Radio Interferometric Tools to study the early Universe

Abstract

The Epoch of Reionisation (EoR) is a crucial yet lesser-known period in cosmic history when the first stars and galaxies began to ionise the early Universe. The neutral hydrogen that exists during the EoR allows us to observe it in radio frequencies. This thesis uses novel radio interferometric techniques to detect the EoR, addresses current technical challenges, and lays a foundation to support future EoR observations using the next generation of radio telescopes.