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Nagakane, M. Pawlak, N. J. Rattenbury, N. Koshimoto, P. Evans, P. J. Tristram, P. Mroz, P. Pietrukowicz, R. Barry, R. Poleski, R. W. Pogge, S.-J. Chung, S. Kozlowski, S.-L. Kim, S.-M. Cha, T. Sumi, T. Yamada, W. Zhu, Y. Asakura, Y. Hirao, Y.-H. Ryu, Y. Itow, Y. K. Jung, Y. Lee, Y. Matsubara, Y. Muraki","submitted_at":"2017-05-03T17:48:14Z","abstract_excerpt":"We report the analysis of the first resolved caustic-crossing binary-source microlensing event OGLE-2016-BLG-1003. The event is densely covered by the round-the-clock observations of three surveys. The light curve is characterized by two nested caustic-crossing features, which is unusual for typical caustic-crossing perturbations. From the modeling of the light curve, we find that the anomaly is produced by a binary source passing over a caustic formed by a binary lens. 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