On building a cluster watch-list for identifying strongly lensed supernovae, gravitational waves and kilonovae

Understand

Motivated by discovering strongly-lensed supernovae, gravitational waves, and kilonovae in the 2020s, we investigate whether to build a watch-list of clusters based on observed cluster properties (i.e.

• lens-plane selection) or on the detectability of strongly-lensed background galaxies (i.e.
• source-plane selection).
• First, we estimate the fraction of high-redshift transient progenitors that reside in galaxies that are themselves too faint to be detected as being strongly-lensed.