Mass, radius, and composition of the outer crust of nonaccreting cold neutron stars

Details Mass, radius, and composition of the outer crust of nonaccreting cold neutron stars Mass, radius, and composition of the outer crust of nonaccreting cold neutron stars

2007-07-18

arxiv.org/abs/0707.2740v1

J.Phys.G35:014043,2008

Astronomy and Astrophysics

Astrophysics

5 pages, 2 figures, submitted to J. Phys. G, part of the proceedings of the Nuclear Physics in Astrophysics III conference in

Scientific paper

10.1088/0954-3899/35/1/014043

The properties and composition of the outer crust of nonaccreting cold neutron stars are studied by applying the model of Baym, Pethick, and Sutherland, which was extended by including higher order corrections of the atomic binding, screening, exchange and zero-point energy. The most recent experimental nuclear data from the atomic mass table of Audi, Wapstra, and Thibault from 2003 is used. Extrapolation to the drip line is utilized by various state-of-the-art theoretical nuclear models (finite range droplet, relativistic nuclear field and non-relativistic Skyrme Hartree-Fock parameterizations). The different nuclear models are compared with respect to the mass and radius of the outer crust for different neutron star configurations and the nuclear compositions of the outer crust.

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