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arXiv 1206.3675gr-qc
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远平行引力中的中子星

Neutron Stars in Teleparallel Gravity

S. C. Ulhoa, P. M. M. Rocha

摘要:

在本文中,我们处理的中子星,这是一个完美的流体模型,在远程平行相当于广义相对论的上下文中。我们使用数值模拟来找到场的角动量和源的角动量之间的关系。一旦向代码输入状态方程、中心能量密度以及极半径和赤道半径之比,就可以为数值模拟所达到的每一颗稳定恒星建立这样的关系。我们还发现了一个政权的重力角动量和转动惯量(以及角速度的流体)之间的线性关系是有效的。我们给出了引力能的空间分布,并表明它与源的角速度的平方成线性关系。

英文摘要:

In this paper we deal with neutron stars, which are described by a perfect fluid model, in the context of the teleparallel equivalent of general relativity. We use numerical simulations to find the relationship between the angular momentum of the field and the angular momentum of the source. Such a relation was established for each stable star reached by the numerical simulation once the code is fed with an equation of state, the central energy density and the ratio between polar and equatorial radii. We also find a regime where linear relation between gravitational angular momentum and moment of inertia (as well as angular velocity of the fluid) is valid. We give the spatial distribution of the gravitational energy and show that it has a linear dependence with the squared angular velocity of the source.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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