核物质状态方程效应对磁化中子星壳层爆发后二维热演化的影响
Nuclear equation-of-state effects on the two-dimensional post-outburst thermal evolution of magnetized neutron-star crusts
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中文总结 AI 辅助
本文通过二维模拟研究核状态方程对磁化中子星壳层爆发后热演化的影响，发现EOS效应非简单光度重标，并建立可复现的敏感性基准。
中文摘要 AI 辅助
我们展示了一项受控的二维研究，探讨核物质状态方程（EOS）效应对磁化中子星壳层爆发后热弛豫的影响。在固定的引力质量 $1.4 M_{\odot}$ 下，使用特定于EOS的TOV背景、壳层组成和输运输入，在相同的磁场和加热方案下演化六个EOS模型。我们的分析将自洽的多EOS演化与BSk族分解相结合，该分解分离了结构、微观物理和相互作用贡献，并辅以接受步能量账本和数值敏感性预算。模型在早期响应以及表面、壳层和内边界之间热量的后期重新分配方面均显示出依赖于EOS的变化；在约 $10^2$ 天附近的光变曲线交叉表明，EOS效应并非简单的光度重新标度。到1000天时，累积表面光子能量分数差异小于一个百分点，而内部能量分配的差异则大得多。更新的敏感性测试表明，晚期光度差异和最大的峰值对比度超过了相应的BSk24数值敏感性尺度，而最小的早期峰值对比度仍不太可靠地分辨。这些计算旨在作为可复现的EOS敏感性基准，而非观测拟合。
英文摘要
We present a controlled two-dimensional study of nuclear-equation-of-state (EOS) effects on the post-outburst thermal relaxation of magnetized neutron-star crusts. Six EOS models are evolved at a fixed gravitational mass of $1.4 M_{\odot}$ with EOS-specific TOV backgrounds, crust compositions, and transport inputs under identical magnetic-field and heating prescriptions. Our analysis combines self-consistent multi-EOS evolution with a BSk-family factorization that separates structural, microphysical, and interaction contributions, together with an accepted-step energy ledger and a numerical-sensitivity budget. The models show EOS-dependent changes in both the early response and the later redistribution of heat between the surface, crust, and inner boundary; light-curve crossings near $10^2$ days demonstrate that the EOS effect is not a simple luminosity rescaling. By 1000 days the cumulative surface-photon energy fraction differs by less than one percentage point, whereas the internal energy partition differs much more strongly. The updated sensitivity tests show that the late-time luminosity differences and the largest peak contrasts exceed the corresponding BSk24 numerical-sensitivity scales, while the smallest early peak contrast remains less securely resolved. The calculations are intended as a reproducible EOS-sensitivity benchmark rather than an observational fit.
发表机构
- State Key Laboratory of Radio Astronomy and Technology, Xinjiang Astronomical Observatory, Chinese Academy of Sciences（中国科学院新疆天文台射电天文与技术重点实验室）
- University of Chinese Academy of Sciences（中国科学院大学）
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