{"paper":{"title":"The MACHO Project: Microlensing Results from 5.7 Years of LMC Observations","license":"","headline":"","cross_cats":[],"primary_cat":"astro-ph","authors_text":"A.B. Tomaney, A.C. Becker, A.J. Drake, B.A. Peterson, C.A. Nelson, C.W. Stubbs, D. Minniti, D.P. Bennett, D.R. Alves, D. Welch, K.C. Freeman, K. Griest, K.H. Cook, M. Geha, M.J. Lehner, M.R. Pratt, N. Dalal, P.J. Quinn, P. Popowski, R.A. Allsman, S.L. Marshall, The MACHO Collaboration: C. Alcock, T.S. Axelrod, T. Vandehei, W. Sutherland","submitted_at":"2000-01-15T22:28:48Z","abstract_excerpt":"We report on our search for microlensing towards the Large Magellanic Cloud (LMC). Analysis of 5.7 years of photometry on 11.9 million stars in the LMC reveals 13 - 17 microlensing events. This is significantly more than the $\\sim$ 2 to 4 events expected from lensing by known stellar populations. The timescales ($\\that$) of the events range from 34 to 230 days. We estimate the microlensing optical depth towards the LMC from events with $2 < \\that < 400$ days to be 1.2 ^{+0.4}_ {-0.3} \\ten{-7}$, with an additional 20% to 30% of systematic error. The spatial distribution of events is mildly inco"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/0001272","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/astro-ph/0001272/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"}