2020ApJ...890..148U

We present a weak-lensing analysis of X-ray galaxy groups and clusters selected from the XMM-XXL survey using the first-year data from the Hyper Suprime-Cam (HSC) Subaru Strategic Program. Our joint weak-lensing and X-ray analysis focuses on 136 spectroscopically confirmed X-ray-selected systems at 0.031 <= z <= 1.033 detected in the 25 deg² XXL-N region, which largely overlaps with the HSC-XMM field. With high-quality HSC weak-lensing data, we characterize the mass distributions of individual clusters and establish the concentration-mass (c-M) relation for the XXL sample, by accounting for selection bias and statistical effects and marginalizing over the remaining mass calibration uncertainty. We find the mass-trend parameter of the c-M relation to be β=-0.07±0.28 and the normalization to be c₂₀₀=4.8±1.0(stat)±0.8(syst) at M₂₀₀=10¹⁴h^–1M_☉ and z = 0.3. We find no statistical evidence for redshift evolution. Our weak-lensing results are in excellent agreement with dark-matter-only c-M relations calibrated for recent ΛCDM cosmologies. The level of intrinsic scatter in c₂₀₀ is constrained as σ (lnc₂₀₀)< 24 % (99.7 % CL), which is smaller than predicted for the full population of ΛCDM halos. This is likely caused in part by the X-ray selection bias in terms of the cool-core or relaxation state. We determine the temperature-mass (T_X-M₅₀₀) relation for a subset of 105 XXL clusters that have both measured HSC lensing masses and X-ray temperatures. The resulting T_X-M₅₀₀ relation is consistent with the self-similar prediction. Our T_X-M₅₀₀ relation agrees with the XXL DR1 results at group scales but has a slightly steeper mass trend, implying a smaller mass scale in the cluster regime. The overall offset in the T_X-M₅₀₀ relation is at the ∼1.5σ level, corresponding to a mean mass offset of 34 % ±20 % . We also provide bias-corrected, weak-lensing-calibrated M₂₀₀ and M₅₀₀ mass estimates of individual XXL clusters based on their measured X-ray temperatures.