{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2014:ABHTWIK2RDX4HOMNZXNFOQ3SRK","short_pith_number":"pith:ABHTWIK2","schema_version":"1.0","canonical_sha256":"004f3b215a88efc3b98dcdda5743728aaf415ccfd00db8a04921ab0c9fe2ecec","source":{"kind":"arxiv","id":"1409.8355","version":1},"attestation_state":"computed","paper":{"title":"The ensemble optical variability of type-1 AGN in the Sloan Digital Sky Survey Data Release 7","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.CO"],"primary_cat":"astro-ph.GA","authors_text":"Unai Gallastegui-Aizpun, Vicki L. Sarajedini","submitted_at":"2014-09-30T00:14:21Z","abstract_excerpt":"We use a sample of over 5000 active galactic nuclei (AGN) with extended morphologies at z<0.8 from the Sloan Digital Sky Survey (SDSS) to study the ensemble optical variability as a function of rest-frame time lag and AGN luminosity with the aim of investigating these parameter relationships at lower luminosities than previously studied. We compare photometry from imaging data with spectrophotometry obtained weeks to years later in the Sloan g, r, and i bands. We employ quasar and galaxy eigenspectra fitting to separate the AGN and host galaxy components. A strong correlation between the varia"},"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":"1409.8355","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2014-09-30T00:14:21Z","cross_cats_sorted":["astro-ph.CO"],"title_canon_sha256":"c2205e77575d6583ad56745f5447c879e4f10ff5504da76a71015e9afcdbfa81","abstract_canon_sha256":"f95930aef64e67ee0b97f53cfeeed667c2206b92dcbd7d05fc59b9430c6d393d"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:41:25.534102Z","signature_b64":"OPn530oKHwjQrqynZ1UxX5a2MKBUIaHKk8YINRGH8H+zJwxP6VVh9X3dJf3pwnqS99PKHejQkMUG0n3ldRpUBA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"004f3b215a88efc3b98dcdda5743728aaf415ccfd00db8a04921ab0c9fe2ecec","last_reissued_at":"2026-05-18T02:41:25.533628Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:41:25.533628Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"The ensemble optical variability of type-1 AGN in the Sloan Digital Sky Survey Data Release 7","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.CO"],"primary_cat":"astro-ph.GA","authors_text":"Unai Gallastegui-Aizpun, Vicki L. Sarajedini","submitted_at":"2014-09-30T00:14:21Z","abstract_excerpt":"We use a sample of over 5000 active galactic nuclei (AGN) with extended morphologies at z<0.8 from the Sloan Digital Sky Survey (SDSS) to study the ensemble optical variability as a function of rest-frame time lag and AGN luminosity with the aim of investigating these parameter relationships at lower luminosities than previously studied. We compare photometry from imaging data with spectrophotometry obtained weeks to years later in the Sloan g, r, and i bands. We employ quasar and galaxy eigenspectra fitting to separate the AGN and host galaxy components. A strong correlation between the varia"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1409.8355","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":"1409.8355","created_at":"2026-05-18T02:41:25.533693+00:00"},{"alias_kind":"arxiv_version","alias_value":"1409.8355v1","created_at":"2026-05-18T02:41:25.533693+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1409.8355","created_at":"2026-05-18T02:41:25.533693+00:00"},{"alias_kind":"pith_short_12","alias_value":"ABHTWIK2RDX4","created_at":"2026-05-18T12:28:19.803747+00:00"},{"alias_kind":"pith_short_16","alias_value":"ABHTWIK2RDX4HOMN","created_at":"2026-05-18T12:28:19.803747+00:00"},{"alias_kind":"pith_short_8","alias_value":"ABHTWIK2","created_at":"2026-05-18T12:28:19.803747+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/ABHTWIK2RDX4HOMNZXNFOQ3SRK","json":"https://pith.science/pith/ABHTWIK2RDX4HOMNZXNFOQ3SRK.json","graph_json":"https://pith.science/api/pith-number/ABHTWIK2RDX4HOMNZXNFOQ3SRK/graph.json","events_json":"https://pith.science/api/pith-number/ABHTWIK2RDX4HOMNZXNFOQ3SRK/events.json","paper":"https://pith.science/paper/ABHTWIK2"},"agent_actions":{"view_html":"https://pith.science/pith/ABHTWIK2RDX4HOMNZXNFOQ3SRK","download_json":"https://pith.science/pith/ABHTWIK2RDX4HOMNZXNFOQ3SRK.json","view_paper":"https://pith.science/paper/ABHTWIK2","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1409.8355&json=true","fetch_graph":"https://pith.science/api/pith-number/ABHTWIK2RDX4HOMNZXNFOQ3SRK/graph.json","fetch_events":"https://pith.science/api/pith-number/ABHTWIK2RDX4HOMNZXNFOQ3SRK/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/ABHTWIK2RDX4HOMNZXNFOQ3SRK/action/timestamp_anchor","attest_storage":"https://pith.science/pith/ABHTWIK2RDX4HOMNZXNFOQ3SRK/action/storage_attestation","attest_author":"https://pith.science/pith/ABHTWIK2RDX4HOMNZXNFOQ3SRK/action/author_attestation","sign_citation":"https://pith.science/pith/ABHTWIK2RDX4HOMNZXNFOQ3SRK/action/citation_signature","submit_replication":"https://pith.science/pith/ABHTWIK2RDX4HOMNZXNFOQ3SRK/action/replication_record"}},"created_at":"2026-05-18T02:41:25.533693+00:00","updated_at":"2026-05-18T02:41:25.533693+00:00"}