Research

Exploring Quasars and Cosmic Evolution

Discovering Quasars Across Cosmic Time

We identify and characterize quasars across a wide range of redshifts, from the nearby universe to the cosmic dawn, using multi-wavelength data from large-area surveys. This work provides a comprehensive understanding of quasar populations and reveals previously overlooked or rare quasar types.

Tracking Quasar Demographics Over Time

We investigate how the number density, luminosity, and spectral properties of quasars change over billions of years. By constructing quasar luminosity functions and tracking their redshift evolution, we aim to reveal the physical processes driving the rise and fall of quasar activity in the universe.

Co-evolution of Black Holes and Host Galaxies

We study the co-evolution of supermassive black holes and their host galaxies by combining survey data in the infrared, optical, and submillimeter wavelengths. This allows us to trace the mass growth of black holes alongside star formation and structural transformation in galaxies, particularly during key cosmic epochs.