Changhoon Hahn

ChangHoon Hahn develops and applies machine learning methods to study cosmology and galaxy evolution. His research addresses questions about the nature of dark energy, the sum of neutrino masses and how dark matter environments influence the evolution of galaxies. He has been involved in the ongoing Dark Energy Spectroscopic Instrument (DESI) survey, including as co-chair of its Bright Galaxy Survey Working Group, and the Subaru Prime Focus Spectrograph (PFS) survey, for which he served as co-leader in the PFS Cosmology Survey. He has directed a variety of collaborations developing state-of-the-art cosmological simulations and testing galaxy formation models. Before joining UT Austin, Hahn was an assistant professor at the University of Arizona and an assistant astronomer for the Steward Observatory. He previously held positions as a research scholar at Princeton University and as a postdoctoral fellow at Lawrence Berkeley National Laboratory and the University of California, Berkeley Center for Cosmological Physics. He earned his Ph.D. from New York University and his B.S. from Rutgers.