超子相互作用对原中子星转动惯量的影响

IF 0.6 4区物理与天体物理 Q4 ASTRONOMY & ASTROPHYSICS

Astrophysics Pub Date : 2023-04-12 DOI:10.1007/s10511-023-09772-4

Xian-Feng Zhao

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引用次数: 0

摘要

用相对论平均场理论研究了超子相互作用对原中子星(PSR J0740+6620、PSR J0348+0432、PSR J1614-2230和PSR J0737-3039A)转动惯量的影响。考虑超子间的相互作用，PNS的质量M相对于相同的半径R减小，能量密度ε相对于相同的压力p增大，转动惯量I相对于相同的中心能量密度εc减小。在粒子质量约束下，考虑到超子间的相互作用，粒子质量越大，粒子半径和转动惯量减小越大，能量密度和压力增大越大。对于较小的pns，影响可以忽略不计。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Effect of the Interaction Between Hyperons on the Moment of Inertia of the Proto Neutron Stars

Effect of the interaction between hyperons on the moment of inertia of proto neutron stars (PNSs) PSR J0740+6620, PSR J0348+0432, PSR J1614-2230 and PSR J0737-3039A is examined by means of relativistic mean field theory. Taking into account the interaction between hyperons, the mass M of the PNS decreases with respect to the same radius R, the energy density ε increases with respect to the same pressure p, and the moment of inertia I of the PNS decreases with respect to the same central energy density ε_c . Under the constraint of the mass of the PNS, considering the interaction between hyperons, the larger the mass of the PNS, the more the radius and moment of inertia of the PNS decrease, while the more energy density and pressure increase. For smaller PNSs, the effect can be negligible.

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来源期刊

Astrophysics 地学天文-天文与天体物理

CiteScore

0.90

自引率

20.00%

发文量

审稿时长

6-12 weeks

期刊介绍： Astrophysics (Ap) is a peer-reviewed scientific journal which publishes research in theoretical and observational astrophysics. Founded by V.A.Ambartsumian in 1965 Astrophysics is one of the international astronomy journals. The journal covers space astrophysics, stellar and galactic evolution, solar physics, stellar and planetary atmospheres, interstellar matter. Additional subjects include chemical composition and internal structure of stars, quasars and pulsars, developments in modern cosmology and radiative transfer.