Beta equilibrium under neutron star merger conditions

Abstract

We calculate the nonzero-temperature correction to the beta equilibrium condition in nuclear matter under neutron star merger conditions, in the temperature range $1$MeV$<T\lesssim 5$MeV. We improve on previous work by using a consistent description of nuclear matter based on the IUF and SFHo relativistic mean field models. This includes using relativistic dispersion relations for the nucleons, which we show is essential in these models. We find that the nonzero-temperature correction can be of order $10$ to $20$MeV, and plays an important role in the correct calculation of Urca rates, which can be wrong by factors of $10$ or more if it is neglected.

v2: version published in Universe, minor changes in nomenclature, 20 pages, 14 figures v3: corrected typo in Eq.(C19)

References in corpus (12)

• A Massive Pulsar in a Compact Relativistic Binary
• A NICER View of the Massive Pulsar PSR J0740+6620 Informed by Radio Timing and XMM-Newton Spectroscopy
• Relativistic Mean-Field Hadronic Models under Nuclear Matter Constraints
• Relativistic effective interaction for nuclei, giant resonances, and neutron stars
• Relativistic neutron star merger simulations with non-zero temperature equations of state I. Variation of binary parameters and equation of state
• On the importance of viscous dissipation and heat conduction in binary neutron-star mergers
• Realistic Finite-Temperature Effects in Neutron Star Merger Simulations
• Large amplitude behavior of the bulk viscosity of dense matter
• Viscosity of neutron star matter and $r$-modes in rotating pulsars
• Non-equilibrium beta processes in superfluid neutron star cores
• Electron Positron Capture Rates and the Steady State Equilibrium Condition for Electron-Positron Plasma with Nucleons
• Theory of neutrino emission from nucleon-hyperon matter in neutron stars: Angular integrals

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