{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2006:CFYORDNDMXCQEMUE4CQN4D5NAM","short_pith_number":"pith:CFYORDND","schema_version":"1.0","canonical_sha256":"1170e88da365c5023284e0a0de0fad033cd8fabe819ca4c1ffc791b38e308354","source":{"kind":"arxiv","id":"astro-ph/0609647","version":1},"attestation_state":"computed","paper":{"title":"Gravitationally Lensed QSOs: Optical Monitoring with the EOCA and the Liverpool Telescope (LT)","license":"","headline":"","cross_cats":[],"primary_cat":"astro-ph","authors_text":"A. Ullan (Univ. Cantabria, Australia), E. Koptelova (Moscow Univ., J. E. Ovaldsen (Univ. Oslo, L. J. Goicoechea, Norway), R. Gil-Merino (Univ. Sydney, Russia), Spain), Ukraine), V. N. Shalyapin (NAS","submitted_at":"2006-09-23T17:11:42Z","abstract_excerpt":"The aim of this contribution is to present the two first phases of the optical monitoring programme of the Gravitational Lenses group at the Universidad de Cantabria (GLUC, http://grupos.unican.es/glendama/). In an initial stage (2003 March-June), the Estacion de Observacion de Calar Alto (EOCA) was used to obtain VR frames of SBS 0909+532 and QSO 0957+561. These observations in 2003 led to accurate fluxes of the two components of both double QSOs, which are being compared and complemented with data from other 1-1.5 m telescopes located in the North Hemisphere: Fred Lawrence Whipple Observator"},"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":"astro-ph/0609647","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"astro-ph","submitted_at":"2006-09-23T17:11:42Z","cross_cats_sorted":[],"title_canon_sha256":"7e519ec10054a8f0eefbc2e02452873fbc4dc74bda1f316640a6a259416f8547","abstract_canon_sha256":"94037bc1cfb4735897bcf164a185c177f02bad820a31e1856d53cf27690c493c"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-04T14:56:22.633936Z","signature_b64":"vJpk8WqIBLooU9PoGugn0/6qN+nfzS+6/ckIvg2G6LY3G8i+Gjo2baHmfTH6l3pQSwE8zgbTRzVUsP//H19TDQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"1170e88da365c5023284e0a0de0fad033cd8fabe819ca4c1ffc791b38e308354","last_reissued_at":"2026-07-04T14:56:22.633479Z","signature_status":"signed_v1","first_computed_at":"2026-07-04T14:56:22.633479Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Gravitationally Lensed QSOs: Optical Monitoring with the EOCA and the Liverpool Telescope (LT)","license":"","headline":"","cross_cats":[],"primary_cat":"astro-ph","authors_text":"A. Ullan (Univ. Cantabria, Australia), E. Koptelova (Moscow Univ., J. E. Ovaldsen (Univ. Oslo, L. J. Goicoechea, Norway), R. Gil-Merino (Univ. Sydney, Russia), Spain), Ukraine), V. N. Shalyapin (NAS","submitted_at":"2006-09-23T17:11:42Z","abstract_excerpt":"The aim of this contribution is to present the two first phases of the optical monitoring programme of the Gravitational Lenses group at the Universidad de Cantabria (GLUC, http://grupos.unican.es/glendama/). In an initial stage (2003 March-June), the Estacion de Observacion de Calar Alto (EOCA) was used to obtain VR frames of SBS 0909+532 and QSO 0957+561. These observations in 2003 led to accurate fluxes of the two components of both double QSOs, which are being compared and complemented with data from other 1-1.5 m telescopes located in the North Hemisphere: Fred Lawrence Whipple Observator"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/0609647","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/astro-ph/0609647/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":"astro-ph/0609647","created_at":"2026-07-04T14:56:22.633542+00:00"},{"alias_kind":"arxiv_version","alias_value":"astro-ph/0609647v1","created_at":"2026-07-04T14:56:22.633542+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.astro-ph/0609647","created_at":"2026-07-04T14:56:22.633542+00:00"},{"alias_kind":"pith_short_12","alias_value":"CFYORDNDMXCQ","created_at":"2026-07-04T14:56:22.633542+00:00"},{"alias_kind":"pith_short_16","alias_value":"CFYORDNDMXCQEMUE","created_at":"2026-07-04T14:56:22.633542+00:00"},{"alias_kind":"pith_short_8","alias_value":"CFYORDND","created_at":"2026-07-04T14:56:22.633542+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/CFYORDNDMXCQEMUE4CQN4D5NAM","json":"https://pith.science/pith/CFYORDNDMXCQEMUE4CQN4D5NAM.json","graph_json":"https://pith.science/api/pith-number/CFYORDNDMXCQEMUE4CQN4D5NAM/graph.json","events_json":"https://pith.science/api/pith-number/CFYORDNDMXCQEMUE4CQN4D5NAM/events.json","paper":"https://pith.science/paper/CFYORDND"},"agent_actions":{"view_html":"https://pith.science/pith/CFYORDNDMXCQEMUE4CQN4D5NAM","download_json":"https://pith.science/pith/CFYORDNDMXCQEMUE4CQN4D5NAM.json","view_paper":"https://pith.science/paper/CFYORDND","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=astro-ph/0609647&json=true","fetch_graph":"https://pith.science/api/pith-number/CFYORDNDMXCQEMUE4CQN4D5NAM/graph.json","fetch_events":"https://pith.science/api/pith-number/CFYORDNDMXCQEMUE4CQN4D5NAM/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/CFYORDNDMXCQEMUE4CQN4D5NAM/action/timestamp_anchor","attest_storage":"https://pith.science/pith/CFYORDNDMXCQEMUE4CQN4D5NAM/action/storage_attestation","attest_author":"https://pith.science/pith/CFYORDNDMXCQEMUE4CQN4D5NAM/action/author_attestation","sign_citation":"https://pith.science/pith/CFYORDNDMXCQEMUE4CQN4D5NAM/action/citation_signature","submit_replication":"https://pith.science/pith/CFYORDNDMXCQEMUE4CQN4D5NAM/action/replication_record"}},"created_at":"2026-07-04T14:56:22.633542+00:00","updated_at":"2026-07-04T14:56:22.633542+00:00"}