{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:1998:WAF6LRPJXRKETKUSKQRXAGRHK7","short_pith_number":"pith:WAF6LRPJ","canonical_record":{"source":{"id":"astro-ph/9802103","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"astro-ph","submitted_at":"1998-02-09T16:11:11Z","cross_cats_sorted":[],"title_canon_sha256":"f9010a3343695e343637f38a15d7e47f3b0890d0d0d1bf9184421dcb6f95c6eb","abstract_canon_sha256":"4763d4f90d568f4c6617535f127d6ff93661614227408a414cb8ea5bfee902dd"},"schema_version":"1.0"},"canonical_sha256":"b00be5c5e9bc5449aa925423701a2757c1fadcd0d2e84b07f4732396c20c0821","source":{"kind":"arxiv","id":"astro-ph/9802103","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"astro-ph/9802103","created_at":"2026-07-04T16:06:09Z"},{"alias_kind":"arxiv_version","alias_value":"astro-ph/9802103v1","created_at":"2026-07-04T16:06:09Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.astro-ph/9802103","created_at":"2026-07-04T16:06:09Z"},{"alias_kind":"pith_short_12","alias_value":"WAF6LRPJXRKE","created_at":"2026-07-04T16:06:09Z"},{"alias_kind":"pith_short_16","alias_value":"WAF6LRPJXRKETKUS","created_at":"2026-07-04T16:06:09Z"},{"alias_kind":"pith_short_8","alias_value":"WAF6LRPJ","created_at":"2026-07-04T16:06:09Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:1998:WAF6LRPJXRKETKUSKQRXAGRHK7","target":"record","payload":{"canonical_record":{"source":{"id":"astro-ph/9802103","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"astro-ph","submitted_at":"1998-02-09T16:11:11Z","cross_cats_sorted":[],"title_canon_sha256":"f9010a3343695e343637f38a15d7e47f3b0890d0d0d1bf9184421dcb6f95c6eb","abstract_canon_sha256":"4763d4f90d568f4c6617535f127d6ff93661614227408a414cb8ea5bfee902dd"},"schema_version":"1.0"},"canonical_sha256":"b00be5c5e9bc5449aa925423701a2757c1fadcd0d2e84b07f4732396c20c0821","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-04T16:06:09.041364Z","signature_b64":"svglbpr4FLgZa/p6Vi+0uT5JOVoOEKkP6f8nAzmvmijtzPgW8oM7Iwy3QUBPLEHdPTgCu4U+wxfVZ0N1b2J8DA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"b00be5c5e9bc5449aa925423701a2757c1fadcd0d2e84b07f4732396c20c0821","last_reissued_at":"2026-07-04T16:06:09.040926Z","signature_status":"signed_v1","first_computed_at":"2026-07-04T16:06:09.040926Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"astro-ph/9802103","source_version":1,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-04T16:06:09Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"y5x/ZmMF6QBimvCEiRZfKIfuMQ3mwMWOmqnLjBemRGgJnWthn69EuGHOlBqAJw3W4dyFMCiwEqas+h5JNSKeAQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-10T14:47:44.600985Z"},"content_sha256":"55fed72bc233bf0d4537d5951d064cdbfd055605efed40d13980e09b5083f12e","schema_version":"1.0","event_id":"sha256:55fed72bc233bf0d4537d5951d064cdbfd055605efed40d13980e09b5083f12e"},{"event_type":"graph_snapshot","subject_pith_number":"pith:1998:WAF6LRPJXRKETKUSKQRXAGRHK7","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"On Uncertainties in Cross-Correlation Lags and the Reality of Wavelength-Dependent Continuum Lags in Active Galactic Nuclei","license":"","headline":"","cross_cats":[],"primary_cat":"astro-ph","authors_text":"Bradley M. Peterson, Dan Maoz, Ignaz Wanders, Keith Horne, Shai Kaspi, Stefan Collier, Tal Alexander","submitted_at":"1998-02-09T16:11:11Z","abstract_excerpt":"We describe a model-independent method of assessing the uncertainties in cross-correlation lags determined from AGN light curves, and use this method to investigate the reality of lags between UV and optical continuum variations in well-studied AGNs. Our results confirm the existence