{"paper":{"title":"Four binary microlenses with directly measured masses","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":["astro-ph.EP","astro-ph.GA","astro-ph.SR"],"primary_cat":"astro-ph.IM","authors_text":"Aikaterini Vandorou, Akihiko Fukui, Andrew Gould, Andrzej Udalski, Aparna Bhattacharya, Byeong-Gon Park, Cheongho Han, Chung-Uk Lee, Cl\\'ement Ranc, Daisuke Suzuki, David P. Bennett, Doeon Kim, Dong-Jin Kim, Dong-Joo Lee, Fumio Abe, Greg Olmschenk, Hibiki Yama, Hongjing Yang, Ian A. Bond, Igor Soszy\\'nski, In-Gu Shin, Jan Skowron, Jennifer C. Yee, Kansuke Nunota, Krzysztof A. Rybicki, Krzysztof Ulaczyk, Kyu-Ha Hwang, Marcin Kiraga, Marcin Wrona, Mariusz Gromadzki, Mateusz J. Mr\\'oz, Michael D. Albrow, Micha{\\l} Jaroszy\\'nski, Micha{\\l} K. Szyma\\'nski, Naoki Koshimoto, Nicholas J. Rattenbury, Patryk Iwanek, Paul J. Tristram, Pawe{\\l} Pietrukowicz, Przemek Mr\\'oz, Rados{\\l}aw Poleski, Richard W. Pogge, Ryusei Hamada, Sang-Mok Cha, Sean K. Terry, Seung-Lee Kim, Shota Miyazaki, Stela Ishitani Silva, Sun-Ju Chung, Szymon Koz{\\l}owski, Takahiro Sumi, Tutumi Nagai, Weicheng Zang, Yasushi Muraki, Yongseok Lee, Yoon-Hyun Ryu, Yossi Shvartzvald, Youn Kil Jung, Yuki Hirao, Yuki Satoh, Yutaka Matsubara","submitted_at":"2025-08-14T21:26:40Z","abstract_excerpt":"We investigated binary lens events from the 2022-2024 microlensing surveys, aiming to identify events suitable for lens mass measurements. We focused on two key light curve features: distinct caustic spikes with resolved crossings for measuring the angular Einstein radius ($\\theta_{\\rm E}$), and long durations enabling microlens-parallax ($\\pi_{\\rm E}$) measurements. Four events met these criteria: KMT-2022-BLG-1479, KMT-2023-BLG-0932, OGLE-2024-BLG-0142, and KMT-2024-BLG-1309. We estimated the angular Einstein radius by combining the normalized source radius measured from modeling the resolve"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2508.11079","kind":"arxiv","version":1},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2508.11079/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"references":{"count":0,"sample":[],"resolved_work":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","internal_anchors":0},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"}