Department of Astronomy and Astrophysics and the College
Joshua Frieman’s research activities span theoretical and observational cosmology, including the early universe, large-scale structure, gravitational lensing, supernovae, dark matter, and dark energy. The co-author of over 500 publications, he was a co-founder and director of the Dark Energy Survey, an international collaboration of 500 scientists from 25 institutions in seven countries that carried out a six-year survey to map the universe using a 570-megapixel camera it built for a four-meter telescope in Chile. The Dark Energy Survey has catalogued several hundred million galaxies and discovered several thousand supernovae, yielding state-of-the-art measurements of cosmological parameters. Frieman previously played leadership roles in the Sloan Digital Sky Survey (SDSS) and led the SDSS-II Supernova Survey.
He is a fellow of the American Academy of Arts and Sciences, the American Association for the Advancement of Science, the American Astronomical Society, and the American Physical Society, and an honorary fellow of the Royal Astronomical Society.
Frieman received his BS in physics from Stanford University and his PhD in physics from the University of Chicago. He is currently a member of the Kavli Institute for Cosmological Physics at the University of Chicago and also holds a joint appointment at Fermi National Accelerator Laboratory, where he has been a distinguished scientist and most recently served as head of the Particle Physics Division.