The epoch of cosmic dawn remains an unexplored era of our cosmic history. The 21-cm signal is an excellent probe that has the potential to shed light on the physics of cosmic dawn and dark ages.
I work on the various aspects of interpretation and modelling the cosmic dawn 21-cm signal. I have made advances in the computation of Monte Carlo radiative transfer of Lyman-α photons, obtained constraints on primordial black holes as dark matter using Bayesian statistics, made predictions for the galaxy surveys enabled by the James Webb Space Telescope (JWST) as well as contributed to understanding the origin of excess radio background. I have investigated the impact of extragalactic point sources on the astrophysical foregrounds and 21-cm measurements.
Keywords:
21-cm Signal
Intergalactic Medium
Hydrodynamical Simulations
Radiative Transfer
High-redshift Galaxy Surveys
Primordial Black Holes
Extragalactic Point Sources