{"paper":{"title":"Accretion-Driven Evolution of Black Holes: Eddington Ratios, Duty Cycles, and Active Galaxy Fractions","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.CO","authors_text":"(2) Ohio State University, (3) Institucio Catalana de Recerca i Estudis Avancats, 4) ((1) GEPI - Observatoire de Paris, (4) Institut de Ciencies del Cosmos, CNRS, David H. Weinberg (2), Francesco Shankar (1), Jordi Miralda-Escude' (3, Universitat de Barcelona), Universite' Paris Diderot","submitted_at":"2011-11-15T16:39:15Z","abstract_excerpt":"We develop semi-empirical models of the supermassive black hole and active galactic nucleus (AGN) populations, which incorporate the black hole growth implied by the observed AGN luminosity function assuming a radiative efficiency \\epsilon, and a distribution of Eddington ratios \\lambda. By generalizing these continuity-equation models to allow a distribution P(\\lambda|mbh,z) we are able to draw on constraints from observationally estimated P(\\lambda) distributions and active galaxy fractions while accounting for the luminosity thresholds of observational samples. We consider models with a Gau"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1111.3574","kind":"arxiv","version":2},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"references":{"count":0,"sample":[],"resolved_work":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","internal_anchors":0},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"}