Multimessenger constraints for ultra-dense matter

Abstract

Recent rapid progress in neutron-star (NS) observations offers great potential to constrain the properties of strongly interacting matter under the most extreme conditions. In order to fully exploit the current observational inputs and to study the impact of future observations of NS masses, radii, and tidal deformabilities, we analyze a large ensemble of randomly generated viable NS-matter equations of state (EoSs) and the corresponding rotating stellar structures. We discuss the compatibility and impact of various hypotheses and measurements on the EoS, including those involving the merger product of the gravitational-wave (GW) event GW170817, the binary merger components in GW190814, and radius measurements of the pulsar PSR J0740+6620. We obtain an upper limit for the dimensionless spin of a rigidly rotating NS, $|\chi |<0.81$, an upper limit for the compactness of a NS, $GM/(R{c}^2)<0.33$, and find that the conservative hypothesis that the remnant in GW170817 ultimately collapsed to a black hole strongly constrains the EoS and the maximal mass of NSs, implying $M_{\text{TOV}}<2.53M_{\odot }$ (or $M_{\text{TOV}}<2.19M_{\odot }$ if we assume that a hypermassive NS was created). Additionally, we derive a novel lower limit for the tidal deformability as a function of NS mass and provide fitting formulae that can be used to set priors for parameter estimation and to discern whether neutron stars or other compact objects are involved in future low-mass GW events. Finally, we find that the recent NICER results for the radius of the massive NS PSR J0740+6620 place strong constraints for the behavior of the EoS, and that the indicated radius values $R(2M_{\odot })\gtrsim 11$ km are compatible with moderate speeds of sound in NS matter and thus with the existence of quark matter cores in massive NSs.

25 pages, 2 appendices, 15 figures, 1 table. Differences from v2: Central energy densities added to all ep figures; additional figures added; additional fitting formulas added; additional references added; additional discussions added; baryon masses added to table; appendix on EOS construction added. Version published in PRX

References in corpus (54)

• 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
• Multi-messenger Observations of a Binary Neutron Star Merger
• GW190814: Gravitational Waves from the Coalescence of a 23 M${}_{\odot }$ Black Hole with a 2.6 M${}_{\odot }$ Compact Object
• 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
• Chiral effective field theory and nuclear forces
• Tidal Love numbers of neutron stars
• A NICER View of the Massive Pulsar PSR J0740+6620 Informed by Radio Timing and XMM-Newton Spectroscopy
• Swope Supernova Survey 2017a (SSS17a), the Optical Counterpart to a Gravitational Wave Source
• 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
• Spectroscopic identification of r-process nucleosynthesis in a double neutron star merger
• Refined Mass and Geometric Measurements of the High-Mass PSR J0740+6620
• A kilonova as the electromagnetic counterpart to a gravitational-wave source
• Light Curves of the Neutron Star Merger GW170817/SSS17a: Implications for R-Process Nucleosynthesis
• Constraints on a phenomenologically parameterized neutron-star equation of state
• Illuminating Gravitational Waves: A Concordant Picture of Photons from a Neutron Star Merger
• Constraining the Maximum Mass of Neutron Stars From Multi-Messenger Observations of GW170817
• Optical emission from a kilonova following a gravitational-wave-detected neutron-star merger
• Improved nuclear matter calculations from chiral low-momentum interactions
• The Electromagnetic Counterpart of the Binary Neutron Star Merger LIGO/Virgo GW170817. I. Dark Energy Camera Discovery of the Optical Counterpart
• GW170817: Joint Constraint on the Neutron Star Equation of State from Multimessenger Observations
• Neutron-star radius constraints from GW170817 and future detections
• Cold Quark Matter
• 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
• Modeling GW170817 based on numerical relativity and its implications
• Neutron matter at next-to-next-to-next-to-leading order in chiral effective field theory
• Kilonova from post-merger ejecta as an optical and near-infrared counterpart of GW170817
• The Dynamics of Binary Neutron Star Mergers and of GW170817
• Progress in Constraining Nuclear Symmetry Energy Using Neutron Star Observables Since GW170817
• 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
• Astrophysical Constraints on the Symmetry Energy and the Neutron Skin of ${}^{208}$Pb with Minimal Modeling Assumptions
• A lower bound on the maximum mass if the secondary in GW190814 was once a rapidly spinning neutron star
• General relativistic simulations of compact binary mergers as engines of short gamma-ray bursts
• Revisiting the lower bound on tidal deformability derived by AT 2017gfo
• Soft interactions in cold quark matter
• Numerical Relativity and Astrophysics
• Cold quark matter at N3LO: soft contributions
• Impact of PREX-II and combined Radio/NICER/XMM-Newton's mass-radius measurement of PSRJ0740+6620 on the dense matter equation of state
• On the stability and maximum mass of differentially rotating relativistic stars
• Quark-hadron crossover equations of state for neutron stars: constraining the chiral invariant mass in a parity doublet model
• Probing the nuclear equation of state from the existence of a $\sim 2.6M_{\odot }$ neutron star: the GW190814 puzzle
• Universal relations for differentially rotating relativistic stars at the threshold to collapse
• The Radius of PSR J0740+6620 from NICER and XMM-Newton Data
• Neutron rich matter in the laboratory and in the heavens after GW170817
• Fast ejecta as a potential way to distinguish black holes from neutron stars in high-mass gravitational-wave events
• Impact of massive neutron star radii on the nature of phase transitions in dense matter
• Revisiting the maximum mass of differentially rotating neutron stars in general relativity: Übermassive stars with realistic equations of state
• Electromagnetic Counterparts of Compact Binary Mergers
• Radial oscillations in neutron stars from QCD
• GW170817 and GW190814: tension on the maximum mass
• Constraints on the Neutron Star Equation of State from GW170817

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