2019 Gruber Cosmology Prize Citation

The Gruber Foundation is pleased to present the 2019 Cosmology Prize to Nicholas Kaiser and Joseph Ivor Silk, for their seminal contributions to the theory of cosmological structure formation and probes of dark matter.

Kaiser provided the mathematical description of primordial density fluctuations that have evolved into large-scale structure, while Silk predicted the eponymous damping scale imprinted on the cosmic microwave background anisotropies. Kaiser pioneered the analysis of weak gravitational lensing of light from distant galaxies by dark matter, while Silk recognized dark matter’s indirect signatures such as antiprotons in cosmic rays and high energy neutrinos from the Sun. Their work has transformed modern cosmology.