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This 16-minute conference talk by Prasun Dutta explores the challenges of detecting redshifted 21-cm emission signals and the systematic approaches needed to uncover them. Presented at the "Radio Cosmology and Continuum Observations in the SKA Era: A Synergic View" program at the International Centre for Theoretical Sciences, the talk addresses key aspects of radio cosmology research in preparation for the Square Kilometre Array (SKA) telescope. Learn about the technical methodologies and calibration techniques essential for distinguishing faint cosmic signals from noise and interference. The presentation is part of a comprehensive two-week program bringing together experts in radio cosmology and continuum science, designed to foster collaboration and train the next generation of researchers ahead of the SKA's 2027 operational launch.
