IISER MOHALI

Abstract: The Epoch of Reionization (EoR) is one of the least understood chapters in the history of our Universe. The formation of the first luminous sources initiated the transition of the cold and neutral intergalactic medium (IGM) into a hot and ionized state.\n\nThe redshifted 21-cm signal from the IGM neutral hydrogen is the most promising probe of the EoR. This directly probes the ionization and thermal states of the IGM during that period. In particular, the distribution of the ionized regions around the first sources introduces scale-dependent features in the spherically averaged EoR 21-cm signal power spectrum.\n\nIn recent times, radio telescopes such as LOFAR, NenuFAR, MWA, and HERA have produced useful upper limits on the 21-cm signal power spectrum which have already started constraining the EoR scenarios. In this seminar, I will talk about the potential of this probe, its observation status, and our present understanding of the Universe's first billion years from this probe.\n\nMeeting ID: 949 8872 5216\nPasscode: 672225\n