{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2016:LLFEILW73PB2HJDMC3BBNYIRL2","short_pith_number":"pith:LLFEILW7","schema_version":"1.0","canonical_sha256":"5aca442edfdbc3a3a46c16c216e1115ead668c813b3e790de1e42a0b5342e107","source":{"kind":"arxiv","id":"1607.03771","version":1},"attestation_state":"computed","paper":{"title":"Evidence for quasi-periodic oscillations in the optical polarization of the blazar PKS 2155-304","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.HE","authors_text":"A. R. Taylor, N. W. Pekeur, R. C. Kraan-Korteweg, S. B. Potter","submitted_at":"2016-07-13T14:34:52Z","abstract_excerpt":"Evidence for the presence of quasi-periodic oscillations (QPOs) in the optical polarization of the blazar PKS 2155-304, during a period of enhanced gamma-ray brightness, is presented. The periodogram of the polarized flux revealed the existence of a prominent peak at $T\\sim 13$ min, detected at >99.7% significance, and $T\\sim 30$ min, which was nominally significant at >99%. This is the first evidence of QPOs in the polarization of an active galactic nucleus, potentially opening up a new avenue of studying this phenomenon."},"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":"1607.03771","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2016-07-13T14:34:52Z","cross_cats_sorted":[],"title_canon_sha256":"564b8015c6075410f073ceffa86468e631acfd604706d8681167018b91600b85","abstract_canon_sha256":"74efa9a5c60a977b27e8f094dc032f15dbd8b4c9af31a2a76494616758f7d978"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:10:01.783442Z","signature_b64":"4kwQYleGPIo5HiY1aoCHNvMqjKBXXrKVTnx3/1VGWfoZk/5iSKC/TIm8xCIMJVJ+J1GKczG/mDx4Mu5Vhd6dCA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"5aca442edfdbc3a3a46c16c216e1115ead668c813b3e790de1e42a0b5342e107","last_reissued_at":"2026-05-18T01:10:01.782823Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:10:01.782823Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Evidence for quasi-periodic oscillations in the optical polarization of the blazar PKS 2155-304","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.HE","authors_text":"A. R. Taylor, N. W. Pekeur, R. C. Kraan-Korteweg, S. B. Potter","submitted_at":"2016-07-13T14:34:52Z","abstract_excerpt":"Evidence for the presence of quasi-periodic oscillations (QPOs) in the optical polarization of the blazar PKS 2155-304, during a period of enhanced gamma-ray brightness, is presented. The periodogram of the polarized flux revealed the existence of a prominent peak at $T\\sim 13$ min, detected at >99.7% significance, and $T\\sim 30$ min, which was nominally significant at >99%. This is the first evidence of QPOs in the polarization of an active galactic nucleus, potentially opening up a new avenue of studying this phenomenon."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1607.03771","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":"1607.03771","created_at":"2026-05-18T01:10:01.782919+00:00"},{"alias_kind":"arxiv_version","alias_value":"1607.03771v1","created_at":"2026-05-18T01:10:01.782919+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1607.03771","created_at":"2026-05-18T01:10:01.782919+00:00"},{"alias_kind":"pith_short_12","alias_value":"LLFEILW73PB2","created_at":"2026-05-18T12:30:29.479603+00:00"},{"alias_kind":"pith_short_16","alias_value":"LLFEILW73PB2HJDM","created_at":"2026-05-18T12:30:29.479603+00:00"},{"alias_kind":"pith_short_8","alias_value":"LLFEILW7","created_at":"2026-05-18T12:30:29.479603+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/LLFEILW73PB2HJDMC3BBNYIRL2","json":"https://pith.science/pith/LLFEILW73PB2HJDMC3BBNYIRL2.json","graph_json":"https://pith.science/api/pith-number/LLFEILW73PB2HJDMC3BBNYIRL2/graph.json","events_json":"https://pith.science/api/pith-number/LLFEILW73PB2HJDMC3BBNYIRL2/events.json","paper":"https://pith.science/paper/LLFEILW7"},"agent_actions":{"view_html":"https://pith.science/pith/LLFEILW73PB2HJDMC3BBNYIRL2","download_json":"https://pith.science/pith/LLFEILW73PB2HJDMC3BBNYIRL2.json","view_paper":"https://pith.science/paper/LLFEILW7","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1607.03771&json=true","fetch_graph":"https://pith.science/api/pith-number/LLFEILW73PB2HJDMC3BBNYIRL2/graph.json","fetch_events":"https://pith.science/api/pith-number/LLFEILW73PB2HJDMC3BBNYIRL2/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/LLFEILW73PB2HJDMC3BBNYIRL2/action/timestamp_anchor","attest_storage":"https://pith.science/pith/LLFEILW73PB2HJDMC3BBNYIRL2/action/storage_attestation","attest_author":"https://pith.science/pith/LLFEILW73PB2HJDMC3BBNYIRL2/action/author_attestation","sign_citation":"https://pith.science/pith/LLFEILW73PB2HJDMC3BBNYIRL2/action/citation_signature","submit_replication":"https://pith.science/pith/LLFEILW73PB2HJDMC3BBNYIRL2/action/replication_record"}},"created_at":"2026-05-18T01:10:01.782919+00:00","updated_at":"2026-05-18T01:10:01.782919+00:00"}