Rethinking Cosmology - The High-Redshift Universe as a Cosmological Laboratory - Day 5 Session 3

Explore cutting-edge cosmological research through this panel discussion from the Rethinking Cosmology Conference at Raman Research Institute. Delve into three comprehensive presentations examining the high-redshift universe as a cosmological laboratory, beginning with Tirthankar Roy Choudhury's analysis of JWST tensions and their implications for the upcoming SKA era. Discover how Girish Kulkarni connects cosmic reionization processes from the last neutral islands to dark sector physics, demonstrating how reionization serves as a powerful lever for understanding cosmology. Learn about Saurabh Singh's work on 21-cm constraints that provide crucial insights into the high-redshift universe. Gain insights into current challenges facing the standard ΛCDM cosmological model, including the Hubble tension exceeding 5σ statistical significance and violations of the Cosmological Principle. Understand how upcoming observatories like the Vera Rubin Observatory, DESI, Euclid, SPHEREx, JWST, and SKA will revolutionize cosmological observations with unprecedented data volumes. Examine the interface between cosmology and fundamental physics while exploring new theoretical and observational frontiers that may lead beyond the current phenomenological model toward deeper understanding of dark matter, dark energy, and cosmic evolution.