论文标题
时间延迟宇宙学：用强力镜头测量哈勃常数和其他宇宙学参数
Time-Delay Cosmography: Measuring the Hubble Constant and other cosmological parameters with strong gravitational lensing
论文作者
论文摘要
乘透镜源经历了光子到来的相对时间延迟。此效果可用于测量绝对距离和哈勃常数（$ h_0 $），并被称为时间延迟宇宙学。该方法与当地距离梯子和早期宇宙物理学无关，并提供了$ H_0 $的精确和竞争性测量。通过即将到来的观测值，时间延迟的宇宙学可以提供1％的精度测量$ H_0 $，并且可以决定目前报告的“ Hubble张力”。本文介绍了理论背景和当前技术，用于时间延迟的掌握研究和哈勃常数的测量。本文描述了分析的不同组成部分和减轻它们的策略的挑战和系统。当前的测量值将在上下文中讨论，并列出了未来预期数据集的机会。
Multiply lensed sources experience a relative time delay in the arrival of photons. This effect can be used to measure absolute distances and the Hubble constant ($H_0$) and is known as time-delay cosmography. The methodology is independent of the local distance ladder and early-universe physics and provides a precise and competitive measurement of $H_0$. With upcoming observatories, time-delay cosmography can provide a 1% precision measurement of $H_0$ and can decisively shed light on the current reported 'Hubble tension'. This paper presents the theoretical background and the current techniques applied for time-delay cosmographic studies and the measurement of the Hubble constant. The paper describes the challenges and systematics in the different components of the analysis and strategies to mitigate them. The current measurements are discussed in context and the opportunities with the anticipated data sets in the future are laid out.
