Extended Gravity Description for the GW190814 Supermassive Neutron Star

Abstract

Very recently a compact object with a mass in the range $2.50÷2.67M_{\odot }$ has been discovered via gravitational waves detection of a compact binary coalescence. The mass of this object makes it among the heaviest neutron star never detected or the lightest black hole ever observed. Here we show that a neutron star with this observed mass, can be consistently explained with the mass-radius relation obtained by Extended Theories of Gravity. Furthermore, equations of state, consistent with LIGO observational constraints, are adopted. We consider also the influence of rotation and show that masses of rotating neutron stars can exceed $2.6M_{\odot }$ for some equations of state compatible with LIGO data.

arXiv comment8 pages, 3 figures

References in corpus (33)

• Observational Evidence from Supernovae for an Accelerating Universe and a Cosmological Constant
• Measurements of Omega and Lambda from 42 High-Redshift Supernovae
• First Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Determination of Cosmological Parameters
• GW170817: Observation of Gravitational Waves from a Binary Neutron Star Inspiral
• Unified cosmic history in modified gravity: from F(R) theory to Lorentz non-invariant models
• Type Ia Supernova Discoveries at z>1 From the Hubble Space Telescope: Evidence for Past Deceleration and Constraints on Dark Energy Evolution
• Shapiro delay measurement of a two solar mass neutron star
• Extended Theories of Gravity
• Is Cosmic Speed-Up Due to New Gravitational Physics?
• Modified gravity with negative and positive powers of the curvature: unification of the inflation and of the cosmic acceleration
• The Physics of Neutron Stars
• Curvature Quintessence
• A Radio Pulsar Spinning at 716 Hz
• Extended Theories of Gravity and their Cosmological and Astrophysical Applications
• Statistical Model for a Complete Supernova Equation of State
• Relativistic Mean-Field Theory and the High-Density Nuclear Equation of State
• Refined Neutron-Star Mass Determinations for Six Eclipsing X-Ray Pulsar Binaries
• The Lyman-alpha Forest Power Spectrum from the Sloan Digital Sky Survey
• Probes and Tests of Strong-Field Gravity with Observations in the Electromagnetic Spectrum
• Black holes, cosmological solutions, future singularities, and their thermodynamical properties in modified gravity theories
• Spherically symmetric solutions in f(R)-gravity via Noether Symmetry Approach
• The Mass-Radius relation for Neutron Stars in $f(R)$ gravity
• A 2.1 Solar Mass Pulsar Measured by Relativistic Orbital Decay
• Maximal neutron star mass and the resolution of hyperon puzzle in modified gravity
• Nonperturbative models of quark stars in $f(R)$ gravity
• The realistic models of relativistic stars in f(R) = R + alpha R^2 gravity
• The mass of the neutron star in Vela X-1
• Fast Rotating Neutron Stars with Realistic Nuclear Matter Equation of State
• The Fate of Neutron Star Binary Mergers
• Tracking quintessence by cosmic shear - Constraints from VIRMOS-Descart and CFHTLS and future prospects
• Implications of the mass $M=2.17_{-0.10}^{+0.11}$M${}_{\odot }$ of PSR~J0740+6620 on the Equation of State of Super-Dense Neutron-Rich Nuclear Matter
• The mass-radius relation for neutron stars in $f(R)=R+\alpha R^2$ gravity: a comparison between purely metric and torsion formulations
• Twins: The Two Shortest Period Non-Interacting Double Degenerate White Dwarf Stars

Cited by in corpus (68)

