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Gilbert Holder Cosmologist

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

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



Senior Fellow Gravity & the Extreme Universe


University of Illinois at Urbana-ChampaignDepartment of Physics


PhD (Astronomy and Astrophysics) University of Chicago

M.Sc. (Physics) Queen's University

B.Sc. (Astrophysics) Queen's University


United States

Ideas Related to Gilbert Holder

Symposium Debrief | Cosmology & Gravity

Symposium Brief: Untangling the Cosmos

On May 17, 2017, CIFAR, in partnership with the Ontario Science Centre, held a day-long symposium called “Untangling the Cosmos:...

Announcement | Cosmology & Gravity

CIFAR researchers honoured for breakthroughs

CIFAR researchers have earned two of the top 10 spots in Physics World magazine’s list of 2013 breakthroughs, for their...

News | Cosmology & Gravity

International team discovers that some galaxies are farther away than previously believed

In the early Universe, there were 1,000 times more star-forming galaxies than today. By measuring how far these starburst galaxies...

News | Cosmology & Gravity

Research team, including CIFAR Junior Fellow, discovers massive galaxy cluster that is rapidly spewing stars

Keith Vanderlinde (McGill), Junior Fellow in CIFAR’s Cosmology and Gravity program and Scholars Matthew Dobbs and Gilbert Holder at McGill University were part...