Advancements in cosmology through next-generation (XG) ground-based gravitational wave (GW) observatories will bring in a paradigm shift. We explore the pivotal role that GW standard sirens will play in inferring cosmological parameters with XG observatories, not only achieving exquisite precision but also opening up unprecedented redshifts. We examine the merits and the systematic biases involved in GW standard sirens utilizing binary black holes, binary neutron stars, and neutron star-black hole mergers. Further, we estimate the precision of bright sirens, golden dark sirens, and spectral sirens for these binary coalescences and compare the abilities of various XG observatories (A ♯ , cosmic explorer, Einstein telescope, and their possible networks). When combining different sirens, we find sub-percent precision over more than 10 billion years of cosmic evolution for the Hubble expansion rate H(z). This work presents a broad view of opportunities to precisely measure the cosmic expansion rate, decipher the elusive dark energy and dark matter, and potentially discover new physics in the uncharted Universe with XG GW detectors.

中文翻译：

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使用下一代引力波探测器进行宇宙学


通过下一代（XG）地面引力波（GW）天文台的宇宙学进步将带来范式转变。我们探讨了 GW 标准警报器在 XG 天文台推断宇宙学参数方面将发挥的关键作用，不仅实现了极高的精度，而且还开启了前所未有的红移。我们研究了利用双黑洞、双中子星和中子星黑洞合并的 GW 标准警报器的优点和系统偏差。此外，我们估计了这些双星合并的明亮警报器、金色暗警报器和光谱警报器的精度，并比较了各种 XG 天文台（A♯、宇宙探索者、爱因斯坦望远镜及其可能的网络）的能力。当组合不同的警报器时，我们发现在超过 100 亿年的宇宙演化过程中，哈勃膨胀率 H(z) 的精度低于百分之一。这项工作为精确测量宇宙膨胀率、破译难以捉摸的暗能量和暗物质以及利用 XG GW 探测器在未知宇宙中发现新物理提供了广阔的前景。