Structure and cooling of neutron stars: nuclear pairing and superfluid effects

19th Chilean Physics Symposium 2014

Isaule, F.^1 ; Arellano, H.F.^1

Departamento de Física-FCFM, Universidad de Chile, Avenida Blanco Encalada 2008, Santiago, Chile^1

关键词: Bardeen-Cooper-Schrieffer;    Equation of state;    Hartree-Fock equations;    Hydrostatic equilibrium;    Microscopic description;    Nucleon-nucleon interaction;    Tolman-Oppenheimer-Volkoff equation;    Zero temperatures;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/720/1/012021/pdf
DOI  :  10.1088/1742-6596/720/1/012021

来源: IOP

【 摘 要 】

We investigate structure and cooling properties of neutron stars making use of microscopic descriptions of nuclear matter based on realistic nucleon-nucleon interactions. The equation of state is obtained from solutions of the Brueckner-Hartree-Fock equation for interacting nucleons at zero temperature. The structure aspects are described by the Tolman- Oppenheimer-Volkoff equation for hydrostatic equilibrium of non-rotating stars. Furthermore we have also solved Bardeen-Cooper-Schrieffer (BCS) pairing gap equations to identify superfluid states in neutronic matter. We obtain mass-radius behavior and cooling curves consistent with current understanding.