Gravitational Lensing Analysis

This lecture covers the analysis of gravitational lensing in galaxy clusters, focusing on the mass distribution, dark matter haloes, and individual galaxies. The instructor discusses the methodology used to identify multiple images of galaxies, the total mass models, and the precision achieved in the mass model of the galaxy cluster MACSJ0416.1-2403. The study goal is to understand the total matter distribution, use gravitational lensing as a telescope, and explore the geometry of the Universe. The results show an improved mass precision and amplification accuracy, leading to a high-precision mass model of the massive cluster lenses.