation of state constraints
- A NICER view of PSR J0030+0451: Implications for the dense matter equation of state
- Gravitational waves from neutron star mergers and their relation to the nuclear equation of state
- Constraining the dense matter equation of state with joint analysis of NICER and LIGO/Virgo measurements
- Impact of the PSR J0740+6620 radius constraint on the properties of high-density matter
- On the Sound Speed in Neutron Stars
- Nonparametric Inference of Neutron Star Composition, Equation of State, and Maximum Mass with GW170817
- Astrophysical Constraints on the Symmetry Energy and the Neutron Skin of Pb with Minimal Modeling Assumptions
- Dense Nuclear Matter Equation of State from Heavy-Ion Collisions
- Chiral Effective Field Theory and the High-Density Nuclear Equation of State
- Constraining the Neutron Star Mass-Radius Relation and Dense Matter Equation of State with NICER. I. The Millisecond Pulsar X-ray Data Set
- Three-Nucleon Forces: Implementation and Applications to Atomic Nuclei and Dense Matter
- Direct Astrophysical Tests of Chiral Effective Field Theory at Supranuclear Densities
- Quarkyonic Matter Equation of State in Beta-Equilibrium
- On the maximum mass of neutron stars and GW190814
- Bayesian Inference of High-density Nuclear Symmetry Energy from Radii of Canonical Neutron Stars
- Symmetric nuclear matter from the strong interaction
- On the nature of GW190814 and its impact on the understanding of supranuclear matter
- New equations of state constrained by nuclear physics, observations, and QCD calculations of high-density nuclear matter
- Combining Electromagnetic and Gravitational-Wave Constraints on Neutron-Star Masses and Radii
- Constraining the dense matter equation of state with new NICER mass-radius measurements and new chiral effective field theory inputs
- A Detailed Examination of Astrophysical Constraints on the Symmetry Energy and the Neutron Skin of Pb with Minimal Modeling Assumptions
- PSR J0030+0451, GW170817 and the nuclear data: joint constraints on equation of state and bulk properties of neutron stars
- Constraining bosonic asymmetric dark matter with neutron star mass-radius measurements
- Towards grounding nuclear physics in QCD
- Bayesian analysis of neutron-star properties with parameterized equations of state: the role of the likelihood functions
- Equation of state constraints from nuclear physics, neutron star masses, and future moment of inertia measurements
- Implications of NICER for neutron star matter: the QHC21 equation of state
- An updated nuclear-physics and multi-messenger astrophysics framework for binary neutron star mergers
- Evidence against a strong first-order phase transition in neutron star cores: impact of new data
- Inference of the sound speed and related properties of neutron stars
- Impact of large-mass constraints on the properties of neutron stars
- Uncertainty limits on neutron star radius measurements with gravitational waves
- Ranking Love numbers for the neutron star equation of state: The need for third-generation detectors
- Phase Transition Phenomenology with Nonparametric Representations of the Neutron Star Equation of State
- Speed of sound constraints from tidal deformability of neutron stars
- A NICER view of the 1.4 solar-mass edge-on pulsar PSR J0614-3329
- Imposing multi-physics constraints at different densities on the Neutron Star Equation of State
- Multi-physics constraints at different densities to probe nuclear symmetry energy in hyperonic neutron stars
- On the minimum radius of very massive neutron stars
- Updated universal relations for tidal deformabilities of neutron stars from phenomenological equations of state
- 3D modelling of magneto-thermal evolution of neutron stars: method and test cases
- Implicit correlations within phenomenological parametric models of the neutron star equation of state
- Remarks on nuclear matter: how an condensate can spike the speed of sound, and a model of baryons
- Excluded-volume model for quarkyonic matter II: Three-flavor shell-like distribution of baryons in phase space
- Label Switching Problem in Bayesian Analysis for Gravitational Wave Astronomy
- Neutron stars and the dense matter equation of state: from microscopic theory to macroscopic observations
- The Radius of PSR J0740+6620 from NICER and XMM-Newton Data
- Constraining the neutron star equation of state using Pulse Profile Modeling
- Parameter estimation for strong phase transitions in supranuclear matter using gravitational-wave astronomy
- Inference of neutron-star properties with unified crust-core equations of state for parameter estimation
