{"paper":{"title":"The spectral and environment properties of $z\\sim2.0-2.5$ quasar pairs","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.GA","authors_text":"Elisabeta Lusso (Durham-CEA), Jason X. Prochaska (UC Santa Cruz), John M. O'Meara (Saint Michael's College), Joseph F. Hennawi (UCSB/MPIA), Marcel Neeleman (UCLA/MPIA), Marc Rafelski (STSI), Michele Fumagalli (Durham-CEA/ICC), Tom Theuns (Durham-ICC)","submitted_at":"2018-05-08T18:00:01Z","abstract_excerpt":"We present the first results from our survey of intervening and proximate Lyman limit systems (LLSs) at $z$$\\sim$2.0-2.5 using the Wide Field Camera 3 on-board the Hubble Space Telescope. The quasars in our sample are projected pairs with proper transverse separations $R_\\perp$$\\leq$150 kpc and line of sight velocity separations $\\lesssim$11,000 km/s. We construct a stacked ultraviolet (rest-frame wavelengths 700-2000\\AA) spectrum of pairs corrected for the intervening Lyman forest and Lyman continuum absorption. The observed spectral composite presents a moderate flux excess for the most prom"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1805.03206","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"}