{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2017:LJ5VHG4CBFSCFW2QWVP6CJNDMH","short_pith_number":"pith:LJ5VHG4C","schema_version":"1.0","canonical_sha256":"5a7b539b82096422db50b55fe125a361f4db764ce78c695e9949bfa94ce34ce3","source":{"kind":"arxiv","id":"1701.01490","version":1},"attestation_state":"computed","paper":{"title":"Long-term optical spectral monitoring of NGC 7469","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.CO"],"primary_cat":"astro-ph.GA","authors_text":"A. Kovacevi\\'c, Alla I. Shapovalova, A. N. Burenkov, D. Ili\\'c, J. R. Valdes, L. Carrasco, L. C. Popovi\\'c, N. G. Bochkarev, O. Spiridonova, V. E. Zhdanova, V. H. Chavushyan, V. L. Afanasiev, V. Patino-Alvarez, W. Kollatschny","submitted_at":"2017-01-05T21:56:52Z","abstract_excerpt":"We present the results of the long-term (20-year period, from 1996 to 2015) optical spectral monitoring of the Seyfert 1 galaxy NGC 7469. The variation in the light-curves of the broad He II {\\lambda}4686A H{\\beta} and H{\\alpha} lines, and the continuum at 5100A and 6300A have been explored. The maximum of activity was in 1998, and the variability in the continuum and lines seems to have two periods of around 1200 and 2600 days, however these periodicities should be taken with caution because of the red-noise. Beside these periods, there are several short-term (1-5 days) flare-like events in t"},"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":"1701.01490","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2017-01-05T21:56:52Z","cross_cats_sorted":["astro-ph.CO"],"title_canon_sha256":"1589b515590fb4c8721699dac144fb4e0c9ae508fd3ecaf1e436779b47ff0028","abstract_canon_sha256":"125404aa4f271ee78314f483eae95ba18df89f88faed987019c0c118dfbb3edd"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:53:16.708182Z","signature_b64":"BfjZq2GA4O5Hafza8MdfCy3HTPp/w75/QTia8/CoQ1cI27srYAO1CBRyifaRHNZfdapvCTEHA0WoxzTQb7g9Cw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"5a7b539b82096422db50b55fe125a361f4db764ce78c695e9949bfa94ce34ce3","last_reissued_at":"2026-05-18T00:53:16.707604Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:53:16.707604Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Long-term optical spectral monitoring of NGC 7469","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.CO"],"primary_cat":"astro-ph.GA","authors_text":"A. Kovacevi\\'c, Alla I. Shapovalova, A. N. Burenkov, D. Ili\\'c, J. R. Valdes, L. Carrasco, L. C. Popovi\\'c, N. G. Bochkarev, O. Spiridonova, V. E. Zhdanova, V. H. Chavushyan, V. L. Afanasiev, V. Patino-Alvarez, W. Kollatschny","submitted_at":"2017-01-05T21:56:52Z","abstract_excerpt":"We present the results of the long-term (20-year period, from 1996 to 2015) optical spectral monitoring of the Seyfert 1 galaxy NGC 7469. The variation in the light-curves of the broad He II {\\lambda}4686A H{\\beta} and H{\\alpha} lines, and the continuum at 5100A and 6300A have been explored. The maximum of activity was in 1998, and the variability in the continuum and lines seems to have two periods of around 1200 and 2600 days, however these periodicities should be taken with caution because of the red-noise. Beside these periods, there are several short-term (1-5 days) flare-like events in t"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1701.01490","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":"1701.01490","created_at":"2026-05-18T00:53:16.707702+00:00"},{"alias_kind":"arxiv_version","alias_value":"1701.01490v1","created_at":"2026-05-18T00:53:16.707702+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1701.01490","created_at":"2026-05-18T00:53:16.707702+00:00"},{"alias_kind":"pith_short_12","alias_value":"LJ5VHG4CBFSC","created_at":"2026-05-18T12:31:28.150371+00:00"},{"alias_kind":"pith_short_16","alias_value":"LJ5VHG4CBFSCFW2Q","created_at":"2026-05-18T12:31:28.150371+00:00"},{"alias_kind":"pith_short_8","alias_value":"LJ5VHG4C","created_at":"2026-05-18T12:31:28.150371+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/LJ5VHG4CBFSCFW2QWVP6CJNDMH","json":"https://pith.science/pith/LJ5VHG4CBFSCFW2QWVP6CJNDMH.json","graph_json":"https://pith.science/api/pith-number/LJ5VHG4CBFSCFW2QWVP6CJNDMH/graph.json","events_json":"https://pith.science/api/pith-number/LJ5VHG4CBFSCFW2QWVP6CJNDMH/events.json","paper":"https://pith.science/paper/LJ5VHG4C"},"agent_actions":{"view_html":"https://pith.science/pith/LJ5VHG4CBFSCFW2QWVP6CJNDMH","download_json":"https://pith.science/pith/LJ5VHG4CBFSCFW2QWVP6CJNDMH.json","view_paper":"https://pith.science/paper/LJ5VHG4C","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1701.01490&json=true","fetch_graph":"https://pith.science/api/pith-number/LJ5VHG4CBFSCFW2QWVP6CJNDMH/graph.json","fetch_events":"https://pith.science/api/pith-number/LJ5VHG4CBFSCFW2QWVP6CJNDMH/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/LJ5VHG4CBFSCFW2QWVP6CJNDMH/action/timestamp_anchor","attest_storage":"https://pith.science/pith/LJ5VHG4CBFSCFW2QWVP6CJNDMH/action/storage_attestation","attest_author":"https://pith.science/pith/LJ5VHG4CBFSCFW2QWVP6CJNDMH/action/author_attestation","sign_citation":"https://pith.science/pith/LJ5VHG4CBFSCFW2QWVP6CJNDMH/action/citation_signature","submit_replication":"https://pith.science/pith/LJ5VHG4CBFSCFW2QWVP6CJNDMH/action/replication_record"}},"created_at":"2026-05-18T00:53:16.707702+00:00","updated_at":"2026-05-18T00:53:16.707702+00:00"}