{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2018:GYW4N5RQLJYLKQSIG2SCPTOHIL","short_pith_number":"pith:GYW4N5RQ","schema_version":"1.0","canonical_sha256":"362dc6f6305a70b5424836a427cdc742de59efbd08fa4733cf9b7717e35b87c4","source":{"kind":"arxiv","id":"1804.07222","version":1},"attestation_state":"computed","paper":{"title":"Eclipsing damped Ly$\\alpha$ systems in the Sloan Digital Sky Survey Data Release 12","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.CO"],"primary_cat":"astro-ph.GA","authors_text":"Habib G. Khosroshahi, Hadi Rahmani, Hassan Fathivavsari, Hayley Finley, Isabelle P\\^aris, Narges Jamialahmadi, Pasquier Noterdaeme, Patrick Petitjean, Raghunathan Srianand","submitted_at":"2018-04-19T15:26:12Z","abstract_excerpt":"We present the results of our automatic search for proximate damped Ly$\\alpha$ absorption (PDLA) systems in the quasar spectra from the Sloan Digital Sky Survey Data Release 12. We constrain our search to those PDLAs lying within 1500 km s$^{-1}$ from the quasar to make sure that the broad DLA absorption trough masks most of the strong Ly$\\alpha$ emission from the broad line region (BLR) of the quasar. When the Ly$\\alpha$ emission from the BLR is blocked by these so-called eclipsing DLAs, narrow Ly$\\alpha$ emission from the host galaxy could be revealed as a narrow emission line (NEL) in the D"},"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":"1804.07222","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2018-04-19T15:26:12Z","cross_cats_sorted":["astro-ph.CO"],"title_canon_sha256":"64805f71b0456d9608fb1d92f0d8a37f0fc56b08a0566ee92d34b4be39e0bc84","abstract_canon_sha256":"352bb209b7354bec8bebe8183761254c2ae53f88ecb34c2857b37419e745fdfe"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:17:02.972403Z","signature_b64":"TMDHq10WwfZD8XiAXooav9K9K6Xu8+2/Ap9uncP0ESBkcE1JzfO4NAqCRm5zSCyrfyCqYsAsbLMIdIL0SgNtAg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"362dc6f6305a70b5424836a427cdc742de59efbd08fa4733cf9b7717e35b87c4","last_reissued_at":"2026-05-18T00:17:02.971687Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:17:02.971687Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Eclipsing damped Ly$\\alpha$ systems in the Sloan Digital Sky Survey Data Release 12","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.CO"],"primary_cat":"astro-ph.GA","authors_text":"Habib G. Khosroshahi, Hadi Rahmani, Hassan Fathivavsari, Hayley Finley, Isabelle P\\^aris, Narges Jamialahmadi, Pasquier Noterdaeme, Patrick Petitjean, Raghunathan Srianand","submitted_at":"2018-04-19T15:26:12Z","abstract_excerpt":"We present the results of our automatic search for proximate damped Ly$\\alpha$ absorption (PDLA) systems in the quasar spectra from the Sloan Digital Sky Survey Data Release 12. We constrain our search to those PDLAs lying within 1500 km s$^{-1}$ from the quasar to make sure that the broad DLA absorption trough masks most of the strong Ly$\\alpha$ emission from the broad line region (BLR) of the quasar. When the Ly$\\alpha$ emission from the BLR is blocked by these so-called eclipsing DLAs, narrow Ly$\\alpha$ emission from the host galaxy could be revealed as a narrow emission line (NEL) in the D"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1804.07222","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":"1804.07222","created_at":"2026-05-18T00:17:02.971805+00:00"},{"alias_kind":"arxiv_version","alias_value":"1804.07222v1","created_at":"2026-05-18T00:17:02.971805+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1804.07222","created_at":"2026-05-18T00:17:02.971805+00:00"},{"alias_kind":"pith_short_12","alias_value":"GYW4N5RQLJYL","created_at":"2026-05-18T12:32:25.280505+00:00"},{"alias_kind":"pith_short_16","alias_value":"GYW4N5RQLJYLKQSI","created_at":"2026-05-18T12:32:25.280505+00:00"},{"alias_kind":"pith_short_8","alias_value":"GYW4N5RQ","created_at":"2026-05-18T12:32:25.280505+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/GYW4N5RQLJYLKQSIG2SCPTOHIL","json":"https://pith.science/pith/GYW4N5RQLJYLKQSIG2SCPTOHIL.json","graph_json":"https://pith.science/api/pith-number/GYW4N5RQLJYLKQSIG2SCPTOHIL/graph.json","events_json":"https://pith.science/api/pith-number/GYW4N5RQLJYLKQSIG2SCPTOHIL/events.json","paper":"https://pith.science/paper/GYW4N5RQ"},"agent_actions":{"view_html":"https://pith.science/pith/GYW4N5RQLJYLKQSIG2SCPTOHIL","download_json":"https://pith.science/pith/GYW4N5RQLJYLKQSIG2SCPTOHIL.json","view_paper":"https://pith.science/paper/GYW4N5RQ","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1804.07222&json=true","fetch_graph":"https://pith.science/api/pith-number/GYW4N5RQLJYLKQSIG2SCPTOHIL/graph.json","fetch_events":"https://pith.science/api/pith-number/GYW4N5RQLJYLKQSIG2SCPTOHIL/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/GYW4N5RQLJYLKQSIG2SCPTOHIL/action/timestamp_anchor","attest_storage":"https://pith.science/pith/GYW4N5RQLJYLKQSIG2SCPTOHIL/action/storage_attestation","attest_author":"https://pith.science/pith/GYW4N5RQLJYLKQSIG2SCPTOHIL/action/author_attestation","sign_citation":"https://pith.science/pith/GYW4N5RQLJYLKQSIG2SCPTOHIL/action/citation_signature","submit_replication":"https://pith.science/pith/GYW4N5RQLJYLKQSIG2SCPTOHIL/action/replication_record"}},"created_at":"2026-05-18T00:17:02.971805+00:00","updated_at":"2026-05-18T00:17:02.971805+00:00"}