New Constraints on the Cosmic Expansion Rate at Redshift 2.3 from the Lyman-α Forest

Watch a scientific lecture exploring groundbreaking research on measuring cosmic expansion using the Lyman-alpha forest at high redshift. Delve into the first-ever cosmological analysis of the full shape of Lyman-alpha 3D auto-correlation function and its cross-correlation with quasars, presented by Andrei Cuceu from Ohio State University's Center for Cosmology and Astro-Particle Physics. Learn how data from the extended Baryon Oscillation Spectroscopic Survey (eBOSS) DR16 was utilized to measure the Alcock-Paczynski effect, achieving twice the constraining power of traditional BAO analyses. Discover how this innovative approach to analyzing Lyman-alpha forest correlations contributes to improved constraints on the Hubble constant and dark energy, advancing our understanding of large-scale structure in the universe at redshift 2.3.