宇宙卡尺：利用下一代引力波探测器进行精确而准确的中子星半径测量
Cosmic Calipers: Precise and Accurate Neutron Star Radius Measurements with Next-Generation Gravitational Wave Detectors
AI总结：
本研究通过贝叶斯推断对比当前与下一代引力波探测器测量中子星半径的能力，发现下一代设施可在大部分质量范围内将半径误差控制在约5%以内，且天体物理动机的质量先验对单个中子星半径测量影响不显著。
摘要：
来自并合双中子星的引力波携带了关于其天体物理性质的特征信息，包括质量和潮汐形变率，这些信息是推断其半径所必需的。在本研究中，我们使用贝叶斯推断来量化在当前引力波探测器升级以及下一代观测设施（如爱因斯坦望远镜和宇宙探索者）条件下半径可被推断的精度。我们为一组合理的状态方程赋予证据，然后将这些证据用作权重以获得半径后验分布。我们发现，先验选择和观测信号的响度限制了当前探测器推断半径的精度和准确性。相比之下，下一代观测设施能够在大部分质量范围内精确而准确地分辨半径，对于软状态方程和硬状态方程，误差均在约5%以内。我们还探讨了中子星质量先验的选择如何影响推断出的质量并可能影响半径测量，发现选择天体物理动机驱动的先验并不会显著影响单个中子星的半径测量。
英文摘要：
Gravitational waves from merging binary neutron stars carry characteristic information about their astrophysical properties, including masses and tidal deformabilities, that are needed to infer their radii. In this study, we use Bayesian inference to quantify the precision with which radius can inferred with upgrades in the current gravitational wave detectors and next-generation observatories such as the Einstein Telescope and Cosmic Explorer. We assign evidences for a set of plausible equations of state, which are then used as weights to obtain radius posteriors. We find that prior choices and the loudness of observed signals limit the precision and accuracy of inferred radii by current detectors. In contrast, next-generation observatories can resolve the radius precisely and accurately, across most of the mass range to within $\lesssim 5\%$ for both soft and stiff equations of state. We also explore how the choice of the neutron star mass prior can influence the inferred masses and potentially affect radii measurements, finding that choosing an astrophysically motivated prior does not notably impact an individual neutron star's radius measurements.
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。
