{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2010:PFH24OYDEUGNB5TQKEG6KZFF5A","short_pith_number":"pith:PFH24OYD","schema_version":"1.0","canonical_sha256":"794fae3b03250cd0f670510de564a5e8230f6e9be10558cf52f1d96e5fa86413","source":{"kind":"arxiv","id":"1008.4156","version":1},"attestation_state":"computed","paper":{"title":"RXJ 0921+4529: a binary quasar or gravitational lens?","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.CO","authors_text":"A. V. Moiseev, D. Ili\\'c, E. Mediavilla, J. Kova\\v{c}evi\\'c, J. Mu\\~noz, L. \\v{C}. Popovi\\'c, P. Jovanovi\\'c","submitted_at":"2010-08-24T21:27:03Z","abstract_excerpt":"We report the new spectroscopic observations of the gravitational lens RXJ 021+4529 with the multi-mode focal reducer SCORPIO of the SAO RAS 6-m telescope. The new spectral observations were compared with the previously observed spectra of components A and B of RXJ 0921+4529, i.e. the same components observed in different epochs. We found a significant difference in the spectrum between the components that cannot be explained with microlensing and/or spectral variation. We conclude that RXJ 0921+4529 is a binary quasar system, where redshifts of quasars A and B are 1.6535 +/- 0.0005 and 1.6625"},"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":"1008.4156","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2010-08-24T21:27:03Z","cross_cats_sorted":[],"title_canon_sha256":"f578420650f1f9f528ef0e8a2d461732e47235622d9c1de22125f5ca7dab733b","abstract_canon_sha256":"abc21a3e0d18de8c8687828c3d1b14c58aabf859ee4c1a2ab3f6fa8d0c75e878"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:09:23.628883Z","signature_b64":"ghiVGhurFFKhXAl8jm9Ml6ERGGewJupra0lK2Ff/c1HgRvk3FIqcI0yJ1XYrVvaCINm37TEd+1t8cIPg9Dq+DA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"794fae3b03250cd0f670510de564a5e8230f6e9be10558cf52f1d96e5fa86413","last_reissued_at":"2026-05-18T01:09:23.628527Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:09:23.628527Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"RXJ 0921+4529: a binary quasar or gravitational lens?","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.CO","authors_text":"A. V. Moiseev, D. Ili\\'c, E. Mediavilla, J. Kova\\v{c}evi\\'c, J. Mu\\~noz, L. \\v{C}. Popovi\\'c, P. Jovanovi\\'c","submitted_at":"2010-08-24T21:27:03Z","abstract_excerpt":"We report the new spectroscopic observations of the gravitational lens RXJ 021+4529 with the multi-mode focal reducer SCORPIO of the SAO RAS 6-m telescope. The new spectral observations were compared with the previously observed spectra of components A and B of RXJ 0921+4529, i.e. the same components observed in different epochs. We found a significant difference in the spectrum between the components that cannot be explained with microlensing and/or spectral variation. We conclude that RXJ 0921+4529 is a binary quasar system, where redshifts of quasars A and B are 1.6535 +/- 0.0005 and 1.6625"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1008.4156","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":"1008.4156","created_at":"2026-05-18T01:09:23.628586+00:00"},{"alias_kind":"arxiv_version","alias_value":"1008.4156v1","created_at":"2026-05-18T01:09:23.628586+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1008.4156","created_at":"2026-05-18T01:09:23.628586+00:00"},{"alias_kind":"pith_short_12","alias_value":"PFH24OYDEUGN","created_at":"2026-05-18T12:26:12.377268+00:00"},{"alias_kind":"pith_short_16","alias_value":"PFH24OYDEUGNB5TQ","created_at":"2026-05-18T12:26:12.377268+00:00"},{"alias_kind":"pith_short_8","alias_value":"PFH24OYD","created_at":"2026-05-18T12:26:12.377268+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/PFH24OYDEUGNB5TQKEG6KZFF5A","json":"https://pith.science/pith/PFH24OYDEUGNB5TQKEG6KZFF5A.json","graph_json":"https://pith.science/api/pith-number/PFH24OYDEUGNB5TQKEG6KZFF5A/graph.json","events_json":"https://pith.science/api/pith-number/PFH24OYDEUGNB5TQKEG6KZFF5A/events.json","paper":"https://pith.science/paper/PFH24OYD"},"agent_actions":{"view_html":"https://pith.science/pith/PFH24OYDEUGNB5TQKEG6KZFF5A","download_json":"https://pith.science/pith/PFH24OYDEUGNB5TQKEG6KZFF5A.json","view_paper":"https://pith.science/paper/PFH24OYD","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1008.4156&json=true","fetch_graph":"https://pith.science/api/pith-number/PFH24OYDEUGNB5TQKEG6KZFF5A/graph.json","fetch_events":"https://pith.science/api/pith-number/PFH24OYDEUGNB5TQKEG6KZFF5A/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/PFH24OYDEUGNB5TQKEG6KZFF5A/action/timestamp_anchor","attest_storage":"https://pith.science/pith/PFH24OYDEUGNB5TQKEG6KZFF5A/action/storage_attestation","attest_author":"https://pith.science/pith/PFH24OYDEUGNB5TQKEG6KZFF5A/action/author_attestation","sign_citation":"https://pith.science/pith/PFH24OYDEUGNB5TQKEG6KZFF5A/action/citation_signature","submit_replication":"https://pith.science/pith/PFH24OYDEUGNB5TQKEG6KZFF5A/action/replication_record"}},"created_at":"2026-05-18T01:09:23.628586+00:00","updated_at":"2026-05-18T01:09:23.628586+00:00"}