Analytical representations of unified equations of state of neutron-star matter

Details Analytical representations of unified equations of state of neutron-star matter Analytical representations of unified equations of state of neutron-star matter

2004-08-18

arxiv.org/abs/astro-ph/0408324v2

Astron.Astrophys. 428 (2004) 191-197

Astronomy and Astrophysics

Astrophysics

7 pages, 5 figures, 3 tables, accepted by A&A. In v.2, auxiliary fits (15) and (16) are corrected

Scientific paper

10.1051/0004-6361:20041722

Analytical representations are derived for two equations of state (EOSs) of neutron-star matter: FPS and SLy. Each of these EOSs is unified, that is, it describes the crust and the core of a neutron star using the same physical model. Two versions of the EOS parametrization are considered. In the first one, pressure and mass density are given as functions of the baryon density. In the second version, pressure, mass density, and baryon density are given as functions of the pseudo-enthalpy, which makes this representation particularly useful for 2-D calculations of stationary rotating configurations of neutron stars.

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