Cosmic distance duality relation in light of time-delayed strong gravitational lensing  

作　　者：Li Tang Hai-Nan Lin Ying Wu 唐丽;林海南;吴英(Department of Math and Physics,Mianyang Teachers College,Mianyang 621000,China;Department of Physics,Chongqing University,Chongqing 401331,China;Chongqing Key Laboratory for Strongly Coupled Physics,Chongqing University,Chongqing 41331,China;Research Center of Computational Physics,Mianyang Teachers'College,Mianyang 621000,China)

机构地区：[1]Department of Math and Physics,Mianyang Teachers College,Mianyang 621000,China [2]Department of Physics,Chongqing University,Chongqing 401331,China [3]Chongqing Key Laboratory for Strongly Coupled Physics,Chongqing University,Chongqing 41331,China [4]Research Center of Computational Physics,Mianyang Teachers'College,Mianyang 621000,China

出　　处：《Chinese Physics C》2025年第1期331-339,共9页中国物理C(英文版)

基　　金：Supported by the National Natural Science Fund of China(12275034,12347101);the Fundamental Research Funds for the Central Universities of China(2024CDJXY-022)。

摘　　要：The cosmic distance duality relation(DDR),which links the angular-diameter and luminosity distances,is a cornerstone in modern cosmology.Any deviation from DDR may indicate new physics beyond the standard cosmological model.In this study,we used four high-precision time-delayed strong gravitational lensing(SGL)systems provided by HOLiCOW to test the validity of DDR.To this end,we directly compared the angular-diameter distances from these SGL systems with the luminosity distances from the latest Pantheon+compilation of SNe Ia.To reduce the statistical errors arising from redshift matching,a Gaussian process method was applied to reconstruct the distance-redshift relation from the Pantheon+dataset.We parameterized the possible violation of DDR in three different models.All results confirm the validity of DDR at 1σ confidence level.Additionally,Monte Carlo simulations based on the future LSST survey indicated that the precision of DDR could reach the 10^(-2) level with 100 SGL systems.

关 键 词：distance duality relation strong gravitational lensing time-delay distance 

分 类 号：P142.84[天文地球—天体物理]