{"id":"W4414195689","doi":"10.1051/0004-6361/202555855","title":"Horizon-scale variability of M87* from 2017–2021 EHT observations","year":2025,"lang":"en","type":"article","venue":"Astronomy and Astrophysics","topic":"Astrophysics and Cosmic Phenomena","field":"Physics and Astronomy","cited_by":10,"is_retracted":false,"has_abstract":true,"ca_institutions":"University of Lethbridge; Canadian Institute for Theoretical Astrophysics; Canadian Institute for Advanced Research; Trinity College; McGill University; University of Toronto; Perimeter Institute; University of Waterloo","funders":"","keywords":"Position angle; Linear polarization; Very Long Baseline Array; Very-long-baseline interferometry; Telescope; Supermassive black hole; Polarization (electrochemistry); Brightness; Accretion (finance)","routes":{"ca_aff":true,"ca_fund":false,"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":[0.0003684973,0.0002335599,0.000253007,0.001041258,0.0002613998,0.0006053576,0.0002834571,0.0002258537,0.0005566505],"category_scores_gemma":[0.0006538629,0.0001612359,0.0002453349,0.0006210296,0.0002189223,0.0003393579,0.000747224,0.0003327527,0.0004083883],"about_ca_system_candidate":false,"about_ca_system_consensus":false,"about_ca_system_score_codex":0.0004313458,"about_ca_system_score_gemma":0.0002030259,"about_ca_topic_candidate":false,"about_ca_topic_consensus":false,"about_ca_topic_score_codex":0.004711558,"about_ca_topic_score_gemma":0.008006807,"domain_scores_codex":[0.9998052,0.00001058355,0.000007679376,0.00004082559,0.00006424169,0.00007161534],"domain_scores_gemma":[0.9995166,0.00003410069,0.0001448984,0.00005591006,0.0001282969,0.0001202202],"domain_codex":null,"domain_gemma":null,"domain_candidate":null,"domain_consensus":null,"study_design_codex":"observational","study_design_gemma":"observational","study_design_scores_codex":[0.0004695811,0.000115621,0.9192301,0.00008637639,0.0001852322,0.0006731675,0.0009418634,0.002131367,0.04043096,0.000460007,0.005855306,0.02942044],"study_design_scores_gemma":[0.000004740624,0.0000189993,0.9954391,0.00000720835,0.0000219431,0.0001198703,0.00008687607,0.0007655163,0.001144196,0.00004617506,0.002340047,0.000005345803],"study_design_candidate":"observational","study_design_consensus":"observational","genre_codex":"empirical","genre_gemma":"empirical","genre_scores_codex":[0.9960522,0.0001568189,0.0003598869,0.00008864622,0.00001430759,0.000006197862,0.001533133,0.00007527326,0.00171363],"genre_scores_gemma":[0.9920213,0.0001060759,0.0003985587,0.00005090567,0.00005287823,0.00001359204,0.007005611,0.0000381199,0.0003129797],"genre_candidate":"empirical","genre_consensus":"empirical","teacher_disagreement_score":0.004711558,"threshold_uncertainty_score":0.0093683,"prediction_status":"machine_predicted_unvalidated"},"machine_scores":{"provisional":true,"baseline":true,"maturity_gate_passed":false,"score_opus":0.008168900541399541,"score_gpt":0.2086789735957473,"score_spread":0.2005100730543478,"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."}}