- Dense Matter in Neutron Stars with eXTP
- Inference of the neutron star equation of state from cosmological distances
- Gravitational-Wave and X-ray Probes of the Neutron Star Equation of State
- Constraining a relativistic mean field model using neutron star mass-radius measurements II: Hyperonic models
- Optimal neutron-star mass ranges to constrain the equation of state of nuclear matter with electromagnetic and gravitational-wave observations
- Searching for New Physics in Ultradense Environment: a Review on Dark Matter Admixed Neutron Stars
- From quarks and gluons to color superconductivity at supranuclear densities
- Central Speed of Sound, Trace Anomaly and Observables of Neutron Stars from Perturbative Analyses of Scaled TOV Equations
- Symmetry energy and neutron star properties constrained by chiral effective field theory calculations
- Speed of sound in QCD matter
- Speed of sound in dense strong-interaction matter
- Universal properties of maximum-mass neutron stars: a new tool to explore superdense matter
- Pressure and speed of sound in two-flavor color-superconducting quark matter at next-to-leading order
- Causality violation and the speed of sound of hot and dense quark matter in the Nambu--Jona-Lasinio model
- Constraining first-order phase transition inside neutron stars with application of Bayesian techniques on PSR J0437-4715 NICER data
- Probing fermionic asymmetric dark matter cores using global neutron star properties
- Universal behavior of compact star based upon gravitational binding energy
- Constraints on the dense matter equation of state and neutron star properties from NICER's mass-radius estimate of PSR J0740+6620 and multimessenger observations
- Spin-polarized neutron matter, the maximum mass of neutron stars, and GW170817
- Neural Simulation-Based Inference of the Neutron Star Equation of State directly from Telescope Spectra
- Novel Scalings of Neutron Star Properties from Analyzing Dimensionless Tolman--Oppenheimer--Volkoff Equations
- Relativistic correction to the r-mode frequency in light of multi-messenger constraints
- Speed of sound and liquid-gas phase transition in nuclear matter
- Bayesian inference of strangeon matter using the measurements of PSR J0437-4715 and GW190814
- Universal Relations For Generic Family Of Neutron Star Equations Of State
- Neutron Stars and Gravitational Waves: the Key Role of Nuclear Equation of State
- Quasi-universal relations in the context of future neutron star detections
- Constraining the properties of dense matter and neutron stars by combining nuclear physics and gravitational waves from GW170817
- Nuclear-Physics Multi-Messenger Astrophysics Constraints on the Neutron-Star Equation of State: Adding NICER's PSR J0740+6620 Measurement
- Thermal x-ray studies of neutron stars and the equation of state
- Simulating neutron stars with a flexible enthalpy-based equation of state parametrization in SpECTRE
- Revealing Dark Matter's Role in Neutron Stars Anisotropy: A Bayesian Approach Using Multi-messenger Observations
- Crust (Unified) Tool for Equation-of-state Reconstruction (CUTER) v2
- Insights Into Neutron Stars From Gravitational Redshifts and Universal Relations
- Bayesian inference of neutron star crust properties using an ab initio-benchmarked meta-model
- Investigating the role of nuclear parameters in Neutron Star oscillations: a model comparison
- Direct nonparametric multimessenger constraints on the equation of state of cold dense nuclear matter
- Model-Independent Determination of the Tidal Deformability of a 1.4 Neutron Star from Gravitational-Wave Measurements
- Equation-of-state-informed pulse profile modeling
- Effective Field Theories for Neutron Stars Physics
- Direct Inference of Nuclear Equation-of-State Parameters from Gravitational-Wave Observations
- One- and two-argument equation of state parametrizations with continuous sound speed for neutron star simulations
- Rotating Neutron Stars with Dark Matter Halos
- Density dependent speed of sound and its consequences in neutron stars
- Determining the Equation of State of Cold, Dense Matter with X-ray Observations of Neutron Stars
- Are NICER and GW170817 constraints suggesting a compactified scenario for Neutron stars?
- Measuring Hubble Constant with Dark Neutron Star-Black Hole Mergers
- Constraining Hamiltonians from chiral effective field theory with neutron-star data
- Combining simulation-based inference and universal relations for precise and accurate neutron star science
- Constraints on the Neutron Star Equation of State from GW170817
- Universal Relations for the Increase in the Mass and Radius of a Rotating Neutron Star