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Fig. 2


Histogram of the angular Einstein radius θE relative to the angular size of the source stars θS. Histograms are shown for ground-based I-band, ground-based K-band, and space-based H-band observations from top to bottom. Red, blue, and green histograms in each plot correspond to Jupiter-, Neptune-, and Earth-mass FFPs, respectively. The vertical line shows where θE = θS, indicating where finite source effects become dominant. The dashed histogram in each lens mass shows the distribution if a point source is assumed for all events, and the solid histograms are the distributions when the finite source effect is included.

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