of such lags in NGC 7469. We find that the continuum variations at 1825 A, 4845 A, and 6962 A follow those at 1315A by 0.22^{+0.12}_{-0.13} days, 1.25^{+0.48}_{-0.35} days, and 1.84^{+0.93}_{-0.94} days, respectively, based on the centroids of the cross-correlation functions; the error intervals quoted correspond "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/9802103","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/9802103/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"},"verdict_id":null},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-04T16:06:09Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Y3hip5PJzz0uLSBDPrUYKG0iKJod36OXDIS8wcjjNtj7rjeV5JwVezL2ZrOqQBjB0ZbInUFE3lnCFrFMbNUYBw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-10T14:47:44.601505Z"},"content_sha256":"c614c713ec98ec4622999f386f306368383fac4beb02e557275501854fdc01bc","schema_version":"1.0","event_id":"sha256:c614c713ec98ec4622999f386f306368383fac4beb02e557275501854fdc01bc"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/WAF6LRPJXRKETKUSKQRXAGRHK7/bundle.json","state_url":"https://pith.science/pith/WAF6LRPJXRKETKUSKQRXAGRHK7/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/WAF6LRPJXRKETKUSKQRXAGRHK7/bundle.json","status":"primary"}],"public_keys":[{"key_id":"pith-v1-2026-05","algorithm":"ed25519","format":"raw","public_key_b64":"stVStoiQhXFxp4s2pdzPNoqVNBMojDU/fJ2db5S3CbM=","public_key_hex":"b2d552b68890857171a78b36a5dccf368a953413288c353f7c9d9d6f94b709b3","fingerprint_sha256_b32_first128bits":"RVFV5Z2OI2J3ZUO7ERDEBCYNKS","fingerprint_sha256_hex":"8d4b5ee74e4693bcd1df2446408b0d54","rotates_at":null,"url":"https://pith.science/pith-signing-key.json","notes":"Pith uses this Ed25519 key to sign canonical record SHA-256 digests. Verify with: ed25519_verify(public_key, message=canonical_sha256_bytes, signature=base64decode(signature_b64))."}],"merge_version":"pith-open-graph-merge-v1","built_at":"2026-08-10T14:47:44Z","links":{"resolver":"https://pith.science/pith/WAF6LRPJXRKETKUSKQRXAGRHK7","bundle":"https://pith.science/pith/WAF6LRPJXRKETKUSKQRXAGRHK7/bundle.json","state":"https://pith.science/pith/WAF6LRPJXRKETKUSKQRXAGRHK7/state.json","well_known_bundle":"https://pith.science/.well-known/pith/WAF6LRPJXRKETKUSKQRXAGRHK7/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:1998:WAF6LRPJXRKETKUSKQRXAGRHK7","merge_version":"pith-open-graph-merge-v1","event_count":2,"valid_event_count":2,"invalid_event_count":0,"equivocation_count":0,"current":{"canonical_record":{"metadata":{"abstract_canon_sha256":"4763d4f90d568f4c6617535f127d6ff93661614227408a414cb8ea5bfee902dd","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"1998-02-09T16:11:11Z","title_canon_sha256":"f9010a3343695e343637f38a15d7e47f3b0890d0d0d1bf9184421dcb6f95c6eb"},"schema_version":"1.0","source":{"id":"astro-ph/9802103","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"astro-ph/9802103","created_at":"2026-07-04T16:06:09Z"},{"alias_kind":"arxiv_version","alias_value":"astro-ph/9802103v1","created_at":"2026-07-04T16:06:09Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.astro-ph/9802103","created_at":"2026-07-04T16:06:09Z"},{"alias_kind":"pith_short_12","alias_value":"WAF6LRPJXRKE","created_at":"2026-07-04T16:06:09Z"},{"alias_kind":"pith_short_16","alias_value":"WAF6LRPJXRKETKUS","created_at":"2026-07-04T16:06:09Z"},{"alias_kind":"pith_short_8","alias_value":"WAF6LRPJ","created_at":"2026-07-04T16:06:09Z"}],"graph_snapshots":[{"event_id":"sha256:c614c713ec98ec4622999f386f306368383fac4beb02e557275501854fdc01bc","target":"graph","created_at":"2026-07-04T16:06:09Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"graph_snapshot":{"author_claims":{"count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","strong_count":0},"builder_version":"pith-number-builder-2026-05-17-v1","claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"integrity":{"available":true,"clean":true,"detectors_run":[],"endpoint":"/pith/astro-ph/9802103/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We