Modeling Neutron Star Matter in the Age of Multimessenger Astrophysics

Abstract

The interpretation of the available and forthcoming data obtained from multimessenger astrophysical observations -- potentially providing unprecedented access to neutron star properties -- will require the development of novel, accurate theoretical models of dense matter. Of great importance, in this context, will be the capability to devise a description of thermal effects applicable to the study of quantities other than the equation of state, such as the transport coefficients and the neutrino mean free path in the nuclear medium. The formalism based on correlated basis states and the cluster expansion technique has been previously employed to derive a well-behaved effective interaction -- suitable for use in standard perturbation theory -- from a state-of-the-art nuclear Hamiltonian, including phenomenological two- and three-nucleon potentials. Here, we provide a comprehensive and self-contained account of the extension of this approach to the treatment of finite-temperature effects, and report the results of numerical calculations of a number of properties of nuclear matter with arbitrary neutron excess and temperature up to 50 MeV.

20 pages, 11 figures, typeset using aastex631

References in corpus (18)

• GW170817: Observation of Gravitational Waves from a Binary Neutron Star Inspiral
• A Massive Pulsar in a Compact Relativistic Binary
• Multi-messenger Observations of a Binary Neutron Star Merger
• A NICER View of PSR J0030+0451: Millisecond Pulsar Parameter Estimation
• Chiral effective field theory and nuclear forces
• Nuclear Force from Lattice QCD
• Probing Cold Dense Nuclear Matter
• Local chiral effective field theory interactions and quantum Monte Carlo applications
• Updated analysis of NN elastic scattering to 3 GeV
• Minimally non-local nucleon-nucleon potentials with chiral two-pion exchange including $\Delta$'s
• Shear viscosity of neutron matter from realistic nucleon-nucleon interactions
• Density-dependent nucleon-nucleon interaction from three-nucleon forces
• Hybrid equation of state approach in binary neutron-star merger simulations
• Benchmark calculations of infinite neutron matter with realistic two- and three-nucleon potentials
• The Radius of PSR J0740+6620 from NICER and XMM-Newton Data
• Binary neutron star merger simulations with hot microscopic equations of state
• Equation of state constraints from multi-messenger observations of neutron star mergers
• Perturbation Theory of Nuclear Matter with a Microscopic Effective Interaction

Cited by in corpus (2)

• Thermal effects on nuclear matter properties
• Relativistic Corrections to the CBF Effective Nuclear Hamiltonian