{"paper":{"title":"Using Source Proper Motion to Validate Terrestrial Parallax: OGLE-2019-BLG-1058","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":["astro-ph.EP","astro-ph.GA"],"primary_cat":"astro-ph.SR","authors_text":"Andrew Gould, Andrzej Udalski, Byeong-Gon Park, Cheongho Han, Chung-Uk Lee, Dong-Jin Kim, Dong-Joo Lee, Hyoun-Woo Kim, Igor Soszy\\'nski, In-Gu Shin, Jan Skowron, Jennifer C. Yee, Krzysztof A. Rybicki, Krzysztof Ulaczyk, Kyu-Ha Hwang, Marcin Wrona, Mariusz Gromadzki, Michael D. Albrow, Micha{\\l} K. Szyma\\'nski, Patryk Iwanek, Pawe{\\l} Pietrukowicz, Przemek Mr\\'oz, Radek Poleski, Richard W. Pogge, Sang-Mok Cha, Seung-Lee Kim, Sun-Ju Chung, Szymon Koz{\\l}owski, Weicheng Zang, Yongseok Lee, Yoon-Hyun Ryu, Yossi Shvartzvald, Youn Kil Jung","submitted_at":"2021-08-05T10:18:27Z","abstract_excerpt":"We show that because the conditions for producing terrestrial microlens parallax (TPRX; i.e., a nearby disk lens) will also tend to produce a large lens-source relative proper motion ($\\mu_{\\rm rel}$), source proper motion (${\\boldsymbol\\mu}_{\\rm S}$) measurements in general provide a strong test of TPRX signals, which \\citet{gould13} showed were an important probe of free-floating planet (FFP) candidates. As a case study, we report a single-lens/single-source microlensing event designated as OGLE-2019-BLG-1058. For this event, the short timescale ($\\sim 2.5$ days) and very fast $\\mu_{\\rm rel}"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2108.02499","kind":"arxiv","version":2},"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/2108.02499/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"}