论文标题
具有高精度光谱和天文标准的实时宇宙学
Real-time Cosmology with High Precision Spectroscopy and Astrometry
论文作者
论文摘要
物理和天体物理学的突破通常是由技术进步驱动的，最近发现引力波就是这样的例子。这份白皮书着重于新一代精确，准确和稳定的天文仪器的改进的天文和光谱测量如何解决我们这个时代的两个基本谜团 - 深色能量和深色物质 - 并探测时空的本质。现在，仪器正在基于红移（宇宙红移漂移）和极为精确的时间序列测量，天体物理源位置（星体）和角度（宇宙视差）的极端时间序列测量。这些允许测试宇宙的基本框架（一般相对论的弗里德曼方程，以及宇宙扩张在物理上是否正在加速）及其内容（暗能量演化和暗物质行为），同时还锚定宇宙距离量表（$ h_0 $）。
Breakthroughs in physics and astrophysics are often driven by technological advances, with the recent detection of gravitational waves being one such example. This white paper focuses upon how improved astrometric and spectroscopic measurements from a new generation of precise, accurate, and stable astronomical instrumentation can address two of the fundamental mysteries of our time -- dark energy and dark matter -- and probe the nature of spacetime. Instrumentation is now on the cusp of enabling new cosmological measurements based on redshifts (cosmic redshift drift) and extremely precise time-series measurements of accelerations, astrophysical source positions (astrometry), and angles (cosmic parallax). These allow tests of the fundamental framework of the universe (the Friedmann equations of general relativity and whether cosmic expansion is physically accelerating) and its contents (dark energy evolution and dark matter behavior), while also anchoring the cosmic distance scale ($H_0$).
