Ponente
Descripción
Strong gravitational lensing at gamma rays is mostly unexplored, with only two confirmed strong lenses emitting at these energies. Despite their rarity, these two objects offer a unique window into high-energy astrophysical sources at high redshifts. The paucity of lenses at gamma rays is primarily due to challenges in detecting and confirming them using standard methods, as the angular resolution to identify multiple images is limited at high energies. Nevertheless, strong lenses display characteristic time delays between multiple images, making time-domain analyses a viable alternative route to investigate these systems and discover new ones.
In this talk, we review the current status of strong gravitational lensing at gamma rays, including the properties of known systems. We highlight recent advances in time-domain techniques and discuss the prospects for future discoveries with current and upcoming gamma-ray observatories, which can potentially open a novel channel for cosmological studies at the highest precision.
