LEE Khee-Gan

LEE Khee-Gan is a faculty member in the Department of Physics at The University of Tokyo. Their research focuses on astrophysics and cosmology, with an emphasis on the cosmic web and intergalactic medium. They utilize techniques such as Lyman-alpha forest tomography, Bayesian field-level inference, and forward-modeling to reconstruct 3D matter and baryon fields in the high-redshift Universe. Additionally, they develop methods using dispersion measures of fast radio bursts to trace diffuse baryons in the intergalactic and circumgalactic media. Their work also involves combining spectroscopy with simulation-based modeling to study cosmic structure and galaxy evolution, particularly using the PFS instrument on the Subaru Telescope.

Khee-Gan Lee is an astrophysicist specializing in astronomy, with a focus on large-scale structure and cosmological studies. Their research centers on baryon acoustic oscillations (BAO) and the Lyman-α forest, using data from surveys such as the Sloan Digital Sky Survey (SDSS) and BOSS. Lee's work explores the distribution of matter in the universe, the evolution of the intergalactic medium, and the cosmological implications of these observations. They have contributed to multiple data releases of SDSS, including the ninth, tenth, and eleventh, and have investigated quasar-Lyman α forest cross-correlations. Their studies provide critical insights into the expansion history of the universe and the nature of dark energy.