On the moment of inertia of a proto neutron star

ZHAO Xian-Feng; ZHANG Hua; JIA Huan-Yu

doi:10.1088/1674-1137/34/10/007

Chinese Physics C> 2010, Vol. 34> Issue(10) : 1587-1592 DOI: 10.1088/1674-1137/34/10/007

On the moment of inertia of a proto neutron star

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Abstract：
The influences of σ^* and Φ mesons, temperature and coupling constants of nucleons on the moment of inertia of the proto neutron star (PNS) are examined in the framework of relativistic mean field theory for the baryon octet {n, p, Λ, Σ^－, Σ⁰, Σ⁺, Ξ^－, Ξ⁰} system. It is found that, compared with that without considering σ^* and Φ mesons, the moment of inertia decreases. It is also found that the higher the temperature, the larger the incompressibility and symmetry energy coefficient, and the larger the moment of inertia of a PNS. The influence of temperature and coupling constants of the nucleons on the moment of inertia of a PNS is larger than that of the σ^* and Φ mesons.

References

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ZHAO Xian-Feng, ZHANG Hua and JIA Huan-Yu. On the moment of inertia of a proto neutron star[J]. Chinese Physics C, 2010, 34(10): 1587-1592. doi: 10.1088/1674-1137/34/10/007

ZHAO Xian-Feng, ZHANG Hua and JIA Huan-Yu. On the moment of inertia of a proto neutron star[J]. Chinese Physics C, 2010, 34(10): 1587-1592. doi: 10.1088/1674-1137/34/10/007 shu

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Received: 2009-01-16
Revised: 2010-04-10

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沈阳化工大学材料科学与工程学院沈阳 110142

On the moment of inertia of a proto neutron star

Corresponding author: ZHAO Xian-Feng,

Received Date: 2009-01-16
Accepted Date: 2010-04-10
Available Online: 2010-10-05

Abstract:

The influences of σ^* and Φ mesons, temperature and coupling constants of nucleons on the moment of inertia of the proto neutron star (PNS) are examined in the framework of relativistic mean field theory for the baryon octet {n, p, Λ, Σ^－, Σ⁰, Σ⁺, Ξ^－, Ξ⁰} system. It is found that, compared with that without considering σ^* and Φ mesons, the moment of inertia decreases. It is also found that the higher the temperature, the larger the incompressibility and symmetry energy coefficient, and the larger the moment of inertia of a PNS. The influence of temperature and coupling constants of the nucleons on the moment of inertia of a PNS is larger than that of the σ^* and Φ mesons.