Hy Trac-Dept of Physics - Carnegie Mellon University

Hy Trac

Assistant Professor, Physics

Office: Wean Hall 8307
Phone: 412-268-8351
Fax: 412-681-0648


Ph.D., University of Toronto


I am a theoretical and computational cosmologist and am interested in cosmic evolution and structure formation. My research often utilizes numerical simulations run on supercomputers. I develop and apply N-body, hydrodynamic, and radiative transfer codes to simulate how structures form and evolve in the expanding Universe. I am interested in complex problems involving the dark matter, cosmic gas, stars, galaxies, and galaxy clusters in the Universe. I am actively working on understanding how the first generation of stars, galaxies, and quasars reionized the Universe by the time it was a billion years old. As a member of the Atacama Cosmology Telescope (ACT) project, I work on discovering and interpreting massive galaxy clusters. As a member of the Sloan Digital Sky Survey project, I work on using quasars as background sources to study the intervening intergalactic gas. I also collaborate with people in the Machine Learning department to apply modern ML algorithms to improve data analysis and numerical simulations in cosmology and astrophysics.

Selected Publications