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arXiv 2602.11809astro-ph.HE
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地壳-核心连接程序对中子星潮汐变形性的影响

Impact of crust-core connection procedures on the tidal deformability of neutron stars

School of Physics, Nankai University(南开大学物理学院)

Junbo Pang, Hong Shen, Jinniu Hu

AI总结:

本文研究了不同地壳-核心连接方法对中子星潮汐变形性的影响,发现直接连接方法导致不确定性显著增加,而分段和过渡方法更稳定。

摘要:

我们研究了地壳-核心连接程序对各种中子星性质的影响,尤其是对潮汐变形性的影响。我们考虑了三种类型的连接程序来处理方程在地壳-核心过渡处的不统一性:(1)直接连接程序,(2)过渡连接程序,(3)分段方法。我们的结果表明,中子星的质量-半径关系几乎不受连接程序细节的影响。然而,中子星的潮汐变形性对地壳-核心连接程序敏感。潮汐变形性与引力波测量密切相关。对于一个典型的1.4M太阳质量中子星,不同连接程序对潮汐变形性Λ1.4的不确定性可能超过20%。我们发现直接连接程序会导致潮汐变形性不确定性显著增加,而分段方法和过渡连接程序则提供相对稳定的结果。

英文摘要:

We study the impact of crust-core connection procedures on various neutron-star properties, especially on the tidal deformability. We consider three types of connection procedures to treat the discontinuity in a nonunified equation of state around the crust-core transition: (1) the direct connection procedure, (2) the crossover connection procedure, and (3) the segmented method. Our results indicate that the mass-radius relations of neutron stars are almost unaffected by the details of the connection procedure. However, the tidal deformabilities of neutron stars are sensitive to the crust-core connection procedures. The tidal deformability is closely related to gravitational-wave measurements. For a canonical 1.4$M_\odot$ neutron star, uncertainties in the tidal deformability $Λ_{1.4}$ from different connection procedures can exceed 20\%. We find that the direct connection procedure yields significantly larger uncertainties in the tidal deformability, while the segmented method and crossover connection procedure provide relatively stable results.

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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