Speaker
Description
The delay between multiple images of a strongly lensed fast radio burst (sl-FRB) can be used to measure cosmological parameters such as the Hubble constant and the Universe's shape with high precision, other than obtaining important information on the lens galaxy. However, detecting sl-FRBs is challenging because their fraction is low and decreases quickly at low redshifts. Moreover, it requires observing at least two images of an sl-FRB separated by O(10) days. We developed detailed simulations to estimate how many sl-FRBs could be detected by upcoming radio facilities with different observing strategies. In particular, we consider targeting known lensed galaxies, long-term observations of the North Celestial Pole, and following up on FRBs showing signs of microlensing in their signal. Our simulations account for important effects such as wave propagation in the lens galaxy and magnification of point sources distributed within the host galaxy. In this talk, I will review our results on the prospects of detecting and using sl-FRBs in the next few years, and how a new radio telescope such as ARGO could be a game-changer in the field.
