{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2020:NIC3HP6TI5JPIYEM24GFXR4HBB","short_pith_number":"pith:NIC3HP6T","schema_version":"1.0","canonical_sha256":"6a05b3bfd34752f4608cd70c5bc787087af03aa1e3ebe5ed9a12934651bd75dd","source":{"kind":"arxiv","id":"2012.03984","version":2},"attestation_state":"computed","paper":{"title":"UV absorption lines and their potential for tracing the Lyman continuum escape fraction","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.GA","authors_text":"A. Verhamme, J. Blaizot, J. Rosdahl, L. Michel-Dansac, T. Garel, T. Kimm, V. Mauerhofer","submitted_at":"2020-12-07T19:00:50Z","abstract_excerpt":"The neutral intergalactic medium above redshift 6 is opaque to ionizing radiation, therefore one needs indirect measurements of the escape fraction of ionizing photons from galaxies of this epoch. Low-ionization state absorption lines are a common feature in the spectrum of galaxies, showing a diversity of strengths and shapes. Since these lines indicate the presence of neutral gas in front of the stars, they have been proposed to carry information on the escape of ionizing radiation from galaxies. We study which processes are responsible for the shape of the absorption lines, to better unders"},"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":"2012.03984","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2020-12-07T19:00:50Z","cross_cats_sorted":[],"title_canon_sha256":"c6ed59418248ca4b57b96dad40efd52c84e69f0f339da196a8a886592d54dfa3","abstract_canon_sha256":"4d49a02239bc94aba144a255b5d6ceba1490fc0edf15439a0dcb41462604c6b1"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T02:13:56.650487Z","signature_b64":"ijl1un6pcvF5pPuVQXbpJ7u3ya+N96YF7vgCfwFAIXzwC4HmXb1lacpkVve1+Xq1DaQBHKoAh4QkhhVt/1IwDQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"6a05b3bfd34752f4608cd70c5bc787087af03aa1e3ebe5ed9a12934651bd75dd","last_reissued_at":"2026-07-05T02:13:56.649967Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T02:13:56.649967Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"UV absorption lines and their potential for tracing the Lyman continuum escape fraction","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.GA","authors_text":"A. Verhamme, J. Blaizot, J. Rosdahl, L. Michel-Dansac, T. Garel, T. Kimm, V. Mauerhofer","submitted_at":"2020-12-07T19:00:50Z","abstract_excerpt":"The neutral intergalactic medium above redshift 6 is opaque to ionizing radiation, therefore one needs indirect measurements of the escape fraction of ionizing photons from galaxies of this epoch. Low-ionization state absorption lines are a common feature in the spectrum of galaxies, showing a diversity of strengths and shapes. Since these lines indicate the presence of neutral gas in front of the stars, they have been proposed to carry information on the escape of ionizing radiation from galaxies. We study which processes are responsible for the shape of the absorption lines, to better unders"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2012.03984","kind":"arxiv","version":2},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2012.03984/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"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":"2012.03984","created_at":"2026-07-05T02:13:56.650025+00:00"},{"alias_kind":"arxiv_version","alias_value":"2012.03984v2","created_at":"2026-07-05T02:13:56.650025+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2012.03984","created_at":"2026-07-05T02:13:56.650025+00:00"},{"alias_kind":"pith_short_12","alias_value":"NIC3HP6TI5JP","created_at":"2026-07-05T02:13:56.650025+00:00"},{"alias_kind":"pith_short_16","alias_value":"NIC3HP6TI5JPIYEM","created_at":"2026-07-05T02:13:56.650025+00:00"},{"alias_kind":"pith_short_8","alias_value":"NIC3HP6T","created_at":"2026-07-05T02:13:56.650025+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/NIC3HP6TI5JPIYEM24GFXR4HBB","json":"https://pith.science/pith/NIC3HP6TI5JPIYEM24GFXR4HBB.json","graph_json":"https://pith.science/api/pith-number/NIC3HP6TI5JPIYEM24GFXR4HBB/graph.json","events_json":"https://pith.science/api/pith-number/NIC3HP6TI5JPIYEM24GFXR4HBB/events.json","paper":"https://pith.science/paper/NIC3HP6T"},"agent_actions":{"view_html":"https://pith.science/pith/NIC3HP6TI5JPIYEM24GFXR4HBB","download_json":"https://pith.science/pith/NIC3HP6TI5JPIYEM24GFXR4HBB.json","view_paper":"https://pith.science/paper/NIC3HP6T","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=2012.03984&json=true","fetch_graph":"https://pith.science/api/pith-number/NIC3HP6TI5JPIYEM24GFXR4HBB/graph.json","fetch_events":"https://pith.science/api/pith-number/NIC3HP6TI5JPIYEM24GFXR4HBB/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/NIC3HP6TI5JPIYEM24GFXR4HBB/action/timestamp_anchor","attest_storage":"https://pith.science/pith/NIC3HP6TI5JPIYEM24GFXR4HBB/action/storage_attestation","attest_author":"https://pith.science/pith/NIC3HP6TI5JPIYEM24GFXR4HBB/action/author_attestation","sign_citation":"https://pith.science/pith/NIC3HP6TI5JPIYEM24GFXR4HBB/action/citation_signature","submit_replication":"https://pith.science/pith/NIC3HP6TI5JPIYEM24GFXR4HBB/action/replication_record"}},"created_at":"2026-07-05T02:13:56.650025+00:00","updated_at":"2026-07-05T02:13:56.650025+00:00"}