Astrometric Microlensing

The aim of this project was to determine what percentage of dark matter (DM) is composed of primordial black holes (PBHs), using the concept of astrometric microlensing. ​I surveyed the existing literature on gravitational lensing and implemented the paper- ‘GRB lensing parallax: Closing primordial black hole dark matter mass window’ and analyzed the results obtained from it. I further explored femtolensing and utilized wave-optics effects for generating magnification plots for different PBH masses.