{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2012:7MMKCNLYHSL6CAHFGASWOH56D3","short_pith_number":"pith:7MMKCNLY","schema_version":"1.0","canonical_sha256":"fb18a135783c97e100e53025671fbe1efca70238da4ee6e0e87a892a941184af","source":{"kind":"arxiv","id":"1204.6048","version":1},"attestation_state":"computed","paper":{"title":"Variability in Quasar Broad Absorption Line Outflows","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.CO","authors_text":"Daniel M. Capellupo, Fred Hamann, Joseph C. Shields, Jules Halpern, Paola Rodr\\'iguez Hidalgo, Tom A. Barlow","submitted_at":"2012-04-26T20:08:19Z","abstract_excerpt":"Broad absorption lines (BALs) in quasar spectra identify high velocity outflows that likely exist in all quasars and could play a major role in feedback to galaxy evolution. Studying the variability in these BALs can help us understand the structure, evolution, and basic physical properties of these outflows. We are conducting a BAL monitoring program, which so far includes 163 spectra of 24 luminous quasars, covering time-scales from \\sim 1 week to 8 years in the quasar rest-frame. We investigate changes in both the CIV {\\lambda}1550 and SiIV {\\lambda}1400 BALs, and we report here on some of "},"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":"1204.6048","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2012-04-26T20:08:19Z","cross_cats_sorted":[],"title_canon_sha256":"526efdf09955b5339a3cec8e8c978ed76b1beeec17969a160d9da26a444f8405","abstract_canon_sha256":"3aeaf624dc1463756f129d626b2e0360974512fd9a40c743b6e450e17001854d"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T03:56:47.228587Z","signature_b64":"JlorAe6sqQ4PJGBiVoBMNq5hl0EUR4ZYVfVRN3Bofbyvv7l5Xt/5DYpYQUJo/TXB7X777TVwfbTNjAueRb5rAg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"fb18a135783c97e100e53025671fbe1efca70238da4ee6e0e87a892a941184af","last_reissued_at":"2026-05-18T03:56:47.227971Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T03:56:47.227971Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Variability in Quasar Broad Absorption Line Outflows","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.CO","authors_text":"Daniel M. Capellupo, Fred Hamann, Joseph C. Shields, Jules Halpern, Paola Rodr\\'iguez Hidalgo, Tom A. Barlow","submitted_at":"2012-04-26T20:08:19Z","abstract_excerpt":"Broad absorption lines (BALs) in quasar spectra identify high velocity outflows that likely exist in all quasars and could play a major role in feedback to galaxy evolution. Studying the variability in these BALs can help us understand the structure, evolution, and basic physical properties of these outflows. We are conducting a BAL monitoring program, which so far includes 163 spectra of 24 luminous quasars, covering time-scales from \\sim 1 week to 8 years in the quasar rest-frame. We investigate changes in both the CIV {\\lambda}1550 and SiIV {\\lambda}1400 BALs, and we report here on some of "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1204.6048","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":"1204.6048","created_at":"2026-05-18T03:56:47.228063+00:00"},{"alias_kind":"arxiv_version","alias_value":"1204.6048v1","created_at":"2026-05-18T03:56:47.228063+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1204.6048","created_at":"2026-05-18T03:56:47.228063+00:00"},{"alias_kind":"pith_short_12","alias_value":"7MMKCNLYHSL6","created_at":"2026-05-18T12:26:58.693483+00:00"},{"alias_kind":"pith_short_16","alias_value":"7MMKCNLYHSL6CAHF","created_at":"2026-05-18T12:26:58.693483+00:00"},{"alias_kind":"pith_short_8","alias_value":"7MMKCNLY","created_at":"2026-05-18T12:26:58.693483+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/7MMKCNLYHSL6CAHFGASWOH56D3","json":"https://pith.science/pith/7MMKCNLYHSL6CAHFGASWOH56D3.json","graph_json":"https://pith.science/api/pith-number/7MMKCNLYHSL6CAHFGASWOH56D3/graph.json","events_json":"https://pith.science/api/pith-number/7MMKCNLYHSL6CAHFGASWOH56D3/events.json","paper":"https://pith.science/paper/7MMKCNLY"},"agent_actions":{"view_html":"https://pith.science/pith/7MMKCNLYHSL6CAHFGASWOH56D3","download_json":"https://pith.science/pith/7MMKCNLYHSL6CAHFGASWOH56D3.json","view_paper":"https://pith.science/paper/7MMKCNLY","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1204.6048&json=true","fetch_graph":"https://pith.science/api/pith-number/7MMKCNLYHSL6CAHFGASWOH56D3/graph.json","fetch_events":"https://pith.science/api/pith-number/7MMKCNLYHSL6CAHFGASWOH56D3/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/7MMKCNLYHSL6CAHFGASWOH56D3/action/timestamp_anchor","attest_storage":"https://pith.science/pith/7MMKCNLYHSL6CAHFGASWOH56D3/action/storage_attestation","attest_author":"https://pith.science/pith/7MMKCNLYHSL6CAHFGASWOH56D3/action/author_attestation","sign_citation":"https://pith.science/pith/7MMKCNLYHSL6CAHFGASWOH56D3/action/citation_signature","submit_replication":"https://pith.science/pith/7MMKCNLYHSL6CAHFGASWOH56D3/action/replication_record"}},"created_at":"2026-05-18T03:56:47.228063+00:00","updated_at":"2026-05-18T03:56:47.228063+00:00"}