Remolina Gonzalez, J.; Sharon, K.; Reed, B.; Li, N.; Mahler, G.; Bleem, L.; Gladders, M.; Niemiec, A.; Acebron, A.; Child, H.
In the era of large surveys, yielding thousands of galaxy clusters, efficient mass proxies at all scales are necessary in order to fully utilize clusters as cosmological probes. At the cores of strong lensing clusters, the Einstein radius can be turned into a mass estimate. This efficient method has been routinely used in literature, in lieu of detailed mass models; however, its scatter, assumed to be similar to 30%, has not yet been quantified. Here, we assess this method by testing it against