Description
The Epoch of Reionization and Cosmic Dawn, eras marked by the
emergence of the first galaxies, represent the final frontiers of observational
cosmology. This talk examines the immense potential of unifying a variety of
observational probes to reconstruct the evolutionary history of the early Universe. It
highlights the powerful synergy between the Cosmic Microwave Background,
quasar absorption spectra, the unprecedented high-redshift galaxy populations
revealed by JWST, and the anticipated 21 cm signal. Particular emphasis is placed
on the need for consistent modelling of galaxies and the intergalactic medium to
robustly interpret these multi-messenger datasets. The talk also explores the
critical role of advanced statistical frameworks, including machine-learning-driven
inference techniques, in breaking long-standing parameter degeneracies. Finally, it
discusses how these combined probes can not only constrain astrophysical
mechanisms but also provide sensitive tests of the standard Lambda-CDM
paradigm and potential new physics at high redshift.
