典型文献
On Dark Gravitational Wave Standard Sirens as Cosmological Inference and Forecasting the Constraint on Hubble Constant using Binary Black Holes Detected by Deci-hertz Observatory
文献摘要：
Gravitational wave(GW)signals from compact binary coalescences can be used as standard sirens to constrain cosmological parameters if their redshift can be measured independently by electromagnetic signals.However,mergers of stellar binary black holes(BBHs)may not have electromagnetic counterparts and thus have no direct redshift measurements.These dark sirens may be still used to statistically constrain cosmological parameters by combining their GW measured luminosity distances and localization with deep redshift surveys of galaxies around it.We investigate this dark siren method to constrain cosmological parameters in detail by using mock BBH and galaxy samples.We find that the Hubble constant can be constrained well with an accuracy(＜)1％with a few tens or more of BBH mergers at redshift up to 1 if GW observations can provide accurate estimates of their luminosity distance(with relative error of(＜)0.01)and localization((＜)0.1 deg2),though the constraint may be significantly biased if the luminosity distance and localization errors are larger.We also introduce a simple method to correct this bias and find it is valid when the luminosity distance and localization errors are modestly large.We further generate mock BBH samples,according to current constraints on BBH merger rate and the distributions of BBH properties,and find that the Deci-hertz Observatory(DO)in a half year observation period may detect about one hundred BBHs with signal-to-noise ratio ρ(＞)30,relative luminosity distance error(＜)0.02 and localization error(＜)0.01 deg2.By applying the dark standard siren method,we find that the Hubble constant can be constrained to the～0.1％-1％level using these DO BBHs,an accuracy comparable to the constraints obtained by using electromagnetic observations in the near future,thus it may provide insight into the Hubble tension.We also demonstrate that the constraint on the Hubble constant applying this dark siren method is robust and does not depend on the choice of the prior for the properties of BBH host galaxies.
文献关键词：
中图分类号：
作者姓名：
Ju Chen;Changshuo Yan;Youjun Lu;Yuetong Zhao;Junqiang Ge
作者机构：
National Astronomical Observatories,Chinese Academy of Sciences,20A Datun Road,Beijing 100101,China;University of Chinese Academy of Sciences,19A Yuquan Road,Beijing 100049,China
文献出处：
引用格式：
[1]Ju Chen;Changshuo Yan;Youjun Lu;Yuetong Zhao;Junqiang Ge-.On Dark Gravitational Wave Standard Sirens as Cosmological Inference and Forecasting the Constraint on Hubble Constant using Binary Black Holes Detected by Deci-hertz Observatory)[J].天文和天体物理学研究,2022(01):215-228
A类：
Sirens,Cosmological,Detected,Deci,coalescences,BBHs,deg2,modestly
B类：
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AB值：
0.393692
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