{"id":"W2937056002","doi":"10.3847/2041-8213/ab0e85","title":"First M87 Event Horizon Telescope Results. IV. Imaging the Central Supermassive Black Hole","year":2019,"lang":"en","type":"article","venue":"The Astrophysical Journal Letters","topic":"Astrophysical Phenomena and Observations","field":"Physics and Astronomy","cited_by":1490,"is_retracted":false,"has_abstract":true,"ca_institutions":"Canadian Institute for Theoretical Astrophysics; Canadian Institute for Advanced Research; University of Toronto; Perimeter Institute; University of Waterloo","funders":"Los Alamos National Laboratory; Office of International Science and Engineering; National Institute of Information and Communications Technology; National Key Research and Development Program of China; Comisión Nacional de Investigación Científica y Tecnológica; Japan Society for the Promotion of Science; Toray Science Foundation; National Nuclear Security Administration; Korea Research Environment Open Network; Institut Périmètre de physique théorique; Recruitment Program of Global Experts; National Science Foundation; Iran Telecommunication Research Center; Korea Astronomy and Space Science Institute; Ministero dello Sviluppo Economico; Academy of Finland; Max-Planck-Gesellschaft; Centre National de la Recherche Scientifique; National Natural Science Foundation of China; National Research Foundation of Korea; Universidad Nacional Autónoma de México; Natural Sciences and Engineering Research Council of Canada; China Scholarship Council; Ministry of Education, Culture, Sports, Science and Technology; John Templeton Foundation; Ministerio de Economía y Competitividad; European Southern Observatory; Korea Institute of Science and Technology; Ministerio de Ciencia, Innovación y Universidades; Nuclear Safety and Security Commission; Generalitat Valenciana; Instituto de Astrofísica de Andalucía; Nederlandse Organisatie voor Wetenschappelijk Onderzoek; Chinese Academy of Sciences; Academia Sinica; Vetenskapsrådet; International Max Planck Research School for Environmental, Cellular and Molecular Microbiology; Smithsonian Institution; U.S. Department of Energy; Kavli Foundation; European Commission; Leverhulme Trust; National Radio Astronomy Observatory; National Research Foundation; University of Arizona; National Astronomical Observatory of Japan; Associated Universities; Dirección General de Asuntos del Personal Académico, Universidad Nacional Autónoma de México; Consejo Nacional de Ciencia y Tecnología; University of Chicago; Korea Institute of Science and Technology Information; Harvard University; Innovation, Science and Economic Development Canada; National Institutes of Natural Sciences; Government of Canada; National Aeronautics and Space Administration; Istituto Nazionale di Fisica Nucleare; Department of Science and Technology, Ministry of Science and Technology, India; Russian Science Foundation; Gordon and Betty Moore Foundation; Compute Canada","keywords":"Supermassive black hole; Physics; Shadow (psychology); Telescope; Asymmetry; Brightness; Galaxy; Astrophysics; Artificial intelligence; Optics; Computer science","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":[0.001566652,0.0004114923,0.0005188314,0.0007347087,0.0006407281,0.00107511,0.0004822708,0.0005673692,0.001939661],"category_scores_gemma":[0.001654861,0.0003696259,0.0008707038,0.0005559996,0.0004731367,0.0003591358,0.0008415859,0.0004949489,0.001054478],"about_ca_system_candidate":false,"about_ca_system_consensus":false,"about_ca_system_score_codex":0.0007502343,"about_ca_system_score_gemma":0.0004399396,"about_ca_topic_candidate":false,"about_ca_topic_consensus":false,"about_ca_topic_score_codex":0.005285336,"about_ca_topic_score_gemma":0.01304188,"domain_scores_codex":[0.9992094,0.00009011964,0.00002855935,0.0001133332,0.0004332113,0.0001253088],"domain_scores_gemma":[0.9988153,0.0001467759,0.0001434127,0.0004087083,0.000368942,0.000116911],"domain_codex":null,"domain_gemma":null,"domain_candidate":null,"domain_consensus":null,"study_design_codex":"bench_or_experimental","study_design_gemma":"observational","study_design_scores_codex":[0.002647668,0.0008516553,0.250122,0.0006929014,0.001287882,0.00193655,0.002317829,0.06720743,0.3985085,0.005897683,0.02686498,0.2416651],"study_design_scores_gemma":[0.0002367116,0.0006145543,0.7997499,0.00006927775,0.0003236791,0.001381819,0.000549414,0.05813854,0.1084087,0.002724146,0.02767585,0.000127331],"study_design_candidate":"observational","study_design_consensus":null,"genre_codex":"empirical","genre_gemma":"empirical","genre_scores_codex":[0.9164459,0.0004832257,0.04145049,0.0004965538,0.0001050692,0.0002557553,0.01015964,0.002891974,0.02771127],"genre_scores_gemma":[0.9430257,0.00008961894,0.04331367,0.0001444702,0.00004254726,0.00007043946,0.009933172,0.0006896392,0.002690668],"genre_candidate":"empirical","genre_consensus":"empirical","teacher_disagreement_score":0.005285336,"threshold_uncertainty_score":0.01050913,"prediction_status":"machine_predicted_unvalidated"},"machine_scores":{"provisional":true,"baseline":true,"maturity_gate_passed":false,"score_opus":0.006611639166964712,"score_gpt":0.2081911005999434,"score_spread":0.2015794614329786,"validation_status":"score_only:v0-immature-baseline","note":"Baseline scores from an immature model (maturity gate not passed). Scores rank; they never assert a category."}}