{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2016:G5P7Y4C4DFHP2XT2VBEREAGKMI","short_pith_number":"pith:G5P7Y4C4","schema_version":"1.0","canonical_sha256":"375ffc705c194efd5e7aa8491200ca623fc3b096db97425e25a86f3da15fd98f","source":{"kind":"arxiv","id":"1609.02913","version":1},"attestation_state":"computed","paper":{"title":"MApping the Most Massive Overdensities (MAMMOTH) II -- Discovery of an Extremely Massive Overdensity BOSS1441 at $z=2.32$","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.CO"],"primary_cat":"astro-ph.GA","authors_text":"Ann Zabludoff, Brenda Frye, Fuyan Bian, Ian McGreer, J. Xavier Prochaska, Linhua Jiang, Nobunari Kashikawa, Ran Wang, Richard Green, Xiaohui Fan, Yujin Yang, Zheng Cai, Zhen-Ya Zheng","submitted_at":"2016-09-09T20:00:00Z","abstract_excerpt":"Cosmological simulations suggest a strong correlation between high optical-depth Ly$\\alpha$ absorbers, which arise from the intergalactic medium (IGM), and 3-D mass overdensities on scales of $10-30$ $h^{-1}$ comoving Mpc. By examining the absorption spectra of $\\sim$ 80,000 QSO sight-lines over a volume of 0.1 Gpc$^3$ in the Sloan Digital Sky Survey III (SDSS-III), we have identified an extreme overdensity, BOSS1441, which contains a rare group of strong Ly$\\alpha$ absorbers at $z=2.32\\pm 0.02$. This absorber group is associated with six QSOs at the same redshift on a 30 comoving Mpc scale. U"},"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":"1609.02913","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2016-09-09T20:00:00Z","cross_cats_sorted":["astro-ph.CO"],"title_canon_sha256":"6cfd9f473854ad5d935341beac03922df0ce6a22a1d03c4afc66ab49d5ed28f2","abstract_canon_sha256":"0ca099b02b693d3ceaada4f082d5f00513dd831084e85f40dea664c9e3efd31e"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:45:15.520748Z","signature_b64":"OmfRAlNDHaoxdUCLLLuv8uhOd5n9P0TMIZCbDejjcj7PTLvHfRDrJp2j/mSt0Cn5MhLpuABgwc6Jy36gXooDCA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"375ffc705c194efd5e7aa8491200ca623fc3b096db97425e25a86f3da15fd98f","last_reissued_at":"2026-05-18T00:45:15.520054Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:45:15.520054Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"MApping the Most Massive Overdensities (MAMMOTH) II -- Discovery of an Extremely Massive Overdensity BOSS1441 at $z=2.32$","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.CO"],"primary_cat":"astro-ph.GA","authors_text":"Ann Zabludoff, Brenda Frye, Fuyan Bian, Ian McGreer, J. Xavier Prochaska, Linhua Jiang, Nobunari Kashikawa, Ran Wang, Richard Green, Xiaohui Fan, Yujin Yang, Zheng Cai, Zhen-Ya Zheng","submitted_at":"2016-09-09T20:00:00Z","abstract_excerpt":"Cosmological simulations suggest a strong correlation between high optical-depth Ly$\\alpha$ absorbers, which arise from the intergalactic medium (IGM), and 3-D mass overdensities on scales of $10-30$ $h^{-1}$ comoving Mpc. By examining the absorption spectra of $\\sim$ 80,000 QSO sight-lines over a volume of 0.1 Gpc$^3$ in the Sloan Digital Sky Survey III (SDSS-III), we have identified an extreme overdensity, BOSS1441, which contains a rare group of strong Ly$\\alpha$ absorbers at $z=2.32\\pm 0.02$. This absorber group is associated with six QSOs at the same redshift on a 30 comoving Mpc scale. U"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1609.02913","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"},"aliases":[{"alias_kind":"arxiv","alias_value":"1609.02913","created_at":"2026-05-18T00:45:15.520148+00:00"},{"alias_kind":"arxiv_version","alias_value":"1609.02913v1","created_at":"2026-05-18T00:45:15.520148+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1609.02913","created_at":"2026-05-18T00:45:15.520148+00:00"},{"alias_kind":"pith_short_12","alias_value":"G5P7Y4C4DFHP","created_at":"2026-05-18T12:30:15.759754+00:00"},{"alias_kind":"pith_short_16","alias_value":"G5P7Y4C4DFHP2XT2","created_at":"2026-05-18T12:30:15.759754+00:00"},{"alias_kind":"pith_short_8","alias_value":"G5P7Y4C4","created_at":"2026-05-18T12:30:15.759754+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":0,"internal_anchor_count":0,"sample":[]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/G5P7Y4C4DFHP2XT2VBEREAGKMI","json":"https://pith.science/pith/G5P7Y4C4DFHP2XT2VBEREAGKMI.json","graph_json":"https://pith.science/api/pith-number/G5P7Y4C4DFHP2XT2VBEREAGKMI/graph.json","events_json":"https://pith.science/api/pith-number/G5P7Y4C4DFHP2XT2VBEREAGKMI/events.json","paper":"https://pith.science/paper/G5P7Y4C4"},"agent_actions":{"view_html":"https://pith.science/pith/G5P7Y4C4DFHP2XT2VBEREAGKMI","download_json":"https://pith.science/pith/G5P7Y4C4DFHP2XT2VBEREAGKMI.json","view_paper":"https://pith.science/paper/G5P7Y4C4","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1609.02913&json=true","fetch_graph":"https://pith.science/api/pith-number/G5P7Y4C4DFHP2XT2VBEREAGKMI/graph.json","fetch_events":"https://pith.science/api/pith-number/G5P7Y4C4DFHP2XT2VBEREAGKMI/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/G5P7Y4C4DFHP2XT2VBEREAGKMI/action/timestamp_anchor","attest_storage":"https://pith.science/pith/G5P7Y4C4DFHP2XT2VBEREAGKMI/action/storage_attestation","attest_author":"https://pith.science/pith/G5P7Y4C4DFHP2XT2VBEREAGKMI/action/author_attestation","sign_citation":"https://pith.science/pith/G5P7Y4C4DFHP2XT2VBEREAGKMI/action/citation_signature","submit_replication":"https://pith.science/pith/G5P7Y4C4DFHP2XT2VBEREAGKMI/action/replication_record"}},"created_at":"2026-05-18T00:45:15.520148+00:00","updated_at":"2026-05-18T00:45:15.520148+00:00"}