New equation of state for astrophysical simulations

Journal Article · Tue Mar 15 00:00:00 EDT 2011 · Physical Review. C, Nuclear Physics

DOI:https://doi.org/10.1103/PHYSREVC.83.035802· OSTI ID:21499529

Shen, G; Horowitz, C J; Teige, S ^[1]

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1. Nuclear Theory Center and Department of Physics, Indiana University, Bloomington, Indiana 47405 (United States)

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=0-80 MeV, the density range n{sub B}=10{sup -8}-1.6 fm{sup -3}, and the proton fraction range Y{sub P}=0-0.56. In this paper we combine these data points using a suitable interpolation scheme to generate a single EOS 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 EOS table is available for download.

• OSTI ID: 21499529
• Journal Information: Physical Review. C, Nuclear Physics, Vol. 83, Issue 3; Other Information: DOI: 10.1103/PhysRevC.83.035802; (c) 2011 American Institute of Physics; ISSN 0556-2813
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
79 ASTROPHYSICS
COSMOLOGY AND ASTRONOMY
ASTROPHYSICS
COMPARATIVE EVALUATIONS
COMPRESSION
DENSITY
ENTROPY
EQUATIONS OF STATE
INTERPOLATION
MEV RANGE
NEUTRON STARS
NUCLEAR MATTER
PROTONS
SIMULATION
SUPERNOVAE
TEMPERATURE RANGE
BARYONS
BINARY STARS
ELEMENTARY PARTICLES
ENERGY RANGE
EQUATIONS
ERUPTIVE VARIABLE STARS
EVALUATION
FERMIONS
HADRONS
MATHEMATICAL SOLUTIONS
MATTER
NUCLEONS
NUMERICAL SOLUTION
PHYSICAL PROPERTIES
PHYSICS
STARS
THERMODYNAMIC PROPERTIES
VARIABLE STARS