Nuclear Superfluidity and Cooling Time of Neutron-Star Crust

Abstract

We analyse the effect of neutron superfluidity on the cooling time of inner crust matter in neutron stars, in the case of a rapid cooling of the core. The specific heat of the inner crust, which determines the thermal response of the crust, is calculated in the framework of HFB approach at finite temperature. The calculations are performed with two paring forces chosen to simulate the pairing properties of uniform neutron matter corresponding respectively to Gogny-BCS approximation and to many-body techniques including polarisation effects. Using a simple model for the heat transport across the inner crust, it is shown that the two pairing forces give very different values for the cooling time.

arXiv comment6 pages, 3 figures

References in corpus (6)

• Neutron Star Cooling
• Superfluid Properties of the Inner Crust of Neutron Stars
• Nuclear Superfluidity and Specific Heat in the Inner Crust of Neutron Stars
• Collective excitations in the inner crust of neutron stars : supergiant resonances
• Semiclassical Approximation to Neutron Star Superfluidity Corrected for Proximity Effects
• Screening Effects on ${}^1{S}_0$ Pairing in Neutron Matter

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• The cluster structure of the inner crust of neutron stars in the Hartree-Fock-Bogoliubov approach
• Thermalisation time and specific heat of neutron stars crust
• Unified description of neutron superfluidity in the neutron-star crust with analogy to anisotropic multi-band BCS superconductors
• Temperature dependence of the symmetry energy and neutron skins in Ni, Sn, and Pb isotopic chains
• Triplet Pairing in pure neutron matter
• BEC-BCS Crossover in Neutron Matter with Renormalization Group based Effective Interactions
• Effect of temperature on the effective mass and the neutron skin of nuclei
• Wigner-Seitz cells in neutron star crust with finite range interactions
• Temperature dependence of the volume and surface contributions to the nuclear symmetry energy within the coherent density fluctuation model
• Neutron specific heat in the crust of neutron stars from the nuclear band theory
• Properties of a quantum vortex in neutron matter
• Entrainment effects in neutron-proton mixtures within the nuclear-energy density functional theory. II. Finite temperatures and arbitrary currents
• Finite-size effects and collective vibrations in the inner crust of neutron stars
• Microscopic description of neutron emission rates in compound nuclei
• Anderson-Bogoliubov phonon in inner crust of neutron stars: Dipole excitation in spherical Wigner-Seitz cell
• The Auxiliary Field Diffusion Monte Carlo Method for Nuclear Physics and Nuclear Astrophysics
• Heat capacity of low density neutron matter: from quantum to classical regimes
• Effects of dilute neutron matter on the neutron star crust equation of state