Gilbert Holder



  • Senior Fellow
  • Gravity & the Extreme Universe


  • University of Illinois at Urbana–Champaign
Department of Physics


  • United States


PhD (Astronomy and Astrophysics), University of Chicago
MSc (Physics), Queen's University
BSc (Astrophysics), Queen's University


Gilbert Holder’s research focuses on cosmology. He is particularly interested in the formation of structure in the universe, such as superclusters, clusters of galaxies, galaxies, stars and planets.

He searches for the observable imprints of the processes that formed these structures, through scattering effects (such as the Sunyaev-Zeldovich effect) and gravitational distortions (of distant background objects or of the microwave background fluctuations). Areas of study include galaxy clusters, large angle CMB anisotropy and gravitational lensing.


Carl Sagan Outstanding Teacher Award, 2001

Relevant Publications

Hairman, Z., and G. Holder. "The reionization history at high redshifts. I. Physical models and new constraints from cosmic microwave background polarization." Astrophys. J. 595, no. 1 (2009): 1.