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Explores the classification and statistics of AGN, black holes, unified AGN model, variability, megamasers, orbital motion measurement, and time-delay cosmography.
Explores experimental methods at high-energy colliders, focusing on the CMS detector at CERN's LHC and the reconstruction of stable particles and jets.
Explores the recalibration of the cosmic distance ladder using accurate photometry and Gaia parallaxes, addressing challenges and potential refinements.