$2.6M_{\odot }$ Compact Object and Neutron Stars within Eddington-Inspired Born-Infeld Theory of Gravity

Abstract

In the context of whether a massive compact object recently observed in the GW190814 event is a neutron star (NS) or not, we have studied the role of the parameters $\kappa$ and ${\Lambda }_c$ of the Eddington-inspired Born-Infeld (EiBI) gravity theory on the NS mass-radius relation, moment of inertia, and tidal deformability. The results are compared to recent observation constraints extracted from the analysis of NS observation data. The NS core equation of state (EoS) is calculated using the relativistic mean-field model with the G3 parameter set. In the hyperon sector, the SU(3) and hyperon potential depths are used to determine the hyperon coupling constants. For the inner and outer crusts, we use the crust EoS from Miyatsu et al. (2013). We also maintain the sound speed to not exceed $c$/$\sqrt{3}$ at high densities. We have found that, in general, the NS mass significantly depends on the value of $\kappa$, and the radius $R$ is sensitive to the value of ${\Lambda }_c$. Moreover, as ${\Lambda }_c$ is equal to zero or less than the accepted bound of the cosmological constant, the NS within the EiBI theory is compatible with observation constraints, including $2.0M_{\odot }$ mass, canonical radius $R_{1.4M_{\odot }}$, moment of inertia, and tidal deformation. Our investigation also reveals that the $2.6M_{\odot }$ mass compact object and current observational constraint of canonical radius $R_{1.4M_{\odot }}$ can simultaneously be satisfied only when the ${\Lambda }_c$ value is unphysically too large and negative. Therefore, within the spesific EoS employed in this work, we conclude that the secondary object with $2.6M_{\odot }$ observed in the GW190814 event is not likely a static (or a slow-rotating) NS within the EiBI gravity theory.

arXiv comment41 pages, 14 figures, accepted for publication in Physical Review D

References in corpus (81)

