{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2008:CGSPAQRXI2BG33TBVDZHFSZQOG","short_pith_number":"pith:CGSPAQRX","canonical_record":{"source":{"id":"0812.0810","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph","submitted_at":"2008-12-03T21:01:16Z","cross_cats_sorted":[],"title_canon_sha256":"9cc5fb227b498da4df595330ba14c98ced5fa210d10cbcaf2f408c513f404c9c","abstract_canon_sha256":"d3013aa8851c3e39b945b21f6ac6bb993c0f24824613f96cbee8fb1a5350b61c"},"schema_version":"1.0"},"canonical_sha256":"11a4f0423746826dee61a8f272cb30719130b21653c10493859d21bfb1009d16","source":{"kind":"arxiv","id":"0812.0810","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0812.0810","created_at":"2026-05-18T04:30:35Z"},{"alias_kind":"arxiv_version","alias_value":"0812.0810v1","created_at":"2026-05-18T04:30:35Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0812.0810","created_at":"2026-05-18T04:30:35Z"},{"alias_kind":"pith_short_12","alias_value":"CGSPAQRXI2BG","created_at":"2026-05-18T12:25:57Z"},{"alias_kind":"pith_short_16","alias_value":"CGSPAQRXI2BG33TB","created_at":"2026-05-18T12:25:57Z"},{"alias_kind":"pith_short_8","alias_value":"CGSPAQRX","created_at":"2026-05-18T12:25:57Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2008:CGSPAQRXI2BG33TBVDZHFSZQOG","target":"record","payload":{"canonical_record":{"source":{"id":"0812.0810","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph","submitted_at":"2008-12-03T21:01:16Z","cross_cats_sorted":[],"title_canon_sha256":"9cc5fb227b498da4df595330ba14c98ced5fa210d10cbcaf2f408c513f404c9c","abstract_canon_sha256":"d3013aa8851c3e39b945b21f6ac6bb993c0f24824613f96cbee8fb1a5350b61c"},"schema_version":"1.0"},"canonical_sha256":"11a4f0423746826dee61a8f272cb30719130b21653c10493859d21bfb1009d16","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T04:30:35.358089Z","signature_b64":"B7rd3QB+wEXc3eZDP+1kUETYtqG/ikPNq5PJdu+OIAjXi58sNj62eLD0orSI+dMPjo3T+g+u91e5fmg0s3NZBw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"11a4f0423746826dee61a8f272cb30719130b21653c10493859d21bfb1009d16","last_reissued_at":"2026-05-18T04:30:35.357478Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T04:30:35.357478Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"0812.0810","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":"2026-05-18T04:30:35Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"8OMuxu2RX16jTlSiyu9HZIPS4poCd8n/kuleovU/K6xCrmKzu0NUGiTYZBfeQFu9mdFU7LSOQ1wocs0uupEgBg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-25T15:48:01.398539Z"},"content_sha256":"33add3c258d223046b140b224878cdc6930f9532d4586750402720445b515a64","schema_version":"1.0","event_id":"sha256:33add3c258d223046b140b224878cdc6930f9532d4586750402720445b515a64"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2008:CGSPAQRXI2BG33TBVDZHFSZQOG","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Long term optical and X-ray variability of the Seyfert galaxy Markarian 79","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph","authors_text":"(1) P. Uttley (1), (2) CrAO, 3), (3) Isaac Newton Institute of Chile, (4) Tokyo, (6) Michigan, (7) St. Andrews, C. M. Gaskell (5), E. Breedt (1), E. M. Cackett (6), I. M. McHardy, Japan (5) Texas, K. Horne (7), P. Ar\\'evalo (1), S. G. Sergeev (2, S. Koshida (4) ((1) Southampton, T. Minezaki (4), UK, UK), Ukraine, USA, Y. Yoshii (4)","submitted_at":"2008-12-03T21:01:16Z","abstract_excerpt":"We present the results of concurrent X-ray and optical monitoring of the Seyfert 1 galaxy Mrk 79 over a period of more than five years. We find that on short to medium time-scales (days to a few tens of days) the 2-10 keV X-ray and optical u and V band fluxes are significantly correlated, with a delay between the bands consistent with zero days. We show that most of these variations may be well reproduced by a model where the short-term optical variations originate from reprocessing of X-rays by an optically thick accretion disc. The optical light curves, however, also display long time-scale "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0812.0810","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"},"verdict_id":null},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T04:30:35Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"B5WND88mIeVHKxZjszCgSnW8O0JUcdCYP+ZrWkStk2zD4KPUkx7AQVUDXrHkMvsSniFnzo+aLLh1AaDhpYpiDw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-25T15:48:01.399026Z"},"content_sha256":"c80322a24c24037dfa7b7fd446d7cc4265860d46362014485fb43569abf55b79","schema_version":"1.0","event_id":"sha256:c80322a24c24037dfa7b7fd446d7cc4265860d46362014485fb43569abf55b79"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/CGSPAQRXI2BG33TBVDZHFSZQOG/bundle.json","state_url":"https://