论文标题
2020年代及以后的精细结构常数的类星体吸收系统测量方法
Methods for quasar absorption system measurements of the fine structure constant in the 2020s and beyond
论文作者
论文摘要
本文回顾了最近的两个主要发展，这些发展显着改善了从高分辨率类星体光谱法获得的基本常数的宇宙学测量结果。第一个是在高分辨率光谱仪上部署天文激光频率梳子，第二个是基于人工智能方法的光谱分析工具的开发。前者几乎全部消除了先前主导的仪器不确定性来源，而后者则建立了用于测量类星体吸收系统中精细结构常数（$α$）的最佳方法。这些方法可用于由新的意式浓缩仪和未来的安第斯山脉谱图收集的数据，以实现前所未有的精度产生无偏见的$Δα/α$测量。
This article reviews the two major recent developments that significantly improved cosmological measurements of fundamental constants derived from high resolution quasar spectroscopy. The first one is the deployment of astronomical Laser Frequency Combs on high resolution spectrographs and the second one is the development of spectral analysis tools based on Artificial Intelligence methods. The former all but eliminated the previously dominant source of instrumental uncertainty whereas the latter established optimal methods for measuring the fine structure constant ($α$) in quasar absorption systems. The methods can be used on data collected by the new ESPRESSO spectrograph and the future ANDES spectrograph on the Extremely Large Telescope to produce unbiased $Δα/α$ measurements with unprecedented precision.
