Steven Thomas Gratton

Dr. Steven Thomas Gratton is a Professor in the Department of Relativity and Gravitation at the Faculty of Mathematics, University of Cambridge. His research focuses on cosmology, astrophysics, and gravitational physics, with a particular emphasis on analyzing cosmic microwave background (CMB) data and understanding the early universe through models like inflationary cosmology. He has contributed extensively to the Planck satellite collaboration, working on parameter estimation, data analysis techniques, and interpreting observational evidence for cosmic parameters such as spatial curvature and dark matter composition.

Gratton's work bridges theoretical and observational cosmology, addressing questions about the universe's geometry, dark energy evolution, and gravitational lensing effects. He has developed computational methods for cosmological studies, including GPU-accelerated algorithms for data analysis. His research has been published in leading journals such as Astronomy & Astrophysics, Physical Review D, and Monthly Notices of the Royal Astronomical Society.

His recent publications highlight advancements in likelihood pipelines for CMB data, model comparisons using nested datasets, and the implications of Planck results for cosmological parameters. Gratton's contributions to eternal inflation theory and quantum cosmology further underscore his interdisciplinary approach to understanding fundamental cosmological questions.