{"id":"W4280631862","doi":"10.3847/2041-8213/ac6756","title":"First Sagittarius A* Event Horizon Telescope Results. VI. Testing the Black Hole Metric","year":2022,"lang":"en","type":"article","venue":"The Astrophysical Journal Letters","topic":"Astrophysical Phenomena and Observations","field":"Physics and Astronomy","cited_by":652,"is_retracted":false,"has_abstract":true,"ca_institutions":"Canadian Institute for Theoretical Astrophysics; University of Toronto; Perimeter Institute; University of Waterloo; Canadian Institute for Advanced Research; McGill University","funders":"Los Alamos National Laboratory; Oak Ridge National Laboratory; Office of International Science and Engineering; National Key Research and Development Program of China; Japan Society for the Promotion of Science; Physics Division, National Center for Theoretical Sciences; National Nuclear Security Administration; Toray Science Foundation; East Asian Core Observatories Association; Institut Périmètre de physique théorique; Agencia Nacional de Investigación y Desarrollo; Ministry of Science and ICT, South Korea; Istituto Nazionale di Fisica Nucleare; National Astronomical Observatory of Japan; Universidad Nacional Autónoma de México; Recruitment Program of Global Experts; Shanghai Jiao Tong University; Academy of Finland; Max-Planck-Gesellschaft; Centre National de la Recherche Scientifique; Ministry of Education, India; National Natural Science Foundation of China; National Research Foundation of Korea; Ministerio de Ciencia, Innovación y Universidades; Nuclear Safety and Security Commission; Generalitat Valenciana; National Science Foundation; China Postdoctoral Science Foundation; Instituto de Astrofísica de Andalucía; Deutsche Forschungsgemeinschaft; Nederlandse Organisatie voor Wetenschappelijk Onderzoek; Chinese Academy of Sciences; Academia Sinica; Junta de Andalucía; Universiteit van Amsterdam; Natural Sciences and Engineering Research Council of Canada; Netherlands eScience Center; European Southern Observatory; John Templeton Foundation; China Scholarship Council; Ministry of Education, Culture, Sports, Science and Technology; Radboud Universiteit; University of Pretoria; National Research Foundation; Compute Canada; Office of Science; Simons Foundation; Joint Institute for Computational Fundamental Science; University of Arizona; Smithsonian Institution; International Max Planck Research School for Environmental, Cellular and Molecular Microbiology; Vetenskapsrådet; U.S. Department of Energy; European Commission; Leverhulme Trust; National Radio Astronomy Observatory; Korea Astronomy and Space Science Institute; Science and Technology Facilities Council; Universiteit Leiden; Associated Universities; Space Telescope Science Institute; National Center for Theoretical Sciences; National Institutes of Natural Sciences; Government of Canada; Dirección General de Asuntos del Personal Académico, Universidad Nacional Autónoma de México; Ministerio de Ciencia e Innovación; Consejo Nacional de Ciencia y Tecnología; Consejo Superior de Investigaciones Científicas; University of Chicago; National Aeronautics and Space Administration; Gordon and Betty Moore Foundation; Flatiron Health","keywords":"Event horizon; Sagittarius A*; Black hole (networking); Metric (unit); Horizon; Physics; Astrophysics; Telescope; Event (particle physics); Astronomy; Galactic Center; Computer science; Computer security; Engineering; Galaxy","routes":{"ca_aff":true,"ca_fund":true,"ca_venue":false,"about_ca":false,"invisible_to_affiliation_only":false},"retraction":null,"screen":null,"direct_labels":[],"prediction":{"model_version":"metacan-v3-hybrid-931329e0061c","candidate_categories":[],"consensus_categories":[],"category_scores_codex":[0.001068817,0.000446006,0.0003320495,0.0005315206,0.0006235196,0.0009332996,0.0004465884,0.0004629233,0.003492305],"category_scores_gemma":[0.0007521488,0.0001876836,0.0008171031,0.0003306287,0.0003218987,0.0005435352,0.001090346,0.0005381539,0.001762722],"about_ca_system_candidate":false,"about_ca_system_consensus":false,"about_ca_system_score_codex":0.0009662901,"about_ca_system_score_gemma":0.0003415712,"about_ca_topic_candidate":false,"about_ca_topic_consensus":false,"about_ca_topic_score_codex":0.006798791,"about_ca_topic_score_gemma":0.01014001,"domain_scores_codex":[0.9996634,0.00005042553,0.00001118613,0.00007320021,0.0001236231,0.00007825842],"domain_scores_gemma":[0.9989278,0.0001466029,0.0001618347,0.0002813511,0.0002237175,0.0002586925],"domain_codex":null,"domain_gemma":null,"domain_candidate":null,"domain_consensus":null,"study_design_codex":"observational","study_design_gemma":"observational","study_design_scores_codex":[0.002533734,0.0009380401,0.5797782,0.0003358282,0.001151519,0.002028584,0.001308973,0.05274183,0.1776458,0.01894261,0.05805172,0.1045432],"study_design_scores_gemma":[0.0002791996,0.0007736485,0.7691709,0.00008653902,0.0002702304,0.0008657852,0.0006709822,0.08536794,0.06319783,0.009614929,0.06947733,0.0002247024],"study_design_candidate":"observational","study_design_consensus":"observational","genre_codex":"empirical","genre_gemma":"empirical","genre_scores_codex":[0.9243839,0.0003463394,0.01562111,0.0007138953,0.0001169408,0.0000886313,0.01121528,0.004171506,0.04334246],"genre_scores_gemma":[0.9773405,0.00006798046,0.007555211,0.000238738,0.00003952327,0.00003708794,0.01052555,0.0005510832,0.003644389],"genre_candidate":"empirical","genre_consensus":"empirical","teacher_disagreement_score":0.006798791,"threshold_uncertainty_score":0.01351845,"prediction_status":"machine_predicted_unvalidated"},"machine_scores":{"provisional":true,"baseline":true,"maturity_gate_passed":false,"score_opus":0.01891503165035073,"score_gpt":0.2257307686073747,"score_spread":0.206815736957024,"validation_status":"score_only:v0-immature-baseline","note":"Baseline scores from an immature model (maturity gate not passed). 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