Fig. 5.
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3 × 3 arcsec2 region before (top row) and after (bottom row) PSF subtraction. The two left columns show Q 1218+0832 and the two right columns show another point source that is about 50% brighter than Q 1218+0832. The is no significant excess emission outside of 0.3 arcsec from the quasar (marked by a circle in the lower row).
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