Determining the spatial origin of X-ray and optical emission in the $z=3.1$ strongly lensed radio-quiet quasar GraL J065904.1+162909 to hundreds of parsecs

Julia Sisk-Reynes, Daniel Schwartz, Anna Barnacka +2

We perform milliarcsecond X-ray astrometry of the quadruply lensed radio-quiet quasar GraL J065904.1+162909 (J0659). This $z=3.083$ quasar is lensed into four images and was disc…