{"paper":{"title":"Glimmering in the dark: modeling the low-mass end of the $M_{\\bullet}-\\sigma$ relation and of the quasar luminosity function","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.CO","astro-ph.HE"],"primary_cat":"astro-ph.GA","authors_text":"Abraham Loeb, Fabio Pacucci, Ignacio Mart\\'in-Navarro, Mar Mezcua","submitted_at":"2018-08-28T18:00:00Z","abstract_excerpt":"The $M_{\\bullet} - \\sigma$ relation establishes a connection between central black holes (BHs) and their host spheroids. Supported by observations at $M_{\\bullet} \\gtrsim 10^5 \\, M_{\\odot}$, there is limited data on its validity at lower masses. Employing a semi-analytical model to simulate the combined evolution of BHs and their host galaxies, we predict the observational consequences of assuming a bimodality in the accretion efficiency of BHs, with low-mass BHs ($M_{\\bullet} \\lesssim 10^5 \\, M_{\\odot}$) accreting inefficiently. We predict a departure from the $M_{\\bullet} - \\sigma$ relation "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1808.09452","kind":"arxiv","version":1},"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"}