Axial Quasi-Normal Modes of Scalarized Neutron Stars with Realistic Equations of State

Abstract

We compute the axial quasi-normal modes of static neutron stars in scalar tensor theory. In particular, we employ various realistic equations of state including nuclear, hyperonic and hybrid matter. We investigate the fundamental curvature mode and compare the results with those of General Relativity. We find that the frequency of the modes and the damping time are reduced for the scalarized neutron stars. In addition, we confirm and extend the universal relations for quasi-normal modes known in General Relativity to this wide range of realistic equations of state for scalarized neutron stars and confirm the universality of the scaled frequency and damping time in terms of the scaled moment of inertia as well as compactness for neutron stars with and without scalarization.

References in corpus (68)

• Observation of Gravitational Waves from a Binary Black Hole Merger
• GW170817: Observation of Gravitational Waves from a Binary Neutron Star Inspiral
• Shapiro delay measurement of a two solar mass neutron star
• The Confrontation between General Relativity and Experiment
• A Massive Pulsar in a Compact Relativistic Binary
• Multi-messenger Observations of a Binary Neutron Star Merger
• GW151226: Observation of Gravitational Waves from a 22-Solar-Mass Binary Black Hole Coalescence
• Extended Theories of Gravity
• The equation of state for nucleon matter and neutron star structure
• GW170104: Observation of a 50-Solar-Mass Binary Black Hole Coalescence at Redshift 0.2
• GW170814: A Three-Detector Observation of Gravitational Waves from a Binary Black Hole Coalescence
• Quasi-Normal Modes of Stars and Black Holes
• Testing General Relativity with Present and Future Astrophysical Observations
• Masses, Radii, and Equation of State of Neutron Stars
• A unified equation of state of dense matter and neutron star structure
• GW170608: Observation of a 19-solar-mass Binary Black Hole Coalescence
• Swope Supernova Survey 2017a (SSS17a), the Optical Counterpart to a Gravitational Wave Source
• Gravitational-wave constraints on the neutron-star-matter Equation of State
• The Nuclear Equation of State and Neutron Star Masses
• Constraints on a phenomenologically parameterized neutron-star equation of state
• Hybrid stars that masquerade as neutron stars
• New constraints on radii and tidal deformabilities of neutron stars from GW170817
• Tensor-scalar gravity and binary-pulsar experiments
• GW170817: Joint Constraint on the Neutron Star Equation of State from Multimessenger Observations
• The relativistic pulsar-white dwarf binary PSR J1738+0333 II. The most stringent test of scalar-tensor gravity
• Towards gravitational-wave asteroseismology
• I-Love-Q
• Constraining the Equation of State with Moment of Inertia Measurements
• Phases of dense matter in neutron stars
• Approximate Universal Relations for Neutron Stars and Quark Stars
• Hyperons and massive neutron stars: vector repulsion and SU(3) symmetry
• Extreme Gravity Tests with Gravitational Waves from Compact Binary Coalescences: (II) Ringdown
• Maximum mass, moment of inertia and compactness of relativistic stars
• Gravitational waves and pulsating stars: What can we learn from future observations?
• Quark Matter In Massive Compact Stars
• Search for post-merger gravitational waves from the remnant of the binary neutron star merger GW170817
• Implications from GW170817 and I-Love-Q relations for relativistic hybrid stars
• Extreme Gravity Tests with Gravitational Waves from Compact Binary Coalescences: (I) Inspiral-Merger
• Neutron Star Masses and Radii from Quiescent Low-Mass X-ray Binaries
• Gravitational Wave asteroseismology revisited
• Hyperons in neutron-star cores and two-solar-mass pulsar
• The inverse problem for pulsating neutron stars: A ``fingerprint analysis'' for the supranuclear equation of state
• Observational constraints on hyperons in neutron stars
• Quasi-Normal Modes and Gravitational Wave Astronomy
• Testing the universality of free fall by tracking a pulsar in a stellar triple system
• I-Love-Q, Spontaneously: Slowly Rotating Neutron Stars in Scalar-Tensor Theories
• Neutron stars in scalar-tensor theories of gravity and catastrophe theory
• Inferring physical parameters of compact stars from their f-mode gravitational wave signals
• Rapidly rotating neutron stars in scalar-tensor theories of gravity
• Slowly rotating neutron stars in scalar-tensor theories with a massive scalar field
• The imprint of the equation of state on the axial w-modes of oscillating neutron stars
• The Fate of Neutron Star Binary Mergers
• On spontaneous scalarization
• Stellar Oscillations in Scalar-Tensor Theory of Gravity
• Rapidly rotating neutron stars with a massive scalar field - structure and universal relations
• Neutron star mergers as a probe of modifications of general relativity with finite-range scalar forces
• Slowly Rotating Relativistic Stars in Scalar-Tensor Gravity
• Universal I-Q relations for rapidly rotating neutron and strange stars in scalar-tensor theories
• New class of quasinormal modes of neutron stars in scalar-tensor gravity
• Scalarization of neutron stars with realistic equations of state
• Orbital and epicyclic frequencies around rapidly rotating compact stars in scalar-tensor theories of gravity
• On the maximum mass limit of neutron stars in scalar-tensor gravity
• Moment of inertia -- compactness universal relations in scalar-tensor theories and ${\mathcal{R}}^2$ gravity
• Phenomenological Relations for Axial Quasi-normal Modes of Neutron Stars with Realistic Equations of State
• Exotic matter influence on the polar quasi-normal modes of neutron stars with equations of state satisfying the $2M_{\odot }$ constraint
• Axial quasi-normal modes of Einstein-Gauss-Bonnet-dilaton neutron stars
• Probing Tensor-Vector-Scalar Theory with Gravitational Wave Asteroseismology
• Axial quasinormal modes of static neutron stars in the nonminimal derivative coupling sector of Horndeski gravity: spectrum and universal relations for realistic equations of state

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• Towards Understanding Astrophysical Effects of Nuclear Symmetry Energy
• Spontaneous scalarization
• Family of scalar-nonmetricity theories of gravity
• Radial oscillations and stability of compact stars in $f(R,T)=R+2\beta T$ gravity
• GW170817 implications on the frequency and damping time of f-mode oscillations of neutron stars
• Quasinormal modes of compact objects in alternative theories of gravity
• Ultra long lived quasinormal modes of neutron stars in massive scalar-tensor gravity
• Axial quasi-normal modes of scalarized neutron stars with massive self-interacting scalar field
• Axial quasi-normal modes of neutron stars in $R^2$ gravity
• Neutron Star Structure in the Presence of Nonminimally Coupled Scalar Fields
• Strongest constraint in $f(R)=R+\alpha R^2$ gravity: stellar stability
• Polar Quasinormal Modes of Neutron Stars in Massive Scalar-Tensor Theories
• Oscillation dynamics of scalarized neutron stars
• Nonlinear dynamics of oscillating neutron stars in scalar-tensor gravity
• Reconstruction of the neutron star equation of state from $w$-quasinormal modes spectra with a piecewise polytropic meshing and refinement method
• Stability of topological neutron stars
• Universal relations for quasinormal modes of neutron stars in $R^2$ gravity
• $\varphi$-modes of neutron stars in a massless scalar-tensor theory
• Axial $w$-modes of anisotropic neutron stars