{"paper":{"title":"Astro2020 Science White Paper - Quasar Microlensing: Revolutionizing our Understanding of Quasar Structure and Dynamics","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.IM"],"primary_cat":"astro-ph.GA","authors_text":"Anna Nierenberg (Jet Propulsion Laboratory), California Institute of Technology), Carina Fian (Instituto de Astrofisica de Canarias, Chelsea Macleod (Center for Astrophysics, Christopher W Morgan (US Naval Academy), Damien Hutsemekers (University of Liege), David Pooley (Trinity University), Departamento de Astrofisica, Dominique Sluse (STAR institute, Evencio Mediavilla (Instituto de Astrofisica de Canarias), George Chartas (College of Charleston), Georgios Vernardos (University of Groningen), Geraint Lewis (University of Sydney), Harvard University), Joachim Wambsganss (University of Heidelberg), Jorge Jimenez-Vicente (Univ. de Granada), Karina Rojas (Ecole Polytechnique Federale de Lausanne, Kathleen Labrie (Gemini Observatory), Leonidas Moustakas (Jet Propulsion Laboratory, LSSTC Data Science Fellow), Matthew Cornachione (US Naval Academy), Matthew O'Dowd (City University of New York, Rachel Webster (University of Melbourne), Suk Yee Yong (University of Melbourne), the American Museum of Natural History), Timo Anguita (Universidad Andres Bello), Universidad de La Laguna), University of Liege), Veronica Motta (Universidad de Valparaiso), Xinyu Dai (University of Oklahoma)","submitted_at":"2019-04-29T21:55:30Z","abstract_excerpt":"Microlensing by stars within distant galaxies acting as strong gravitational lenses of multiply-imaged quasars, provides a unique and direct measurement of the internal structure of the lensed quasar on nano-arcsecond scales. The measurement relies on the temporal variation of high-magnification caustic crossings which vary on timescales of days to years. Multiwavelength observations provide information from distinct emission regions in the quasar. Through monitoring of these strong gravitational lenses, a full tomographic view can emerge with Astronomical-Unit scale resolution. Work to date h"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1904.12967","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":""},"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"}