New covariant density functionals of nuclear matter for compact star simulations

Abstract

We generate three families of extended covariant density functionals of nuclear matter that have varying slope of symmetry energy and skewness at nuclear saturation density, but otherwise share the same basic parameters (symmetry energy, compressibility, saturation parameters, etc.) with the standard DDME2, DD2, and MPE functionals. Tables of the parameters of these new density functionals are given, which can be straightforwardly used in DDME2, DD2, and MPE parameterization-based codes. Furthermore, we provide tables of a large number of equations of state (81 for each family) that can be used in astrophysical simulations to assess the impact of variations of not-well-known slope of symmetry energy and skewness of nuclear systems on the astrophysics of compact objects. We also provide tables of computed integral parameters (mass, radius, and tidal deformability) that can be used, e.g., for modeling gravitational waveforms. Finally, for the extended DDME2-based parameterization, we implement a first-order phase transition to quark matter to obtain a family of equations of state that accommodates a phase transition to quark matter. Analogous tables of the equations of state and integral parameters are provided for this case as well.

v2: matches published version. v1: 8 pages, 4 figures, 5 tables

References in corpus (18)

• GW170817: Observation of Gravitational Waves from a Binary Neutron Star Inspiral
• 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
• Tidal Love numbers of neutron stars
• Relativistic Continuum Hartree Bogoliubov Theory for Ground State Properties of Exotic Nuclei
• Constraints on a phenomenologically parameterized neutron-star equation of state
• Relativistic theory of tidal Love numbers
• Neutron-Rich Nuclei in Heaven and Earth
• Building relativistic mean field models for finite nuclei and neutron stars
• Search for post-merger gravitational waves from the remnant of the binary neutron star merger GW170817
• A new quark-hadron hybrid equation of state for astrophysics - I. High-mass twin compact stars
• The Giant Dipole Resonance as a quantitative constraint on the symmetry energy
• Core-crust transition in neutron stars: predictivity of density developments
• Constraints on Nuclear Symmetry Energy Parameters
• Was GW170817 a canonical neutron star merger? Bayesian analysis with a third family of compact stars
• Extracting nuclear matter properties from the neutron star matter equation of state using deep neural networks
• Impact of Multiple Phase Transitions in Dense QCD on Compact Stars

Cited by in corpus (11)

• Compiled Properties of Nucleonic Matter and Nuclear and Neutron Star Models from Non-Relativistic and Relativistic Interactions
• Hybrid star models in the light of new multi-messenger data
• Bayesian constraints on covariant density functional equations of state of compact stars with new NICER mass-radius measurements
• Confronting new NICER mass-radius measurements with phase transition in dense matter and twin compact stars
• Bayesian inferences on covariant density functionals from multimessenger astrophysical data: Nucleonic models
• Investigating the role of nuclear parameters on oscillation modes in hot Neutron Stars
• $f$-mode oscillations in hot Neutron Stars: Effect of hyperons and neutrino trapping
• Simulating Binary Neutron Star Mergers with Finite-temperature Equations of State: The influences of the slope of the symmetry energy and artificial heating
• Effect of symmetry energy on properties of rapidly rotating neutron stars and universal relations
• Bayesian inferences on covariant density functionals from multimessenger astrophysical data: Influences of parametrizations of density dependent couplings
• Isentropic hybrid stars in the Nambu-Jona-Lasinio model: effects of neutrino trapping