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arXiv 0709.2925gr-qcastro-ph
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旋转恒星准简正模研究的新途径

A new approach to the study of quasi-normal modes of rotating stars

V. Ferrari, L. Gualtieri, S. Marassi

摘要:

提出了一种研究旋转相对论恒星准简正模的新方法。振荡被视为扰动的频率域的固定,轴对称的背景描述一个旋转的明星。扰动量展开圆谐函数,得到的二维方程,他们满足集成使用光谱方法在(r,θ)平面。在无穷远的渐近条件,需要找到模式的频率,实施推广的驻波边界条件,通常用于非旋转的情况下。作为测试,该方法被应用于寻找一个缓慢旋转的恒星的准简正模频率。

英文摘要:

We propose a new method to study the quasi-normal modes of rotating relativistic stars. Oscillations are treated as perturbations in the frequency domain of the stationary, axisymmetric background describing a rotating star. The perturbed quantities are expanded in circular harmonics, and the resulting 2D-equations they satisfy are integrated using spectral methods in the (r,theta)-plane. The asymptotic conditions at infinity, needed to find the mode frequencies, are implemented by generalizing the standing wave boundary condition commonly used in the non rotating case. As a test, the method is applied to find the quasi-normal mode frequencies of a slowly rotating star.

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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