On the nature of GW190814 and its impact on the understanding of supranuclear matter

Abstract

The observation of a compact object with a mass of $2.50-2.67M_{\odot }$ on August 14, 2019, by the LIGO Scientific and Virgo collaborations (LVC) has the potential to improve our understanding of the supranuclear equation of state. While the gravitational-wave analysis of the LVC suggests that GW190814 likely was a binary black hole system, the secondary component could also have been the heaviest neutron star observed to date. We use our previously derived nuclear-physics-multimessenger astrophysics framework to address the nature of this object. Based on our findings, we determine GW190814 to be a binary black hole merger with a probability of $>99.9\%$. Even if we weaken previously employed constraints on the maximum mass of neutron stars, the probability of a binary black hole origin is still $\sim 81\%$. Furthermore, we study the impact that this observation has on our understanding of the nuclear equation of state by analyzing the allowed region in the mass-radius diagram of neutron stars for both a binary black hole or neutron star--black hole scenario. We find that the unlikely scenario in which the secondary object was a neutron star requires rather stiff equations of state with a maximum speed of sound $c_s\ge \sqrt{0.6}$ times the speed of light, while the binary black hole scenario does not offer any new insight.

9 pages, 3 figures, published version

References in corpus (39)

• GW170817: Observation of Gravitational Waves from a Binary Neutron Star Inspiral
• Advanced Virgo: a 2nd generation interferometric gravitational wave detector
• 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
• GW190425: Observation of a Compact Binary Coalescence with Total Mass $\sim 3.4M_{\odot }$
• Chiral effective field theory and nuclear forces
• Origin of the heavy elements in binary neutron-star mergers from a gravitational wave event
• Constraining the Maximum Mass of Neutron Stars From Multi-Messenger Observations of GW170817
• Improved chiral nucleon-nucleon potential up to next-to-next-to-next-to-leading order
• Neutron matter at next-to-next-to-next-to-leading order in chiral effective field theory
• Stringent constraints on neutron-star radii from multimessenger observations and nuclear theory
• Nonparametric constraints on neutron star matter with existing and upcoming gravitational wave and pulsar observations
• Neutron star tidal deformability and equation of state constraints
• Black Hole-Neutron Star Mergers: Disk Mass Predictions
• Local chiral effective field theory interactions and quantum Monte Carlo applications
• Constraining the dense matter equation of state with joint analysis of NICER and LIGO/Virgo measurements
• Spectral Representations of Neutron-Star Equations of State
• GW190814: Impact of a 2.6 solar mass neutron star on nucleonic equations of state
• A lower bound on the maximum mass if the secondary in GW190814 was once a rapidly spinning neutron star
• Estimates for Disk and Ejecta Masses Produced in Compact Binary Mergers
• Quantifying uncertainties and correlations in the nuclear-matter equation of state
• Neutron Star Equation of State in light of GW190814
• When Did the Remnant of GW170817 Collapse to a Black Hole?
• Direct Astrophysical Tests of Chiral Effective Field Theory at Supranuclear Densities
• GW190814's secondary component with mass $(2.50-2.67)$ M${}_{\odot }$ as a super-fast pulsar
• Confronting gravitational-wave observations with modern nuclear physics constraints
• Studying strong phase transitions in neutron stars with gravitational waves
• GW190814: Spin and equation of state of a neutron star companion
• Discriminating between Neutron Stars and Black Holes with Imperfect Knowledge of the Maximum Neutron Star Mass
• Does Matter Matter? Using the mass distribution to distinguish neutron stars and black holes
• Could the 2.6 $M_{\odot }$ object in GW190814 be a primordial black hole?
• A Population-Informed Mass Estimate for Pulsar J0740+6620
• Distinguishing high-mass binary neutron stars from binary black holes with second- and third-generation gravitational wave observatories
• Distinguishing double neutron star from neutron star-black hole binary populations with gravitational wave observations
• Spin-polarized neutron matter, the maximum mass of neutron stars, and GW170817

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• Observation of gravitational waves from two neutron star-black hole coalescences
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• Hierarchical mergers of stellar-mass black holes and their gravitational-wave signatures
• Progress in Constraining Nuclear Symmetry Energy Using Neutron Star Observables Since GW170817
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• An updated nuclear-physics and multi-messenger astrophysics framework for binary neutron star mergers
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• Tidal Deformability of Dark Matter Admixed Neutron Stars
• Holographic modeling of nuclear matter and neutron stars
• Constraints on the maximum mass of neutron stars with a quark core from GW170817 and NICER PSR J0030+0451 data
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• $R$-mode Stability of GW190814's Secondary Component as a Supermassive and Superfast Pulsar
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• The Hadron-Quark Crossover in Neutron Star within Gaussian Process Regression Method
• Constraining neutron star properties with a new equation of state insensitive approach
• BigApple force and its implications to finite nuclei and astrophysical objects
• Predicting electromagnetic counterparts using low-latency, gravitational-wave data products
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