• 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
• Cosmological Constant - the Weight of the Vacuum
• The Cosmological Constant
• GW170817: Measurements of Neutron Star Radii and Equation of State
• Dark Energy and the Accelerating Universe
• GW190814: Gravitational Waves from the Coalescence of a 23 M${}_{\odot }$ Black Hole with a 2.6 M${}_{\odot }$ Compact Object
• Relativistic Shapiro delay measurements of an extremely massive millisecond pulsar
• Testing General Relativity with Present and Future Astrophysical Observations
• Determination of the Equation of State of Dense Matter
• Tidal Love numbers of neutron stars
• Properties of the binary neutron star merger GW170817
• The NANOGrav Nine-year Data Set: Mass and Geometric Measurements of Binary Millisecond Pulsars
• The NANOGrav 11-year Data Set: High-precision timing of 45 Millisecond Pulsars
• Relativistic Mean-Field Hadronic Models under Nuclear Matter Constraints
• Measuring the neutron star equation of state using X-ray timing
• Constraining the Equation of State with Moment of Inertia Measurements
• Eddington's theory of gravity and its progeny
• Constraining the speed of sound inside neutron stars with chiral effective field theory interactions and observations
• Nonparametric constraints on neutron star matter with existing and upcoming gravitational wave and pulsar observations
• Maximum mass, moment of inertia and compactness of relativistic stars
• Born-Infeld inspired modifications of gravity
• GW190814: Impact of a 2.6 solar mass neutron star on nucleonic equations of state
• Compact stars in Eddington inspired gravity
• Extended Gravity Description for the GW190814 Supermassive Neutron Star
• Asymmetric nuclear matter based on chiral two- and three-nucleon interactions
• Constraining the Neutron Star Mass-Radius Relation and Dense Matter Equation of State with NICER. I. The Millisecond Pulsar X-ray Data Set
• Constraining the nuclear matter equation of state around twice saturation density
• A lower bound on the maximum mass if the secondary in GW190814 was once a rapidly spinning neutron star
• Constraining the Neutron Star Mass-Radius Relation and Dense Matter Equation of State with NICER. II. Emission from Hot Spots on a Rapidly Rotating Neutron Star
• GW190814 as a massive rapidly-rotating neutron star with exotic degrees of freedom
• Limiting masses and radii of neutron stars and their implications
• Palatini approach to Born-Infeld-Einstein theory and a geometric description of electrodynamics
• Neutron Star Equation of State in light of GW190814
• New insights on the matter-gravity coupling paradigm
• Surface singularities in Eddington-inspired Born-Infeld gravity
• A no-go theorem for polytropic spheres in Palatini f(R) gravity
• Structure of neutron, quark and exotic stars in Eddington-inspired Born-Infeld gravity
• Eddington-inspired Born-Infeld gravity. Phenomenology of non-linear gravity-matter coupling
• Was GW190814 a black hole -- strange quark star system?
• Equation of State for Nucleonic and Hyperonic Neutron Stars with Mass and Radius Constraints
• Testing universal relations of neutron stars with a nonlinear matter-gravity coupling theory
• GW190814's secondary component with mass $(2.50-2.67)$ M${}_{\odot }$ as a super-fast pulsar
• Inferring neutron star properties from GW170817 with universal relations
• A new equation of state for neutron star matter with nuclei in the crust and hyperons in the core
• Effects of symmetry energy on equation of state for simulations of core-collapse supernovae and neutron-star mergers
• Confronting GW190814 with hyperonization in dense matter and hypernuclear compact stars
• Towards mitigation of apparent tension between nuclear physics and astrophysical observations by improved modeling of neutron star matter
• Consistent relativistic mean field models constrained by GW170817
• The possibility of the secondary object in GW190814 as a neutron star
• Unified Interacting Quark Matter and its Astrophysical Implications
• Secondary component of gravitational-wave signal GW190814 as an anisotropic neutron star
• New parameterization of the effective field theory motivated relativistic mean field model
• NICER X-ray Observations of Seven Nearby Rotation-Powered Millisecond Pulsars
• Radial oscillations and stability of compact stars in Eddington-inspired Born-Infeld gravity
• The regulation of galaxy growth along the size-mass relation by star-formation, as traced by H$\alpha$ in KMOS${}^{3D}$ galaxies at 0.7 < z < 2.7
• Physics at the surface of a star in Eddington-inspired Born-Infeld gravity
• GW190814: On the properties of the secondary component of the binary
• Compact stars in Eddington-inspired Born-Infeld gravity: Anomalies associated with phase transitions
• Optimization of relativistic mean field model for finite nuclei to neutron star matter
• QCD color superconductivity in compact stars: color-flavor locked quark star candidate for the gravitational-wave signal GW190814
• Existence of hyperons in the pulsar PSRJ1614-2230
• Gravity with Auxiliary Fields
• Rapidly rotating $\Delta$-resonance-admixed hypernuclear compact stars
• Probing the nuclear equation of state from the existence of a $\sim 2.6M_{\odot }$ neutron star: the GW190814 puzzle
• Rapidly Spinning Compact Stars with Deconfinement Phase Transition
• Predicting the moment of inertia of pulsar J0737-3039A from Bayesian modeling of the nuclear equation of state
• Rotating neutron stars with quark cores
• Hyperons in neutron stars within Eddington-inspired Born-Infeld theory of gravity
• Speed of sound constraints on maximally rotating neutron stars
• Hadron-Quark phase transition in the context of GW190814
• $R$-mode Stability of GW190814's Secondary Component as a Supermassive and Superfast Pulsar
• Modelling a $2.5M_{\odot }$ Compact Star with Quark Matter
• Weighing massive neutron star with screening gravity: A look on PSR J0740+6620 and GW190814 secondary component
• Constraints from compact star observations on non-Newtonian gravity in strange stars based on a density dependent quark mass model
• Neutron stars in the braneworld within the Eddington-inspired Born-Infeld gravity
• Static spherically symmetric three-form stars
• Constraint on hybrid stars with gravitational wave events
• Model-independent discovery prospects for primordial black holes at LIGO
• Unexpected LIGO events and the Mirror World

Cited by in corpus (7)

• Anisotropic Durgapal-Fuloria Neutron Stars in $f(\mathcal{R},{\mathrm{T}}^2)$ Gravity
• The Role of Baryon Structure in Neutron Stars
• Topology of Born-Infeld-AdS Black Hole Phase Transitions: Bulk and CFT Sides
• Stars and quark stars in bumblebee gravity
• Neutron Stars in Mimetic Gravity
• Rotational mass of anisotropic neutron stars within Rastall gravity
• Stability and wave dynamics in polytropic Eddington-inspired Born-Infeld gravitating solar plasmas