论文标题
从宇宙资源管理器的重力波标准警报器观察宇宙参数估计的预测
Forecast for cosmological parameter estimation with gravitational-wave standard siren observation from the Cosmic Explorer
论文作者
论文摘要
第三代地面重力波（GW）探测器宇宙探索者（CE）计划在2030年代开始观察。在本文中，我们对CE的引力波标准警报器进行了宇宙学参数估计的预测。我们使用CE的模拟GW标准警笛数据来限制$λ$ CDM，$ W $ CDM和CPL型号。我们将模拟的GW数据与当前的宇宙学电磁观测结合在一起，包括来自普朗克的最新宇宙微波背景各向异性数据，光学重子声学振荡测量以及IA型超新星观测（Pantheon汇编）以进行分析。我们发现，CE的未来标准警报器观察将在很大程度上改善宇宙学参数估计，因为未来的GW标准警报器数据可以很好地打破各种宇宙学参数之间的光学观察结果产生的变性。我们还发现，CE在宇宙学参数上的约束能力略好于同一型GW检测器Einstein望远镜。此外，还讨论了CE的GW标准警笛观察与SKA的21 cm发射观察之间的协同作用。
The third-generation ground-based gravitational-wave (GW) detector, Cosmic Explorer (CE), is scheduled to start its observation in the 2030s. In this paper, we make a forecast for cosmological parameter estimation with gravitational-wave standard siren observation from the CE. We use the simulated GW standard siren data of CE to constrain the $Λ$CDM, $w$CDM and CPL models. We combine the simulated GW data with the current cosmological electromagnetic observations including the latest cosmic microwave background anisotropies data from Planck, the optical baryon acoustic oscillation measurements, and the type Ia supernovae observation (Pantheon compilation) to do the analysis. We find that the future standard siren observation from CE will improve the cosmological parameter estimation to a great extent, since the future GW standard siren data can well break the degeneracies generated by the optical observations between various cosmological parameters. We also find that the CE's constraining capability on the cosmological parameters is slightly better than that of the same-type GW detector, the Einstein Telescope. In addition, the synergy between the GW standard siren observation from CE and the 21 cm emission observation from SKA is also discussed.
