arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2109.08145gr-qcastro-ph.HE
收藏

中子星准正规模与潮汐形变的普遍关系

Universal relations between the quasinormal modes of neutron star and tidal deformability

Hajime Sotani, Bharat Kumar

摘要:

中子星物质的状态方程(EOS)无关的普适关系,如果它们存在的话,对于提取中子星的性质是有价值的,这通常取决于状态方程。在这项研究中,我们新推导出预测引力波频率的基本($f$),第一压力($p_1$),和第一时空($w_1$)模式和阻尼率的$f$ -和$w_1$ -模式的函数的无量纲潮汐变形的普遍关系。特别地,对于正则中子星,利用$f$ -模的普适关系,可以以低于$1\%$的精度预测频率和阻尼率。

英文摘要:

Universal relations independently of the equation of state (EOS) for neutron star matter are valuable, if they exist, for extracting the neutron star properties, which generally depend on the EOS. In this study, we newly derive the universal relations predicting the gravitational wave frequencies for the fundamental ($f$), the 1st pressure ($p_1$), and the 1st spacetime ($w_1$) modes and the damping rate for the $f$- and $w_1$-modes as a function of the dimensionless tidal deformability. In particular, with the universal relations for the $f$-modes one can predict the frequencies and damping rate with less than $1\%$ accuracy for canonical neutron 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。

↑