{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2012:DZDWSQ6DMIFEXWY2P6MJVGIPEL","short_pith_number":"pith:DZDWSQ6D","canonical_record":{"source":{"id":"1202.3873","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2012-02-17T10:49:26Z","cross_cats_sorted":["astro-ph.CO"],"title_canon_sha256":"0c06de44cfea9329a26dc924a3fbbdf4a740cc0870682f8667428a5d26846fa7","abstract_canon_sha256":"8da7c2efe85c3c4648f822f5ec2a1fdde638db11a735fbfe678a72c6c905b7dc"},"schema_version":"1.0"},"canonical_sha256":"1e476943c3620a4bdb1a7f989a990f22e147f8b6126de9a29ea314d1d034c797","source":{"kind":"arxiv","id":"1202.3873","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1202.3873","created_at":"2026-05-18T01:58:24Z"},{"alias_kind":"arxiv_version","alias_value":"1202.3873v1","created_at":"2026-05-18T01:58:24Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1202.3873","created_at":"2026-05-18T01:58:24Z"},{"alias_kind":"pith_short_12","alias_value":"DZDWSQ6DMIFE","created_at":"2026-05-18T12:27:04Z"},{"alias_kind":"pith_short_16","alias_value":"DZDWSQ6DMIFEXWY2","created_at":"2026-05-18T12:27:04Z"},{"alias_kind":"pith_short_8","alias_value":"DZDWSQ6D","created_at":"2026-05-18T12:27:04Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2012:DZDWSQ6DMIFEXWY2P6MJVGIPEL","target":"record","payload":{"canonical_record":{"source":{"id":"1202.3873","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2012-02-17T10:49:26Z","cross_cats_sorted":["astro-ph.CO"],"title_canon_sha256":"0c06de44cfea9329a26dc924a3fbbdf4a740cc0870682f8667428a5d26846fa7","abstract_canon_sha256":"8da7c2efe85c3c4648f822f5ec2a1fdde638db11a735fbfe678a72c6c905b7dc"},"schema_version":"1.0"},"canonical_sha256":"1e476943c3620a4bdb1a7f989a990f22e147f8b6126de9a29ea314d1d034c797","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:58:24.144224Z","signature_b64":"uOjN4mbEQE5/M7s5OHHVGr3xJ5XdqHAZFP969RJCGYaudCk3zlQi1iEPSao4bfJY2qKWXp7d9Ju5uFJzigQHBQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"1e476943c3620a4bdb1a7f989a990f22e147f8b6126de9a29ea314d1d034c797","last_reissued_at":"2026-05-18T01:58:24.143768Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:58:24.143768Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1202.3873","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":"2026-05-18T01:58:24Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"awvE5A9BrzgtLKoIC37MSxPkqR/J8dGgCRXLlyo3zGpICJzNauj64oNqfSF8wOHco1tM4xp/pjl1dMvMOjZoAA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-06T08:06:46.254725Z"},"content_sha256":"c9dfe736089d04b0172b6e610200a0b5f6c867422664ffe2ee1e5ef2705192b9","schema_version":"1.0","event_id":"sha256:c9dfe736089d04b0172b6e610200a0b5f6c867422664ffe2ee1e5ef2705192b9"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2012:DZDWSQ6DMIFEXWY2P6MJVGIPEL","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Periodic Radio Variability in NRAO 530: Phase Dispersion Minimization Analysis","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.CO"],"primary_cat":"astro-ph.HE","authors_text":"Hong-Bing Qiu, Ji-Ming Lin, Jun-Chao Lu, Jun-yi Wang, Tao An","submitted_at":"2012-02-17T10:49:26Z","abstract_excerpt":"In this paper, a periodicity analysis of the radio light curves of the blazar NRAO 530 at 14.5, 8.0, and 4.8 GHz is presented employing an improved Phase Dispersion Minimization (PDM) technique. The result, which shows two persistent periodic components of $ \\sim 6$ and $ \\sim 10$ years at all three frequencies, is consistent with the results obtained with the Lomb-Scargle periodogram and weighted wavelet Z-transform algorithms. The reliability of the derived periodicities is confirmed by the Monte Carlo numerical simulations which show a high statistical confidence. (Quasi-)Periodic fluctuati"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1202.3873","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":"2026-05-18T01:58:24Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"YmzIukmDYJD494bIgSA7uLtboMwijOaaab2zt2Fx4pN68sBOnemXssAMupT63jeGbLjkWstRo6iAcMltZK8aBQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-06T08:06:46.255419Z"},"content_sha256":"6eae0497c7297e54f8436bb1f69884439d5a8288607f8779ec7e191ece8d8602","schema_version":"1.0","event_id":"sha256:6eae0497c7297e54f8436bb1f69884439d5a8288607f8779ec7e191ece8d8602"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/DZDWSQ6DMIFEXWY2P6MJVGIPEL/bundle.json","state_url":"https://pith.science/pith/DZDWSQ6DMIFEXWY2P6MJVGIPEL/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/DZDWSQ6DMIFEXWY2P6MJVGIPEL/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":"2026-06-06T08:06:46Z","links":{"resolver":"https://pith.science/pith/DZDWSQ6DMIFEXWY2P6MJVGIPEL","bundle":"https://pith.science/pith/DZDWSQ6DMIFEXWY2P6MJVGIPEL/bundle.json","state":"https://pith.science/pith/DZDWSQ6DMIFEXWY2P6MJVGIPEL/state.json","well_known_bundle":"https://pith.science/.well-known/pith/DZDWSQ6DMIFEXWY2P6MJVGIPEL/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2012:DZDWSQ6DMIFEXWY2P6MJVGIPEL","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":"8da7c2efe85c3c4648f822f5ec2a1fdde638db11a735fbfe678a72c6c905b7dc","cross_cats_sorted":["astro-ph.CO"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2012-02-17T10:49:26Z","title_canon_sha256":"0c06de44cfea9329a26dc924a3fbbdf4a740cc0870682f8667428a5d26846fa7"},"schema_version":"1.0","source":{"id":"1202.3873","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1202.3873","created_at":"2026-05-18T01:58:24Z"},{"alias_kind":"arxiv_version","alias_value":"1202.3873v1","created_at":"2026-05-18T01:58:24Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1202.3873","created_at":"2026-05-18T01:58:24Z"},{"alias_kind":"pith_short_12","alias_value":"DZDWSQ6DMIFE","created_at":"2026-05-18T12:27:04Z"},{"alias_kind":"pith_short_16","alias_value":"DZDWSQ6DMIFEXWY2","created_at":"2026-05-18T12:27:04Z"},{"alias_kind":"pith_short_8","alias_value":"DZDWSQ6D","created_at":"2026-05-18T12:27:04Z"}],"graph_snapshots":[{"event_id":"sha256:6eae0497c7297e54f8436bb1f69884439d5a8288607f8779ec7e191ece8d8602","target":"graph","created_at":"2026-05-18T01:58:24Z","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":"In this paper, a periodicity analysis of the radio light curves of the blazar NRAO 530 at 14.5, 8.0, and 4.8 GHz is presented employing an improved Phase Dispersion Minimization (PDM) technique. The result, which shows two persistent periodic components of $ \\sim 6$ and $ \\sim 10$ years at all three frequencies, is consistent with the results obtained with the Lomb-Scargle periodogram and weighted wavelet Z-transform algorithms. The reliability of the derived periodicities is confirmed by the Monte Carlo numerical simulations which show a high statistical confidence. (Quasi-)Periodic fluctuati","authors_text":"Hong-Bing Qiu, Ji-Ming Lin, Jun-Chao Lu, Jun-yi Wang, Tao An","cross_cats":["astro-ph.CO"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2012-02-17T10:49:26Z","title":"Periodic Radio Variability in NRAO 530: Phase Dispersion Minimization Analysis"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1202.3873","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:c9dfe736089d04b0172b6e610200a0b5f6c867422664ffe2ee1e5ef2705192b9","target":"record","created_at":"2026-05-18T01:58:24Z","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":"8da7c2efe85c3c4648f822f5ec2a1fdde638db11a735fbfe678a72c6c905b7dc","cross_cats_sorted":["astro-ph.CO"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2012-02-17T10:49:26Z","title_canon_sha256":"0c06de44cfea9329a26dc924a3fbbdf4a740cc0870682f8667428a5d26846fa7"},"schema_version":"1.0","source":{"id":"1202.3873","kind":"arxiv","version":1}},"canonical_sha256":"1e476943c3620a4bdb1a7f989a990f22e147f8b6126de9a29ea314d1d034c797","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"1e476943c3620a4bdb1a7f989a990f22e147f8b6126de9a29ea314d1d034c797","first_computed_at":"2026-05-18T01:58:24.143768Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:58:24.143768Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"uOjN4mbEQE5/M7s5OHHVGr3xJ5XdqHAZFP969RJCGYaudCk3zlQi1iEPSao4bfJY2qKWXp7d9Ju5uFJzigQHBQ==","signature_status":"signed_v1","signed_at":"2026-05-18T01:58:24.144224Z","signed_message":"canonical_sha256_bytes"},"source_id":"1202.3873","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:c9dfe736089d04b0172b6e610200a0b5f6c867422664ffe2ee1e5ef2705192b9","sha256:6eae0497c7297e54f8436bb1f69884439d5a8288607f8779ec7e191ece8d8602"],"state_sha256":"9abb4c7937f142cb93a85299dc9747182140bd776283ed9590dd123fc8c1125a"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"zBvTBQZGWvJCmJtpZvcFDcPkyN7s2QNPoIq3ZCmv+5sXVdCvSUog7tiNDO+BsEARVvmsXmBUaOHLmmY3OY+3Ag==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-06T08:06:46.260380Z","bundle_sha256":"f7fce57079bac7d74b8d46938db0d957f026ca86179bbfc931aed8df4602b294"}}