Extended Data Fig. 1: Hyper Suprime-Cam deep images of the field around J 012555.11−012925.00.
From: Quasar radiation transforms the gas in a merging companion galaxy
a, e, the original image. b, f, quasar’s point spread function (PSF) subtracted image. c, g, model of additional sources. d, h, residuals. The top and bottom panels correspond to g and r filters, respectively. The white cross and circle indicate the position of the quasar and the FWHM of the point spread function, respectively.
