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arXiv 1503.07835gr-qc
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缓慢旋转的均匀质量的再研究

Slowly rotating homogeneous masses revisited

Borja Reina

摘要:

在广义相对论微扰理论中,在给定正压状态方程的情况下,Hartle慢转恒星模型被广泛用于计算慢转恒星的二级平衡位形。最近一项基于现代扰动匹配理论的研究表明,必须对模型进行修正,以适应非旋转恒星表面能量密度不消失的状态方程。特别是,原始模型中给出的质量变化表达式,即当选择扰动以使旋转和非旋转配置的压力一致时产生的对质量的贡献,必须用附加项进行修改。在本文中,修正的质量变化计算的情况下,恒定密度的恒星。

英文摘要:

Hartle's model for slowly rotating stars has been extensively used to compute equilibrium configurations of slowly rotating stars to second order in perturbation theory in General Relativity, given a barotropic equation of state (EOS). A recent study based on the modern theory of perturbed matchings show that the model must be amended to accommodate EOS's in which the energy density does not vanish at the surface of the non rotating star. In particular, the expression for the change in mass given in the original model, i.e. a contribution to the mass that arises when the perturbations are chosen so that the pressure of the rotating and non rotating configurations agree, must be modified with an additional term. In this paper, the amended change in mass is calculated for the case of constant density stars.

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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