A lensed radio jet at milli-arcsecond resolution II: Constraints on fuzzy dark matter from an extended gravitational arc

Devon M. Powell, Simona Vegetti, J. P. McKean +4

Using a single gravitational lens system observed at $\lesssim 5$ milli-arcsecond resolution with very long baseline interferometry (VLBI), we place a lower bound on the mass of the…