Per Vidar Barth LiljeView profile
Professor
Per Vidar Barth Lilje is a Professor at the University of Oslo , affiliated with the Institute of Theoretical Astrophysics . His research focuses on Cosmology , Large-Scale Structures , and Cosmic Microwave Background (CMB) , with leadership in the Norwegian participation in the Euclid space mission. Academic Background: M.Sc., University of Oslo, 1985 Ph.D., University of Cambridge, 1988 Postdoctoral research at Canadian Institute for Theoretical Astrophysics (1988–1989) NORDITA Fellow (1989–1992) Research Interests: Dr. Lilje investigates the universe's large-scale structure, cosmic background radiation, and space-based observational techniques. His work spans modified gravity theories, galaxy evolution, and Euclid mission data analysis, including intracluster light and high-redshift galaxy detection. Recent Publications: His 2025 articles with the Euclid Collaboration explore photometric pipelines, galaxy morphology, and relativistic distortions in clustering analysis, reflecting his role in advancing cosmological simulations and observational frameworks. Leadership & Collaborations: As former Head of the Institute of Theoretical Astrophysics (2005–2012, 2017–2024), he contributes to ESA Science Programme Committee and journals. He is a member of the Nordic Optical Telescope project and collaborates on Euclid ’s structure formation studies.








