论文标题
使用二进制黑洞的引力波的标准 - siren宇宙学
Standard-siren cosmology using gravitational waves from binary black holes
论文作者
论文摘要
引力波天文学为研究宇宙的扩展历史提供了一种独特的新方法。在这项工作中，我们调查了未来重力波观测的影响将对宇宙学产生。爱因斯坦望远镜和宇宙探险家之类的第三代观测站将对宇宙中的所有二元黑洞结合事件敏感。 \ cite {farr2019future}的最新工作指出，恒星质量黑洞人口中的特征破坏了质量红移退化，从而促进了对哈勃参数的精确确定，而无需电磁对应物或宿主星系目录。使用分层贝叶斯推论模型，我们表明，随着爱因斯坦望远镜的一年观察，哈勃常数将测量到$ \ sillesim 1 \％$。我们还表明，该方法可用于在宇宙学模型之间执行贝叶斯模型选择。作为说明性的例子，我们发现可以使用来自爱因斯坦望远镜的两周数据比较$λ$ CDM和RHCT宇宙学模型的决定性陈述。
Gravitational-wave astronomy provides a unique new way to study the expansion history of the Universe. In this work, we investigate the impact future gravitational-wave observatories will have on cosmology. Third-generation observatories like the Einstein Telescope and Cosmic Explorer will be sensitive to essentially all of the binary black hole coalescence events in the Universe. Recent work by \cite{farr2019future} points out that features in the stellar-mass black hole population break the mass-redshift degeneracy, facilitating precise determination of the Hubble parameter without electromagnetic counterparts or host galaxy catalogues. Using a hierarchical Bayesian inference model, we show that with one year of observations by the Einstein Telescope, the Hubble constant will be measured to $\lesssim 1\%$. We also show that this method can be used to perform Bayesian model selection between cosmological models. As an illustrative example, we find that a decisive statement can be made comparing the $Λ$CDM and RHCT cosmological models using two weeks of data from the Einstein Telescope.
