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

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

扫码查看
原文链接
  • NETL
  • NSTL
  • 万方数据
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 cos-mological model.In this study,we used four high-precision time-delayed strong gravitational lensing(SGL)sys-tems provided by H0LiCOW 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 dif-ferent models.All results confirm the validity of DDR at lσ confidence level.Additionally,Monte Carlo simula-tions based on the future LSST survey indicated that the precision of DDR could reach the 10-2 level with 100 SGL systems.

distance duality relationstrong gravitational lensingtime-delay distance

唐丽、林海南、吴英

展开 >

Department of Math and Physics,Mianyang Teachers'College,Mianyang 621000,China

Research Center of Computational 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 401331,China

展开 >

2025

10.1088/1674-1137/ad83a8

中国物理C(英文版)
中国物理学会　中国科学院高能物理研究所　中国科学院近代物理研究所

中国物理C(英文版)

影响因子：0.347
ISSN：1674-1137
年,卷(期)：2025.49(1)