• Causal Limit of Neutron Star Maximum Mass in $f(R)$ Gravity in View of GW190814
• Anisotropic compact stars in $f(R)$ gravity
• Was GW190814 a black hole -- strange quark star system?
• Exploring physical properties of minimally deformed strange star model and constraints on maximum mass limit in $f(\mathcal{Q})$ gravity
• Anisotropic Strange Star Model Beyond Standard Maximum Mass Limit by Gravitational Decoupling in $f(Q)$ Gravity
• Neutron stars in $f(\mathtt{R},{\mathtt{L}}_{\mathtt{m}})$ gravity with realistic equations of state: joint-constrains with GW170817, massive pulsars, and the PSR J0030+0451 mass-radius from $NICER$ data
• Neutron stars in $f(\mathcal{R},\mathcal{T})$ gravity using realistic equations of state in the light of massive pulsars and GW170817
• Maximum mass of compact stars from gravitational wave events with finite-temperature equations of state
• Maximum Baryon Masses for Static Neutron Stars in $f(R)$ Gravity
• QCD color superconductivity in compact stars: color-flavor locked quark star candidate for the gravitational-wave signal GW190814
• Astrophysical constraints on compact objects in 4D Einstein-Gauss-Bonnet gravity
• Influence of three parameters on maximum mass and stability of strange star under linear $f(Q)-$action
• Probing the nuclear equation of state from the existence of a $\sim 2.6M_{\odot }$ neutron star: the GW190814 puzzle
• Compact Binary Coalescences: Astrophysical Processes and Lessons Learned
• Anisotropic quark stars in $R^2$ gravity
• $R^p$ Attractors Static Neutron Star Phenomenology
• Universal Inflationary Attractors Implications on Static Neutron Stars
• Inflationary Attractors Predictions for Static Neutron Stars in the Mass-Gap Region
• Neutron Stars in Scalar-tensor Gravity with Quartic Order Scalar Potential
• Anisotropic quark stars in $f(R)=R^{1+\epsilon }$ gravity
• Static Neutron Stars Perspective of Quadratic and Induced Inflationary Attractor Scalar-tensor Theories
• Radial pulsations, moment of inertia and tidal deformability of dark energy stars
• Finch-Skea star model in f(R, T ) theory of gravity
• Decoupled Anisotropic Buchdahl's Relativistic Models in $f(\mathbb{R},\mathbb{T})$ Theory
• Realistic neutron star models in $f(T)$ gravity
• Maximal Masses of White Dwarfs for Polytropes in $R^2$ Gravity and Theoretical Constraints
• Compact Star in General $F(R)$ Gravity: Inevitable Degeneracy Problem and Non-Integer Power Correction
• Symmetry energy effect on the secondary component of GW190814 as a neutron star
• Rapidly rotating compact stars in Rastall's gravity
• Charged quark stars in metric $f(R)$ gravity
• A Review of Stable, Traversable Wormholes in f (R) Gravity Theories
• Gravitationally collapsing stars in $f(R)$ gravity
• $2.6M_{\odot }$ Compact Object and Neutron Stars within Eddington-Inspired Born-Infeld Theory of Gravity
• Moment of inertia and compactness of quark stars within the context of $f(R,T,L_m)$ gravity
• Rotating black hole in $f(R)$ theory
• Spherical doubly warped spacetimes for radiating stars and cosmology
• Uniqueness of the Inflationary Higgs Scalar for Neutron Stars and Failure of non-inflationary Approximations
• Minisuperspace Quantum Cosmology in Metric and Affine Theories of Gravity
• Neutron Stars in Modified Teleparallel Gravity
• $R^2$-gravity quark stars from perturbative QCD
• Influence of pressure anisotropy and non-metricity parameter on mass-radius relation and stability of millisecond pulsar in $f(Q)$ gravity
• Invariant quantities of Scalar-Tensor Theories for stellar structure
• Circular geodesics in the field of double-charged dilatonic black holes
• Early evolution of fully convective stars in scalar-tensor gravity
• Compact relativistic geometries in $f(R,G)$ gravity
• Neutron Stars In $f(R,T)$ Theory: Slow Rotation Approximation
• Black Holes merging with Low Mass Gap Objects inside Globular Clusters
• Gravitational collapse of compact stars in $f(R)=\xi R^4$ gravity
• Compact star in noninteger power model of $f(R)$ gravity
• Complexity Factor for Static Cylindrical System in Energy-momentum Squared Gravity
• Neutron Stars in Palatini $R+\alpha R^2$ and $R+\alpha R^2+\beta Q$ Theories
• Anti-de Sitter neutron stars in the theory of gravity with nonminimal derivative coupling
• Ridges in rotating neutron-star properties due to first order phase transitions
• The effect of pressure anisotropy on quark stars structure in the Starobinsky model
• Neutron Stars in Mimetic Gravity
• Analytical Stellar Models of Neutron Stars in Teleparallel Gravity
• Gravitational Collapse of Anisotropic Compact Stars in Modified $f(R)$ Gravity
• Structural properties of charged compact stars with color-flavour-locked quarks matter
• Probing Strong Field $f(R)$ Gravity and Ultra-Dense Matter with the Structure and Thermal Evolution of Neutron Stars
• The gravitational field outside a spatially compact stationary source in a generic fourth-order theory of gravity
• Dynamical Chameleon Neutron Stars: stability, radial oscillations and scalar radiation in spherical symmetry
• Properties of rapidly rotating hot neutron stars within Brueckner theory
• Vector mesons from a holographic QCD model in $f(R)$-dilaton gravity
• Maximum mass limit of strange stars in quadratic curvature-matter coupled gravity
• Mass-radius relation, moment of inertia, and tidal love numbers of anisotropic neutron stars in f (R,T) gravity
• Anisotropic Compact Stellar Objects in Modified Gauss-Bonnet Gravity
• Novel Stellar Astrophysics from Extended Gravity
• Applying higher-modes consistency test on GW190814 : lessons on no-hair theorem, nature of the secondary compact object and waveform modeling