describe a model-independent method of assessing the uncertainties in cross-correlation lags determined from AGN light curves, and use this method to investigate the reality of lags between UV and optical continuum variations in well-studied AGNs. Our results confirm the existence of such lags in NGC 7469. We find that the continuum variations at 1825 A, 4845 A, and 6962 A follow those at 1315A by 0.22^{+0.12}_{-0.13} days, 1.25^{+0.48}_{-0.35} days, and 1.84^{+0.93}_{-0.94} days, respectively, based on the centroids of the cross-correlation functions; the error intervals quoted correspond ","authors_text":"Bradley M. Peterson, Dan Maoz, Ignaz Wanders, Keith Horne, Shai Kaspi, Stefan Collier, Tal Alexander","cross_cats":[],"headline":"","license":"","primary_cat":"astro-ph","submitted_at":"1998-02-09T16:11:11Z","title":"On Uncertainties in Cross-Correlation Lags and the Reality of Wavelength-Dependent Continuum Lags in Active Galactic Nuclei"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/9802103","kind":"arxiv","version":1},"verdict":{"created_at":null,"id":null,"model_set":{},"one_line_summary":"","pipeline_version":null,"pith_extraction_headline":"","strongest_claim":"","weakest_assumption":""}},"verdict_id":null}}],"author_attestations":[],"timestamp_anchors":[],"storage_attestations":[],"citation_signatures":[],"replication_records":[],"corrections":[],"mirror_hints":[],"record_created":{"event_id":"sha256:55fed72bc233bf0d4537d5951d064cdbfd055605efed40d13980e09b5083f12e","target":"record","created_at":"2026-07-04T16:06:09Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"attestation_state":"computed","canonical_record":{"metadata":{"abstract_canon_sha256":"4763d4f90d568f4c6617535f127d6ff93661614227408a414cb8ea5bfee902dd","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"1998-02-09T16:11:11Z","title_canon_sha256":"f9010a3343695e343637f38a15d7e47f3b0890d0d0d1bf9184421dcb6f95c6eb"},"schema_version":"1.0","source":{"id":"astro-ph/9802103","kind":"arxiv","version":1}},"canonical_sha256":"b00be5c5e9bc5449aa925423701a2757c1fadcd0d2e84b07f4732396c20c0821","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"b00be5c5e9bc5449aa925423701a2757c1fadcd0d2e84b07f4732396c20c0821","first_computed_at":"2026-07-04T16:06:09.040926Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-04T16:06:09.040926Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"svglbpr4FLgZa/p6Vi+0uT5JOVoOEKkP6f8nAzmvmijtzPgW8oM7Iwy3QUBPLEHdPTgCu4U+wxfVZ0N1b2J8DA==","signature_status":"signed_v1","signed_at":"2026-07-04T16:06:09.041364Z","signed_message":"canonical_sha256_bytes"},"source_id":"astro-ph/9802103","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:55fed72bc233bf0d4537d5951d064cdbfd055605efed40d13980e09b5083f12e","sha256:c614c713ec98ec4622999f386f306368383fac4beb02e557275501854fdc01bc"],"state_sha256":"6cfbe79f93c2221c1d83f9ef4b5e930e7fd31d8b145111f6c4adcaf2825ac816"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"gDhY6s1y4qToDIIGW4HI/CW+pRqJQO/ubCNIkrgu7ZHfrCqF+/+nt0N6TVuZiNbIoIC4+97yn8Y6AZjx+hBPBg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-10T14:47:44.606212Z","bundle_sha256":"911466231f0ef3d171a6ebc89f58c884179b5dd64d1286fb7ef2929822d466b1"}}