{"id":"W7000477791","doi":"","title":"First Sagittarius A* Event Horizon Telescope Results. VII. Polarization of the Ring","year":2024,"lang":"en","type":"article","venue":"UCL Discovery (University College London)","topic":"Astrophysical Phenomena and Observations","field":"Physics and Astronomy","cited_by":0,"is_retracted":false,"has_abstract":true,"ca_institutions":"","funders":"Los Alamos National Laboratory; Oak Ridge National Laboratory; Army Research Office; High Energy Physics; National Key Research and Development Program of China; Agencia Estatal de Investigación; National Institutes of Natural Sciences; Japan Society for the Promotion of Science; National Nuclear Security Administration; Office of Science; Toray Science Foundation; Institut Périmètre de physique théorique; Agencia Nacional de Investigación y Desarrollo; Istituto Nazionale di Fisica Nucleare; Shanghai Jiao Tong University; Centre National de la Recherche Scientifique; Max-Planck-Gesellschaft; Generalitat Valenciana; National Science Foundation; China Postdoctoral Science Foundation; Deutsche Forschungsgemeinschaft; Nederlandse Organisatie voor Wetenschappelijk Onderzoek; Instituto de Astrofísica de Andalucía; Chinese Academy of Sciences; Fundación Bancaria Caixa d'Estalvis i Pensions de Barcelona; Academia Sinica; Junta de Andalucía; Universiteit van Amsterdam; European Southern Observatory; Netherlands eScience Center; John Templeton Foundation; China Scholarship Council; Ministry of Education, Culture, Sports, Science and Technology; Radboud Universiteit; National Research Foundation; Compute Canada; Joint Institute for Computational Fundamental Science; University of Arizona; Smithsonian Institution; International Max Planck Research School for Environmental, Cellular and Molecular Microbiology; European Commission; Leverhulme Trust; National Radio Astronomy Observatory; Fundação de Amparo à Pesquisa do Estado de São Paulo; Vetenskapsrådet; National Natural Science Foundation of China; U.S. Department of Energy; National Astronomical Observatory of Japan; Associated Universities; Consejo Superior de Investigaciones Científicas; University of Chicago; East Asian Core Observatories Association; Gordon and Betty Moore Foundation; Ministerio de Ciencia, Innovación y Universidades; National Aeronautics and Space Administration; Dirección General de Asuntos del Personal Académico, Universidad Nacional Autónoma de México; Ministerio de Ciencia e Innovación; Korea Astronomy and Space Science Institute; Science and Technology Facilities Council; Universiteit Leiden; Flatiron Health","keywords":"Linear polarization; Polarization (electrochemistry); Circular polarization; Supermassive black hole; Polarization in astronomy; Polarimetry; Azimuth; Brewster's angle; Telescope; Dipole","routes":{"ca_aff":false,"ca_fund":true,"ca_venue":false,"about_ca":false,"invisible_to_affiliation_only":true},"retraction":null,"screen":null,"direct_labels":[],"prediction":{"model_version":"metacan-v3-hybrid-931329e0061c","candidate_categories":[],"consensus_categories":[],"category_scores_codex":[0.001635033,0.0006186751,0.0003065913,0.0006656462,0.0005940178,0.001199224,0.0006368494,0.000533207,0.002651102],"category_scores_gemma":[0.001202946,0.0003284227,0.001020792,0.0006157474,0.0002825524,0.0004878255,0.0008079269,0.0004852847,0.002319433],"about_ca_system_candidate":false,"about_ca_system_consensus":false,"about_ca_system_score_codex":0.0007058225,"about_ca_system_score_gemma":0.000479159,"about_ca_topic_candidate":false,"about_ca_topic_consensus":false,"about_ca_topic_score_codex":0.008450412,"about_ca_topic_score_gemma":0.01323732,"domain_scores_codex":[0.9994013,0.00009223217,0.00002718467,0.0001258734,0.0002503367,0.0001030416],"domain_scores_gemma":[0.9987651,0.0001595421,0.0001747722,0.0003917939,0.0003606841,0.0001481737],"domain_codex":null,"domain_gemma":null,"domain_candidate":null,"domain_consensus":null,"study_design_codex":"observational","study_design_gemma":"observational","study_design_scores_codex":[0.001803987,0.0005860814,0.4335335,0.0006820721,0.001492269,0.001724199,0.001033401,0.06837186,0.1792735,0.01428916,0.1537462,0.1434639],"study_design_scores_gemma":[0.0002525675,0.000289111,0.627688,0.0001009329,0.0003509921,0.001256851,0.0003415113,0.122594,0.08215706,0.006824325,0.1578529,0.0002918685],"study_design_candidate":"observational","study_design_consensus":"observational","genre_codex":"empirical","genre_gemma":"empirical","genre_scores_codex":[0.7129736,0.0007634455,0.06968205,0.001457827,0.0004413937,0.0002997422,0.1360432,0.01017241,0.06816636],"genre_scores_gemma":[0.8307374,0.0002064191,0.04262301,0.000349433,0.0001223406,0.0001338138,0.1178663,0.001717222,0.006244157],"genre_candidate":"empirical","genre_consensus":"empirical","teacher_disagreement_score":0.008450412,"threshold_uncertainty_score":0.01680249,"prediction_status":"machine_predicted_unvalidated"},"machine_scores":{"provisional":true,"baseline":true,"maturity_gate_passed":false,"score_opus":0.006436192431533496,"score_gpt":0.1865623301571143,"score_spread":0.1801261377255808,"validation_status":"score_only:v0-immature-baseline","note":"Baseline scores from an immature model (maturity gate not passed). 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