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Galaxy-Galaxy Lensing
This lecture covers the mapping of dark matter distribution using galaxy-galaxy lensing, combining strong and weak lensing techniques. It discusses the accuracy of mass models, the triaxiality of dark matter halos, and the challenges in interpreting lensing signals. The instructor presents results from the COSMOS survey, showcasing the 3D mapping of dark matter and the measurement of galaxy concentrations. The lecture also delves into the mass distribution measurement in galaxy clusters, the modeling strategies, and the importance of including small scales in the analysis.
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