{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2013:EJKTV76KWBFF74B25OD2CFDSRC","merge_version":"pith-open-graph-merge-v1","event_count":2,"valid_event_count":2,"invalid_event_count":0,"equivocation_count":0,"current":{"canonical_record":{"metadata":{"abstract_canon_sha256":"140cce7d00d39859815c8ea437289cc4f4a98d82d8a5acfa3974f1d2815e4e09","cross_cats_sorted":["astro-ph.CO"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2013-08-12T20:06:59Z","title_canon_sha256":"43da0c37c6ca242bbf486e7dd1510d460ed3ddb280e779b63750a8c82d2a1042"},"schema_version":"1.0","source":{"id":"1308.2685","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1308.2685","created_at":"2026-05-18T01:48:16Z"},{"alias_kind":"arxiv_version","alias_value":"1308.2685v1","created_at":"2026-05-18T01:48:16Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1308.2685","created_at":"2026-05-18T01:48:16Z"},{"alias_kind":"pith_short_12","alias_value":"EJKTV76KWBFF","created_at":"2026-05-18T12:27:43Z"},{"alias_kind":"pith_short_16","alias_value":"EJKTV76KWBFF74B2","created_at":"2026-05-18T12:27:43Z"},{"alias_kind":"pith_short_8","alias_value":"EJKTV76K","created_at":"2026-05-18T12:27:43Z"}],"graph_snapshots":[{"event_id":"sha256:18c40d5d8332ee83f102ac1c1f779ffdce43d4d2142a0521a0a5ca2803d4accf","target":"graph","created_at":"2026-05-18T01:48:16Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"graph_snapshot":{"author_claims":{"count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","strong_count":0},"builder_version":"pith-number-builder-2026-05-17-v1","claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"paper":{"abstract_excerpt":"We searched quasar spectra from the SDSS-III Baryon Oscillation Spectroscopic Survey (BOSS) for the rare occurrences where a strong damped Lyman-alpha absorber (DLA) blocks the Broad Line Region emission from the quasar and acts as a natural coronagraph to reveal narrow Ly\\alpha\\ emission from the host galaxy. We define a statistical sample of 31 DLAs in Data Release 9 (DR9) with log N(HI) > 21.3 cm^-2 located at less than 1500 km s^-1 from the quasar redshift. In 25% (8) of these DLAs, a strong narrow Ly\\alpha\\ emission line is observed with flux ~25 x 10^-17 erg s^-1 cm^-2 on average. For DL","authors_text":"Adam D. Myers, Audrey Simmons, Daniel Oravetz, Dmitry Bizyaev, Donald P. Schneider, Elena Malanushenko, Garrett Ebelke, Hayley Finley, Howard Brewington, Isabelle P\\^aris, Jonathan Brinkmann, Kaike Pan, Nicholas P. Ross, Pasquier Noterdaeme, Patrick Petitjean, Stephanie Snedden, Viktor Malanushenko","cross_cats":["astro-ph.CO"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2013-08-12T20:06:59Z","title":"A glance at the host galaxy of high-redshift quasars using strong damped Lyman-alpha systems as coronagraphs"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1308.2685","kind":"arxiv","version":1},"verdict":{"created_at":null,"id":null,"model_set":{},"one_line_summary":"","pipeline_version":null,"pith_extraction_headline":"","strongest_claim":"","weakest_assumption":""}},"verdict_id":null}}],"author_attestations":[],"timestamp_anchors":[],"storage_attestations":[],"citation_signatures":[],"replication_records":[],"corrections":[],"mirror_hints":[],"record_created":{"event_id":"sha256:82a62ac38c4b1010e2cb79b783a67b9bfe1a0546b6b92c773098d4cf983fff31","target":"record","created_at":"2026-05-18T01:48:16Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"attestation_state":"computed","canonical_record":{"metadata":{"abstract_canon_sha256":"140cce7d00d39859815c8ea437289cc4f4a98d82d8a5acfa3974f1d2815e4e09","cross_cats_sorted":["astro-ph.CO"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2013-08-12T20:06:59Z","title_canon_sha256":"43da0c37c6ca242bbf486e7dd1510d460ed3ddb280e779b63750a8c82d2a1042"},"schema_version":"1.0","source":{"id":"1308.2685","kind":"arxiv","version":1}},"canonical_sha256":"22553affcab04a5ff03aeb87a1147288b76ea52c3ecac5df3d6d500021e6daf4","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"22553affcab04a5ff03aeb87a1147288b76ea52c3ecac5df3d6d500021e6daf4","first_computed_at":"2026-05-18T01:48:16.144426Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:48:16.144426Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"nwosTvD43hd7NxFeypNEsH2YezeofUOeuzrn+GV2OGwFV53jE9YVqNWxTDUX1JcD9NuNEC4V3VvtMKHNajxwBQ==","signature_status":"signed_v1","signed_at":"2026-05-18T01:48:16.145082Z","signed_message":"canonical_sha256_bytes"},"source_id":"1308.2685","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:82a62ac38c4b1010e2cb79b783a67b9bfe1a0546b6b92c773098d4cf983fff31","sha256:18c40d5d8332ee83f102ac1c1f779ffdce43d4d2142a0521a0a5ca2803d4accf"],"state_sha256":"a016bfcaa5db22e516532ef1603b3703a084caf7612e7283c92c5e07797df93f"}