{"id":"W2000178233","doi":"10.1103/physrevd.89.121302","title":"3.5 keV x rays as the “21 cm line” of dark atoms, and a link to light sterile neutrinos","year":2014,"lang":"en","type":"article","venue":"Physical review. D. Particles, fields, gravitation, and cosmology/Physical review. D, Particles, fields, gravitation, and cosmology","topic":"Dark Matter and Cosmic Phenomena","field":"Physics and Astronomy","cited_by":62,"is_retracted":false,"has_abstract":true,"ca_institutions":"McGill University","funders":"","keywords":"Physics; Dark photon; Dark matter; Excited state; Dark state; Atomic physics; Astrophysics; Light dark matter; Scalar field dark matter; Cosmology; Dark energy","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":"codex-gemma-dda1882f352a","candidate_categories":["metaepi_narrow"],"consensus_categories":[],"category_scores_codex":[0.0008017184,0.0006082473,0.001504774,0.00008374619,0.0004139162,0.0001039161,0.0004695944,0.00009716719,0.000003018834],"category_scores_gemma":[0.0003338399,0.0004827755,0.0003137889,0.0005798714,0.0004762773,0.0002463993,0.0002495666,0.0005610819,0.00008763094],"about_ca_system_candidate":false,"about_ca_system_consensus":false,"about_ca_system_score_codex":0.00001918515,"about_ca_system_score_gemma":0.0000999709,"about_ca_topic_candidate":false,"about_ca_topic_consensus":false,"about_ca_topic_score_codex":0.0002382285,"about_ca_topic_score_gemma":0.00004392378,"domain_scores_codex":[0.9957565,0.0009018642,0.001205961,0.0009735498,0.0003837243,0.0007783915],"domain_scores_gemma":[0.9963781,0.001362738,0.000532939,0.0008175096,0.0004024383,0.0005063305],"domain_codex":null,"domain_gemma":null,"domain_candidate":null,"domain_consensus":null,"study_design_codex":"theoretical_or_conceptual","study_design_gemma":"theoretical_or_conceptual","study_design_scores_codex":[0.0003710058,0.001428006,0.04279358,0.002964712,0.0004872181,0.00001020939,0.004585583,0.00002073009,0.00790213,0.6866147,0.02371762,0.2291045],"study_design_scores_gemma":[0.0009416345,0.001067173,0.005272232,0.0006698474,0.0005786914,0.00001790727,0.0002171629,0.00004066121,0.001068621,0.9777873,0.01179576,0.0005429849],"study_design_candidate":"theoretical_or_conceptual","study_design_consensus":"theoretical_or_conceptual","genre_codex":"empirical","genre_gemma":"empirical","genre_scores_codex":[0.9620381,0.01073315,0.001466334,0.02394471,0.0001899529,0.001436391,0.00005420638,0.00005288855,0.00008424577],"genre_scores_gemma":[0.9749515,0.004321387,0.0002638912,0.01936195,0.0004641739,0.0004873721,0.00007502326,0.00004539217,0.00002929484],"genre_candidate":"empirical","genre_consensus":"empirical","teacher_disagreement_score":0.2911727,"threshold_uncertainty_score":0.9997624,"prediction_status":"machine_predicted_unvalidated"},"machine_scores":{"provisional":true,"baseline":true,"maturity_gate_passed":false,"score_opus":0.01537181772851117,"score_gpt":0.3079842061630018,"score_spread":0.2926123884344907,"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."}}