Using simulated Tianqin gravitational wave data and electromagnetic wave data to study the coincidence problem and Hubble tension problem  

作　　者：张家伟 刁井旺 潘宇 陈明月 李瑾 Jia-Wei Zhang;Jing-Wang Diao;Yu Pan;Ming-Yue Chen;Jin Li(Department of Physics,Chongqing University of Science and Technology,Chongqing 401331,China;School of Science,Chongqing University of Posts and Telecommunications,Chongqing 400065,China;Department of physics,Chongqing University,Chongqing 400044,China;Department of Physics and Chongqing Key Laboratory for Strongly Coupled Physics,Chongqing University,Chongqing 401331,China)

机构地区：[1]Department of Physics,Chongqing University of Science and Technology,Chongqing 401331,China [2]School of Science,Chongqing University of Posts and Telecommunications,Chongqing 400065,China [3]Department of physics,Chongqing University,Chongqing 400044,China [4]Department of Physics and Chongqing Key Laboratory for Strongly Coupled Physics,Chongqing University,Chongqing 401331,China

出　　处：《Chinese Physics C》2023年第3期232-238,共7页中国物理C（英文版）

基　　金：Supported in part by the National Natural Science Foundation of China(12105032,12147102);Jia-Wei Zhang was supported by the Natural Science Foundation of China(12275036);the Natural Science Foundation of Chongqing(cstc2021jcyjmsxmX0681,cstc2018jcyjAX0713,cstc2021jcyj-msxmX0553);the Science and Technology Research Program of Chongqing Municipal Education Commission(KJQN202001541);the Research Foundation of Chongqing University of Science and Technology(CK2016Z03);This study was also supported by the Graduate Research and Innovation Foundation of Chongqing,China(CYS21327).

摘　　要：In this study,we used electromagnetic wave data(H0LiCOW,H(z),SNe)and gravitational wave data(Tianqin)to constrain the interacting dark energy(IDE)model and investigate the Hubble tension and coincidence problems.By combining these four types of data(Tianqin+HQLiCOW+SNe+H(z)),we obtained the following para-meter values with a confidence interval of 1σ:Ω_(m)=0.36+0.18,ω_(x)=-1.29^(+0.61)_(-0.23)+0.61,ξ=3.15^(+0.36)_(-1.1),and H_(0)=70.04+0.42 kms^(-1) Mpc^(-1).According to our results,the best value of Ho shows that the Hubble tension problem can be al-leviated to some extent.In addition,the center value of ξ+3ω_(x)=-0.72_(-1.19)^(2.19)(1σ)indicates that the coincidence problem is slightly alleviated.However,ξ+3ω_(x)=0 is still within the 1σ error range,which indicates that the ACDM model is still the model in best agreement with the observational data at present.Finally,we compared the constraint results of the electromagnetic and gravitational waves on the model parameters and found that the con-straint effect of electromagnetic wave data on model parameters is better than that of simulated Tianqin gravitational wave data.

关 键 词：cosmological parameters Hubble tension coincidence problem 

分 类 号：P142.84[天文地球—天体物理]