#Microlensing measurement of a quasar’s accretion disk
“#Microlensing measurement of a quasar’s accretion disk” The Hubble image of a single quasar, WFI2026-4536, gravitationally lensed and imaged into four subimages. Panel (a) shows the image, and panel (b) shows the image after the quasar components have been subtracted, revealing the faint foreground lensing galaxy (“G”). Astronomers have used light variations between the quasar’s…