利用未来引力波探测器网络从完整双中子星并合过程中揭示超核密度物质信息
Unraveling information about supranuclear-dense matter from the complete binary neutron star coalescence process using future gravitational-wave detector networks
AI总结：
本文提出一种新的解析频域模型，完整描述双中子星旋近-并合-并合后引力波信号，并评估未来探测器网络对揭示超核密度物质状态方程信息的潜力。
摘要：
引力波为我们提供了一种非凡的工具来研究中子星内部的物质。特别是，并合后信号探测了极端温度和密度区域，将有助于揭示超核密度物质的状态方程信息。尽管当前探测器对双中子星并合前发出的信号最为敏感，但现有探测器的升级和下一代探测器的建设将使并合后探测成为可能。为此，我们提出了一种新的解析频域模型，用于描述双中子星系统发出的旋近-并合-并合后信号。信号的旋近和并合部分使用IMRPhenomD_NRTidalv2建模，我们使用三参数洛伦兹函数描述并合后的主发射峰，采用两种不同方法：一种保持洛伦兹参数自由，另一种通过准普适关系对其进行建模。我们在参数估计分析中测试了我们新的完整波形模型的性能，研究了从我们开发的模型和注入数值相对论波形获得的模拟信号。我们研究了不同探测器网络的性能，以确定未来探测器将为我们分析带来的改进。我们考虑了Advanced LIGO+和Advanced Virgo+、KAGRA以及LIGO-India。我们还研究了像NEMO这样在千赫兹波段具有高灵敏度的探测器可能产生的影响，最后我们将这些结果与使用第三代探测器——爱因斯坦望远镜和宇宙探索者——获得的结果进行了比较。
英文摘要：
Gravitational waves provide us with an extraordinary tool to study the matter inside neutron stars. In particular, the postmerger signal probes an extreme temperature and density regime and will help reveal information about the equation of state of supranuclear-dense matter. Although current detectors are most sensitive to the signal emitted by binary neutron stars before the merger, the upgrades of existing detectors and the construction of the next generation of detectors will make postmerger detections feasible. For this purpose, we present a new analytical, frequency-domain model for the inspiral-merger-postmerger signal emitted by binary neutron stars systems. The inspiral and merger part of the signals are modeled with IMRPhenomD_NRTidalv2, and we describe the main emission peak of postmerger with a three-parameter Lorentzian, using two different approaches: one in which the Lorentzian parameters are kept free, and one in which we model them via quasi-universal relations. We test the performance of our new complete waveform model in parameter estimation analyses, studying simulated signals obtained from both our developed model and by injecting numerical relativity waveforms. We investigate the performance of different detector networks to determine the improvement that future detectors will bring to our analysis. We consider Advanced LIGO+ and Advanced Virgo+, KAGRA, and LIGO-India. We also study the possible impact of a detector with high sensitivity in the kilohertz band like NEMO, and finally we compare these results to the ones we obtain with third-generation detectors, the Einstein Telescope and the Cosmic Explorer.
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。
