The supermassive black hole coincident with the luminous transient ASASSN-15lh
The supermassive black hole coincident with the luminous transient ASASSN-15lh
The progenitors of astronomical transients are linked to a specific stellar population and galactic environment, and observing their host galaxies hence constrains the physical nature of the transient itself. Here, we use imaging from the Hubble Space Telescope, and spatially-resolved, medium resolution spectroscopy from the Very Large Telescope obtained with …