He is known for his theory of "holographic noise", which holds that holographic principle may imply quantum fluctuations in spatial position that would lead to apparent background noise or holographic noise measurable at gravitational wave detectors, in particular GEO 600.
He attended Palos Verdes High School. Hogan earned in 1976 his B.A. in astronomy, with highest honors, from Harvard University, and his Ph.D. in astronomy from King's College at the University of Cambridge, England in 1980.
He was an Enrico Fermi Fellow at the University of Chicago from 1980 to 1981, a National Science Foundation Postdoctoral Fellow at Cambridge the years 1981 to 1982 and a Bantrell Prize Fellow in Theoretical Astrophysics at the California Institute of Technology from 1982 to 1985.
He won the Alexander von Humboldt Research Award and an Alfred P. Sloan Foundation Fellowship. He is the author of The Little Book of the Big Bang published in 1998 by Springer-Verlag, which was translated into six languages.
- 2007: Gruber Prize in Cosmology (co-recipient with High-z Supernova Search Team)
- 2015: Breakthrough Prize in Fundamental Physics, shared with Brian P. Schmidt, Adam Riess, and the High-Z Supernova Search Team.