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Constraining the Hubble constant to a precision of about 1% using multi-band dark standard siren detections

Science China(Physics,Mechanics & Astronomy) 2022年第5期65卷 114-140页

作者： Liang-Gui Zhu Ling-Hua Xie Yi-Ming Hu Shuai Liu En-Kun Li Nicola R.Napolitano Bai-Tian Tang Jian-Dong Zhang Jianwei Mei School of Physics and Astronomy Sun Yat-sen University(Zhuhai Campus)Zhuhai 519082China MOE Key Laboratory of Tian Qin Mission Tian Qin Research Center for Gravitational PhysicsFrontiers Science Center for Tian QinCNSA Research Center for Gravitational WavesSun Yat-sen University(Zhuhai Campus)Zhuhai 519082China

gravitational wave signal from the inspiral of stellar-mass binary black hole can be used as standard sirens to perform cosmological *** inspiral covers a wide range of frequency bands,from the millihertz band to the audio-band,allowing for detections by both space-borne and ground-based gravitational wave *** this work,we conduct a comprehensive study on the ability to constrain the Hubble constant using the dark standard sirens,or gravitational wave events that lack electromagnetic *** acquire the redshift information,we weight the galaxies within the localization error box with photometric information from several bands and use them as a proxy for the binary black hole *** discover that Tian Qin is expected to constrain the Hubble constant to a precision of roughly 30%through detections of 10 gravitational wave events;in the most optimistic case,the Hubble constant can be constrained to a precision of<10%,assuming Tian Qin I+*** the optimistic case,the multi-detector network of Tian Qin and LISA is capable of constraining the Hubble constant to within 5%*** is worth highlighting that the multi-band network of Tian Qin and Einstein Telescope is capable of constraining the Hubble constant to a precision of about 1%.We conclude that inferring the Hubble constant without bias from photo-z galaxy catalog is achievable,and we also demonstrate self-consistency using the P-P *** the other hand,high-quality spectroscopic redshift information is crucial for improving the estimation precision of Hubble constant.

关键词： gravitational wave standard siren Hubble constant stellar-mass binary black hole photometric luminosity multi-band gravitational wave detection

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