pith.science/pith/CGSPAQRXI2BG33TBVDZHFSZQOG/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/CGSPAQRXI2BG33TBVDZHFSZQOG/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":"2026-05-25T15:48:01Z","links":{"resolver":"https://pith.science/pith/CGSPAQRXI2BG33TBVDZHFSZQOG","bundle":"https://pith.science/pith/CGSPAQRXI2BG33TBVDZHFSZQOG/bundle.json","state":"https://pith.science/pith/CGSPAQRXI2BG33TBVDZHFSZQOG/state.json","well_known_bundle":"https://pith.science/.well-known/pith/CGSPAQRXI2BG33TBVDZHFSZQOG/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2008:CGSPAQRXI2BG33TBVDZHFSZQOG","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":"d3013aa8851c3e39b945b21f6ac6bb993c0f24824613f96cbee8fb1a5350b61c","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph","submitted_at":"2008-12-03T21:01:16Z","title_canon_sha256":"9cc5fb227b498da4df595330ba14c98ced5fa210d10cbcaf2f408c513f404c9c"},"schema_version":"1.0","source":{"id":"0812.0810","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0812.0810","created_at":"2026-05-18T04:30:35Z"},{"alias_kind":"arxiv_version","alias_value":"0812.0810v1","created_at":"2026-05-18T04:30:35Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0812.0810","created_at":"2026-05-18T04:30:35Z"},{"alias_kind":"pith_short_12","alias_value":"CGSPAQRXI2BG","created_at":"2026-05-18T12:25:57Z"},{"alias_kind":"pith_short_16","alias_value":"CGSPAQRXI2BG33TB","created_at":"2026-05-18T12:25:57Z"},{"alias_kind":"pith_short_8","alias_value":"CGSPAQRX","created_at":"2026-05-18T12:25:57Z"}],"graph_snapshots":[{"event_id":"sha256:c80322a24c24037dfa7b7fd446d7cc4265860d46362014485fb43569abf55b79","target":"graph","created_at":"2026-05-18T04:30:35Z","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"},"paper":{"abstract_excerpt":"We present the results of concurrent X-ray and optical monitoring of the Seyfert 1 galaxy Mrk 79 over a period of more than five years. We find that on short to medium time-scales (days to a few tens of days) the 2-10 keV X-ray and optical u and V band fluxes are significantly correlated, with a delay between the bands consistent with zero days. We show that most of these variations may be well reproduced by a model where the short-term optical variations originate from reprocessing of X-rays by an optically thick accretion disc. The optical light curves, however, also display long time-scale ","authors_text":"(1) P. Uttley (1), (2) CrAO, 3), (3) Isaac Newton Institute of Chile, (4) Tokyo, (6) Michigan, (7) St. Andrews, C. M. Gaskell (5), E. Breedt (1), E. M. Cackett (6), I. M. McHardy, Japan (5) Texas, K. Horne (7), P. Ar\\'evalo (1), S. G. Sergeev (2, S. Koshida (4) ((1) Southampton, T. Minezaki (4), UK, UK), Ukraine, USA, Y. Yoshii (4)","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph","submitted_at":"2008-12-03T21:01:16Z","title":"Long term optical and X-ray variability of the Seyfert galaxy Markarian 79"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0812.0810","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":"sha256:33add3c258d223046b140b224878cdc6930f9532d4586750402720445b515a64","target":"record","created_at":"2026-05-18T04:30:35Z","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":"d3013aa8851c3e39b945b21f6ac6bb993c0f24824613f96cbee8fb1a5350b61c","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph","submitted_at":"2008-12-03T21:01:16Z","title_canon_sha256":"9cc5fb227b498da4df595330ba14c98ced5fa210d10cbcaf2f408c513f404c9c"},"schema_version":"1.0","source":{"id":"0812.0810","kind":"arxiv","version":1}},"canonical_sha256":"11a4f0423746826dee61a8f272cb30719130b21653c10493859d21bfb1009d16","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"11a4f0423746826dee61a8f272cb30719130b21653c10493859d21bfb1009d16","first_computed_at":"2026-05-18T04:30:35.357478Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T04:30:35.357478Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"B7rd3QB+wEXc3eZDP+1kUETYtqG/ikPNq5PJdu+OIAjXi58sNj62eLD0orSI+dMPjo3T+g+u91e5fmg0s3NZBw==","signature_status":"signed_v1","signed_at":"2026-05-18T04:30:35.358089Z","signed_message":"canonical_sha256_bytes"},"source_id":"0812.0810","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:33add3c258d223046b140b224878cdc6930f9532d4586750402720445b515a64","sha256:c80322a24c24037dfa7b7fd446d7cc4265860d46362014485fb43569abf55b79"],"state_sha256":"a9ced4029a428ea1c42d0aafd0535438ab5604165a99fd6996e722e79419e548"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Xh2oJ0NAK0SGtaNxq7XzOoMgFQaSDIKuB/hcsNZv/7VZGQ9oxHbLqN9P70oZiAyBo52AE4KvYWYbWYiJvGQ0DQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-25T15:48:01.401789Z","bundle_sha256":"57c8292e20fad5fb5fe8afca91ec984ccc855675e4209c1f504ceca09459c3ff"}}