Strong lensing time-delay cosmography in the 2020s
Strong lensing time-delay cosmography in the 2020s
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DOI：
10.1007/s00159-022-00145-y
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发表时间：
2022-11
期刊：
影响因子：
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通讯作者：
T. Treu;S. Suyu;P. Marshall
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文献类型：
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作者：
T. Treu;S. Suyu;P. Marshall
多重成像的时变源可以用来测量作为红移函数的绝对距离，从而确定宇宙学参数，主要是哈勃常数H。在截至2020年的20年里，通过一系列观测和概念上的突破，这种所谓的时间延迟宇宙学已经达到了足够的精度，足以成为当前早期和晚期宇宙H测定之间的“哈勃张力”辩论中的重要独立声音。21世纪20年代有望在时延宇宙学方面取得重大进展，因为新的和即将进行的调查将发现大量透镜，而且跟踪和分析能力将大大提高。在这篇综述中，在简要总结了该方法的基础和最新进展后，我们概述了十年的机会和需要克服的挑战，以满足1%的精度和准确度确定H从时间延迟宇宙学的目标。
Multiply imaged time-variable sources can be used to measure absolute distances as a function of redshifts and thus determine cosmological parameters, chiefly the Hubble Constant H. In the two decades up to 2020, through a number of observational and conceptual breakthroughs, this so-called time-delay cosmography has reached a precision sufficient to be an important independent voice in the current “Hubble tension” debate between early- and late-universe determinations of H. The 2020s promise to deliver major advances in time-delay cosmography, owing to the large number of lenses to be discovered by new and upcoming surveys and the vastly improved capabilities for follow-up and analysis. In this review, after a brief summary of the foundations of the method and recent advances, we outline the opportunities for the decade and the challenges that will need to be overcome in order to meet the goal of the determination of Hfrom time-delay cosmography with 1% precision and accuracy.