{"paper":{"title":"The First Luminous Quasars and Their Host Galaxies","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.GA","authors_text":"Aaron Barth (UCI), Anna-Christina Eilers (MPIA), Anton Koekemoer (STScI), Bram Venemans (MPIA), Chiara Mazzucchelli (ESO), Dan Stern (JPL), Dominik Riechers (Cornell, Eduardo Banados (MPIA), Emanuele Paolo Farina (MPIA & MPA), Fabian Walter (MPIA, Fabio Pacucci (Kapteyn, Feige Wang (UCSB), Gisella De Rosa (STScI), Hyunsung D. Jun (KIAS), James Rhoads (NASA GSFC), Jane Rigby (NASA GSFC), Jenny Greene (Princeton), Jinyi Yang (Arizona), Linhua Jiang (PKU), Marianne Vestergaard (NBI), Marta Volonteri (IAP), Melanie Habouzit (Flatiron CCA), Michael A. Strauss (Princeton), MPIA), NRAO), Robert A. Simcoe (MIT), Roberto Decarli (INAF-OAS), Sangeeta Malhotra (NASA GSFC), Tommaso Treu (UCLA), Xiaohui Fan (Arizona), Yale), Yue Shen (UIUC)","submitted_at":"2019-03-10T23:43:32Z","abstract_excerpt":"The discovery of luminous quasars at redshifts up to 7.5 demonstrates the existence of several billion M_sun supermassive black holes (SMBHs) less than a billion years after the Big Bang. They are accompanied by intense star formation in their host galaxies, pinpointing sites of massive galaxy assembly in the early universe, while their absorption spectra reveal an increasing neutral intergalactic medium (IGM) at the epoch of reionization. Extrapolating from the rapid evolution of the quasar density at z=5-7, we expect that there is only one luminous quasar powered by a billion M_sun SMBH in t"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1903.04078","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"}