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Finkelstein","submitted_at":"2024-04-03T18:00:02Z","abstract_excerpt":"Theoretical models predict that z~6 quasars are hosted in the most massive halos of the underlying dark matter distribution and thus would be immersed in protoclusters of galaxies. However, observations report inconclusive results. We investigate the 1.1 pMpc2 environment of the z = 7.54 luminous quasar ULAS J1342+0928. We search for Lyman-break galaxy candidates (LBG) using deep imaging from the Hubble Space Telescope (HST) in the ACS/F814W, WFC3/F105W/F125W bands, and Spitzer/IRAC at 3.6 $\\mu$m and 4.5 $\\mu$m. We report a zphot = $7.69^{+0.33}_{-0.23}$ LBG with magF125W = 26.41 at 223 projec"},"verification_status":{"content_addressed":true,"pith_receipt":true,"author_attested":false,"weak_author_claims":0,"strong_author_claims":0,"externally_anchored":false,"storage_verified":false,"citation_signatures":0,"replication_records":0,"graph_snapshot":true,"references_resolved":false,"formal_links_present":false},"canonical_record":{"source":{"id":"2404.02960","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2024-04-03T18:00:02Z","cross_cats_sorted":[],"title_canon_sha256":"c7447832a220b55001dfeca65e913cb597ad6e4404f174ae692b07291409c7a1","abstract_canon_sha256":"25803431b4d55cdad7de7f3be2d3b7fe4833f6599ff6e0b86f8aa8c12a49f742"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T08:04:04.157125Z","signature_b64":"zLTe7K+imSuYkixMQl2yltbjVzh70hjQqw5/Eoutk+Pl4RKs/uQqjgWI9GCw0oV5L0izuzzApPwlkVmw6NqjAA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"7751090b0cf8e2e06b076dd380ea741163dd96c197a72d38333cf1d14f051779","last_reissued_at":"2026-07-05T08:04:04.156615Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T08:04:04.156615Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Exploring the Mpc Environment of the Quasar ULAS J1342+0928 at z = 7.54","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.GA","authors_text":"Bram P. 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