Recent results from DESI and precision cosmology

by Prof. Heejong Seo (Ohio University)

Tuesday 17 Jun 2025, 16:00 → 17:30 Asia/Seoul

Room 1423 (KIAS)

Title: Recent results from DESI and precision cosmology

Speaker: Heejong Seo (Ohio U.)

Abstract: The Dark Energy Spectroscopic Instrument (DESI) collaboration is conducting a five-year redshift survey of 40 million extra-galactic sources over 14,000 square degrees of the northern sky up to a redshift of 4 with the Mayall 4-meter telescope at Kitt Peak National Laboratory.  One of its primary goals is to measure the cosmic expansion history precisely and accurately through the measurements of baryon acoustic oscillations (BAO) to understand the nature of dark energy. In this talk, I will present the cosmological results of the DESI First and the Third Year data using the distributions of galaxies and quasars over the redshift range of 0.1-4.