{"paper":{"title":"Discovery of a Proto-cluster Associated with a Ly-$\\alpha$ Blob Pair at z=2.3","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.GA","authors_text":"(2) Korea Astronomy, (3) University of Arizona), Alexander Karim (1), Ann Zabludoff (3), Benjamin Magnelli (1) ((1) Argelander Institut f\\\"ur Astronomie, Frank Bertoldi (1), Space Science Institute, Toma B\\u{a}descu (1), Yujin Yang (2)","submitted_at":"2017-08-01T18:00:04Z","abstract_excerpt":"Bright Ly-$\\alpha$ blobs (LABs) --- extended nebulae with sizes of $\\sim$100kpc and Ly-$\\alpha$ luminosities of $\\sim$10$^{44}$erg s$^{-1}$ --- often reside in overdensities of compact Ly-$\\alpha$ emitters (LAEs) that may be galaxy protoclusters. The number density, variance, and internal kinematics of LABs suggest that they themselves trace group-like halos. Here we test this hierarchical picture, presenting deep, wide-field Ly-$\\alpha$ narrowband imaging of a 1$^\\circ$ $\\times$ 0.5$^\\circ$ region around a LAB pair at $z$ = 2.3 discovered previously by a blind survey. We find 183 Ly-$\\alpha$ "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1708.00447","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"}