Fig. 2
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0.2–2.3 keV images (left) and 0.6–2.3 keV background maps divided by exposure maps (right) for the ES0102 (upper) and A3391 (lower) fields. The same as in Fig. 1, the green lines display the subsurvey regions (Sect. 4.5). The A3391 photon image shows a bright circle at the center, which corresponds to a long-exposure pointing-mode observation (300014; see Table 2).
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