论文标题
类星镜头时间是否可以延迟提示在Halos中而不是H0张力中的核心组件？
Could quasar lensing time delays hint to a core component in halos, instead of H0 tension?
论文作者
论文摘要
重力镜片类星体图像之间测量的时间延迟探测到源镜头系统的角直径距离和镜头的质量密度曲线的组合。测量此类系统的观察活动报告了Hubble参数H0的确定，该H0根据宇宙微波背景（CMB）和大规模结构（LSS）显示出明显的张力，并具有独立的确定。我们表明，晶状体质量模型表现出芯成分，并与尖端共存，在镜头模型参数空间中探测归化方向，是近似的质量板转换。宇宙学分析尚未考虑这种镜头模型家族。一旦添加到模型中，综合误差预算应依赖于出色的运动学不确定性。我们建议，与尖端共存的核心成分可以使H0的镜头测量值与CMB/LSS值一致。
The time delay measured between the images of gravitationally lensed quasars probes a combination of the angular diameter distance to the source-lens system and the mass density profile of the lens. Observational campaigns to measure such systems have reported a determination of the Hubble parameter H0 that shows significant tension with independent determination based on the cosmic microwave background (CMB) and large scale structure (LSS). We show that lens mass models that exhibit a cored component, coexisting with a cusp, probe a degenerate direction in the lens model parameter space, being an approximate mass sheet transformation. This family of lens models has not been considered by the cosmographic analyses. Once added to the model, the cosmographic error budget should become dependent on stellar kinematics uncertainties. We propose that a core component coexisting with a cusp could bring the lensing measurements of H0 to accord with the CMB/LSS value.
