{"paper":{"title":"Measurements of quasar proximity zones with the Ly$\\alpha$ forest of DESI Y1 quasars","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":["astro-ph.CO"],"primary_cat":"astro-ph.GA","authors_text":"A. Cuceu, A. de la Macorra, A. Font-Ribera, A. Kremin, A. Meisner, A. Mu\\~noz-Guti\\'errez, B. A. Weaver, C. Lamman, C. Poppett, David H. Weinberg, D. Bianchi, D. Brooks, D. Kirkby, D. Schlegel, D. Sprayberry, E. Gazta\\~naga, E. Sanchez, F. Prada, G. Gutierrez, G. Rossi, G. Tarl\\'e, H. K. Herrera-Alcantar, H. Zou, I. P\\'erez-R\\`afols, J. Aguilar, J. E. Forero-Romero, J. Guy, J. Silber, K. Honscheid, L. Le Guillou, M. Ishak, M. Landriau, M. Schubnell, N. Palanque-Delabrouille, Paul Martini, R. Joyce, R. Miquel, Ryuichiro Hada, S. Ahlen, S. Ferraro, T. Claybaugh, T. Kisner, W. J. Percival, Zheng Zheng","submitted_at":"2025-12-20T09:06:19Z","abstract_excerpt":"The intergalactic medium (IGM) around quasars is shaped by their dense environments and by their excess ionizing radiation, forming a \"quasar proximity zone\" whose size and anisotropy depend on the quasar's halo mass, luminosity, age, and radiation geometry. Using over 10,000 quasar pairs from the Dark Energy Spectroscopic Instrument (DESI) Year 1 data, with projected comoving separations $r_{\\perp} < 2\\,h^{-1}{\\rm Mpc}$, we investigate how the proximity zone of foreground quasars at $z\\sim2{\\rm-}3.5$ affects Lyman-alpha absorption in their background quasars. The large DESI sample enables unp"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2512.18281","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/2512.18281/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"}