A New Equation of State for Astrophysical Simulations

Abstract

We generate a new complete equation of state (EOS) of nuclear matter for a wide range of temperatures, densities, and proton fractions ready for use in astrophysical simulations of supernovae and neutron star mergers. Our previous two papers tabulated the EOS at over 180,000 grid points in the temperature range $T$ = 0 to 80 MeV, the density range $n_B$ = 10${}^{-8}$ to 1.6 fm${}^{-3}$, and the proton fraction range $Y_P$ = 0 to 0.56. In this paper we combine these data points using a suitable interpolation scheme to generate a single equation of state table on a finer grid. This table is thermodynamically consistent and conserves entropy during adiabatic compression tests. We present various thermodynamic quantities and the composition of matter in the new EOS, along with several comparisons with existing EOS tables. Our equation of state table is available for download.

Published version. Updated eos tables in our website

References in corpus (6)

• Theory of Core-Collapse Supernovae
• A New Equation of State for Astrophysical Simulations
• Influence of light nuclei on neutrino-driven supernova outflows
• Equation of State of Dense Matter from a density dependent relativistic mean field model
• The Neutrino Response of Low-Density Neutron Matter from the Virial Expansion
• Equation of State of nuclear matter in a Virial expansion of nucleons and nuclei

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