Fig. 2.
Illustration of generating light curves for a lensed quasar without its (lensed) host galaxy. Left: positions of the four multiple images (A, B, C, and D) and the lens galaxy (cross). Top right: mock quasar light curve. Bottom right: the lensed light curves of the four multiple images in the left panel, for the period marked by the blue band in the top right panel.
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