{"paper":{"title":"The Pan-STARRS1 $\\mathbf{z>5.6}$ Quasar Survey: III. The $\\mathbf{z\\approx6}$ Quasar Luminosity Function","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.GA","authors_text":"Bram P. Venemans, Chiara Mazzucchelli, Daniel Stern, Eduardo Ba\\~nados, Emanuele Paolo Farina, Fabian Walter, Hans-Walter Rix, Jan-Torge Schindler, Riccardo Nanni, Roberto Decarli, Thomas Connor, Xiaohui Fan","submitted_at":"2022-12-08T10:34:17Z","abstract_excerpt":"We present the $z\\!\\approx\\!6$ type-1 quasar luminosity function (QLF) based on the Pan-STARRS1 (PS1) quasar survey. The PS1 sample includes 125 quasars at $z\\approx5.7-6.2$ with $-28\\lesssim M_{1450}\\lesssim-25$. Complemented by 48 fainter quasars from the SHELLQs survey, we evaluate the $z\\approx6$ QLF over $-28\\lesssim M_{1450}\\lesssim-22$. Adopting a double power law with an exponential evolution of the quasar density ($\\Phi(z)\\propto10^{k(z-6)}$; $k=-0.7$), we use a maximum likelihood method to model our data. We find a break magnitude of $M^*=-26.38_{-0.60}^{+0.79}\\,\\text{mag}$, a faint "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2212.04179","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2212.04179/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"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"}