论文标题
使用重力波用重子振荡来探测宇宙学
Probing Cosmology with Baryon Acoustic Oscillations using Gravitational Waves
论文作者
论文摘要
预计第三代重力波（GW）探测器，例如爱因斯坦望远镜（ET）或宇宙探险家（CE）在宇宙学中将起重要作用。借助3G检测器，我们将能够探测大规模结构（LSS）功能，例如Baryon声学振荡（BAO），星系偏置等。我们通过使用3G GW检测器来探索进行精确宇宙学的可能性。 Through simulations, we show that with a 3G detector network, by probing the angular BAO scale using purely GW observations, we can constrain the Hubble constant for the standard model of cosmology ($Λ$CDM) with $90\%$ credible regions as $H_0 = 59.4^{+ 33.9}_{-17.7} 〜\ Mathrm {Km}〜\ Mathrm {S}^{ - 1}〜\ Mathrm {MPC}^{ - 1} $。当与Galaxy Surveys的BAO测量结合使用时，我们表明它可用于约束各种宇宙学模型，例如用于状态的暗能量方程的参数化模型。我们还展示了在3G时代使用GW观测值的BAO测量的宇宙学约束将如何与光谱调查相同的互补。
The third-generation (3G) gravitational wave (GW) detectors such as the Einstein telescope (ET) or Cosmic Explorer (CE) are expected to play an important role in cosmology. With the help of 3G detectors, we will be able to probe large-scale structure (LSS) features such as baryon acoustic oscillations (BAO), galaxy bias, etc. We explore the possibility to do precision cosmology, with the 3G GW detectors by measuring the angular BAO scale using localization volumes of compact binary merger events. Through simulations, we show that with a 3G detector network, by probing the angular BAO scale using purely GW observations, we can constrain the Hubble constant for the standard model of cosmology ($Λ$CDM) with $90\%$ credible regions as $H_0 = 59.4^{+ 33.9}_{-17.7} ~\mathrm{km}~\mathrm{s}^{-1}~\mathrm{Mpc}^{-1}$. When combined with BAO measurements from galaxy surveys, we show that it can be used to constrain various models of cosmology such as parametrized models for dark energy equations of state. We also show how cosmological constraints using BAO measurements from GW observations in the 3G era will complement the same from spectroscopic surveys.
