YongdaZhu
Yongda Zhu
I am an Assistant Research Professor at Steward Observatory, University of Arizona. My research focuses on the evolution of the intergalactic medium (IGM) and its connections to galaxies and quasars, particularly during cosmic reionization. I study when and how reionization progressed, how galaxy environments relate to IGM opacity, and how radiation, metals, and outflows from galaxies and supermassive black holes reshape the surrounding cosmic web. I combine quasar absorption spectroscopy from Keck and VLT, JWST galaxy surveys, ALMA observations, and cosmological simulations to connect galaxy-scale physics with the large-scale evolution of the cosmic baryon cycle. I am also developing tools for future wide-field spectroscopic surveys with the Nancy Grace Roman Space Telescope.