New equation of state for astrophysical simulations

被引：158

作者：

Shen, G. ^{[1
,2
]}

Horowitz, C. J. ^{[1
,2
]}

Teige, S. ^{[3
]}

机构：

[1] Indiana Univ, Ctr Nucl Theory, Bloomington, IN 47405 USA

[2] Indiana Univ, Dept Phys, Bloomington, IN 47405 USA

[3] Indiana Univ, Univ Informat Technol Serv, Bloomington, IN 47408 USA

来源：

PHYSICAL REVIEW C | 2011年 / 83卷 / 03期

关键词：

NUCLEAR-MATTER; GROUND-STATE; SUPERNOVA;

D O I：

10.1103/PhysRevC.83.035802

中图分类号：

O57 [原子核物理学、高能物理学];

学科分类号：

070202 ;

摘要：

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(B) = 10(-8)-1.6 fm(-3), and the proton fraction range Y-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.

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