{"id":"W4414534849","doi":"10.1088/1361-6382/ae0be3","title":"Null orbits and shadows in the Ernst-Wild geometry: insights for black holes immersed in a magnetic field","year":2025,"lang":"en","type":"article","venue":"Classical and Quantum Gravity","topic":"Relativity and Gravitational Theory","field":"Physics and Astronomy","cited_by":1,"is_retracted":false,"has_abstract":true,"ca_institutions":"University of Victoria","funders":"","keywords":"Observable; Null (SQL); Black hole (networking); Eikonal equation; Magnetic field; Rotating black hole; Lyapunov exponent","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":[0.0002888699,0.0003902685,0.0002555131,0.0006601199,0.0004044691,0.0006326616,0.0003809751,0.0004031932,0.001326578],"category_scores_gemma":[0.001093046,0.0001740552,0.0002393804,0.0001389854,0.001683959,0.001141647,0.0008948424,0.000331087,0.00009573344],"about_ca_system_candidate":false,"about_ca_system_consensus":false,"about_ca_system_score_codex":0.0003677626,"about_ca_system_score_gemma":0.0002234196,"about_ca_topic_candidate":false,"about_ca_topic_consensus":false,"about_ca_topic_score_codex":0.001425094,"about_ca_topic_score_gemma":0.0006894545,"domain_scores_codex":[0.9999404,0.00002479016,0.000002501342,0.000006397953,0.00001458816,0.00001132932],"domain_scores_gemma":[0.9997343,0.00007429945,0.00007957102,0.00002906749,0.00002371472,0.00005900598],"domain_codex":null,"domain_gemma":null,"domain_candidate":null,"domain_consensus":null,"study_design_codex":"theoretical_or_conceptual","study_design_gemma":"simulation_or_modeling","study_design_scores_codex":[0.000268951,0.00007524714,0.004954619,0.00007092874,0.00003157362,0.00137898,0.001009543,0.1975919,0.03462224,0.7543871,0.0004029107,0.005205884],"study_design_scores_gemma":[0.0000511033,0.0001341981,0.003962462,0.00001658398,0.00000997577,0.0002651377,0.000431998,0.801,0.002732221,0.1904644,0.0008958309,0.00003610864],"study_design_candidate":"simulation_or_modeling","study_design_consensus":null,"genre_codex":"empirical","genre_gemma":"empirical","genre_scores_codex":[0.9709047,0.0001109951,0.02350692,0.000139294,0.00001546914,0.00001323025,0.00002401952,0.00005115449,0.005234105],"genre_scores_gemma":[0.9956343,0.00006092251,0.003342276,0.000008749476,0.000007273909,0.000004381471,0.00000945473,0.00001667074,0.0009160899],"genre_candidate":"empirical","genre_consensus":"empirical","teacher_disagreement_score":0.001425094,"threshold_uncertainty_score":0.004437864,"prediction_status":"machine_predicted_unvalidated"},"machine_scores":{"provisional":true,"baseline":true,"maturity_gate_passed":false,"score_opus":0.0123662293036142,"score_gpt":0.2660539319640476,"score_spread":0.2536877026604334,"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."}}