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Explore the cutting-edge field of weak gravitational lensing and its applications to modern cosmological research in this 59-minute astrophysics seminar. Discover how weak lensing serves as a powerful tool for investigating cosmic puzzles including dark energy evolution, structure formation, and supermassive black hole feedback mechanisms. Learn about advanced statistical methods, particularly higher-order statistics and three-point correlations, that enhance our understanding of systematic uncertainties and improve cosmological parameter constraints. Examine recent findings from the Dark Energy Survey and cosmic microwave background measurements that are reshaping our view of the universe. Delve into innovative machine learning approaches, with special focus on mass map reconstruction using diffusion models, and understand how these computational techniques are revolutionizing astronomical data analysis and cosmological inference.
