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arXiv 2203.05924astro-ph.COastro-ph.GA
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高精度光谱学和天体测量学的实时宇宙学

Real-time Cosmology with High Precision Spectroscopy and Astrometry

Sukanya Chakrabarti, Anthony H. Gonzalez, Steve Eikenberry, David Erskine, Mustapha Ishak, Alex Kim, Eric Linder, Andrei Nomerotski, Michael Pierce, Anze Slosar… 展开作者

Sukanya Chakrabarti, Anthony H. Gonzalez, Steve Eikenberry, David Erskine, Mustapha Ishak, Alex Kim, Eric Linder, Andrei Nomerotski, Michael Pierce, Anze Slosar, Paul Stankus, Yu-Dai Tsai

摘要:

物理学和天体物理学的突破往往是由技术进步推动的,最近对引力波的探测就是这样一个例子。本白皮书重点介绍了新一代精密、准确和稳定的天文仪器如何改进天体测量和光谱测量,以解决我们这个时代的两个基本谜团--暗能量和暗物质--并探索时空的本质。仪器现在正处于基于红移(宇宙红移漂移)和极其精确的加速度,天体物理源位置(天体测量)和角度(宇宙视差)的时间序列测量的新宇宙学测量的尖端。这使得宇宙的基本框架(广义相对论的弗里德曼方程和宇宙膨胀是否在物理上加速)及其内容(暗能量演化和暗物质行为)的测试成为可能,同时也锚定了宇宙距离尺度($H_0$)。

英文摘要:

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 ($H_0$).

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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