{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2017:MLSR56FKPMN7AVX4F2VMNDMX5P","short_pith_number":"pith:MLSR56FK","canonical_record":{"source":{"id":"1705.08556","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2017-05-23T23:11:07Z","cross_cats_sorted":[],"title_canon_sha256":"401fd678330882ddbf9c2d695f815bfe06fe1554871232de02aa03f8811e6f6b","abstract_canon_sha256":"7ecb408f1f9411d1b53fb14d43556187c94cb448a9d84eb4b8bf6964b364a654"},"schema_version":"1.0"},"canonical_sha256":"62e51ef8aa7b1bf056fc2eaac68d97ebe6e6751b838e72ef0fdf3dae50afb2d3","source":{"kind":"arxiv","id":"1705.08556","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1705.08556","created_at":"2026-05-18T00:40:57Z"},{"alias_kind":"arxiv_version","alias_value":"1705.08556v1","created_at":"2026-05-18T00:40:57Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1705.08556","created_at":"2026-05-18T00:40:57Z"},{"alias_kind":"pith_short_12","alias_value":"MLSR56FKPMN7","created_at":"2026-05-18T12:31:31Z"},{"alias_kind":"pith_short_16","alias_value":"MLSR56FKPMN7AVX4","created_at":"2026-05-18T12:31:31Z"},{"alias_kind":"pith_short_8","alias_value":"MLSR56FK","created_at":"2026-05-18T12:31:31Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2017:MLSR56FKPMN7AVX4F2VMNDMX5P","target":"record","payload":{"canonical_record":{"source":{"id":"1705.08556","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2017-05-23T23:11:07Z","cross_cats_sorted":[],"title_canon_sha256":"401fd678330882ddbf9c2d695f815bfe06fe1554871232de02aa03f8811e6f6b","abstract_canon_sha256":"7ecb408f1f9411d1b53fb14d43556187c94cb448a9d84eb4b8bf6964b364a654"},"schema_version":"1.0"},"canonical_sha256":"62e51ef8aa7b1bf056fc2eaac68d97ebe6e6751b838e72ef0fdf3dae50afb2d3","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:40:57.558512Z","signature_b64":"W4eC1Ys7wpJuB6f9G0kQ3i7TDECwI43IEwYGiWtG+iCjngue0kL+e41P7KABnbyJqLoyHr86qc8yno1GVkXXDA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"62e51ef8aa7b1bf056fc2eaac68d97ebe6e6751b838e72ef0fdf3dae50afb2d3","last_reissued_at":"2026-05-18T00:40:57.558086Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:40:57.558086Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1705.08556","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":"2026-05-18T00:40:57Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"UpWIerugBZwOLmd6o3sEcrYtVhCSA+ZkkpopFvtUhKP0+MalEErM/zhy19Dy4fsXM+F/dgUyZCYV0ltHEcLUDQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-01T17:37:57.546693Z"},"content_sha256":"d5d4ac2efbc8e5280be8e25a00a31340c322759fae99bc1d5d6d591bd527bbe5","schema_version":"1.0","event_id":"sha256:d5d4ac2efbc8e5280be8e25a00a31340c322759fae99bc1d5d6d591bd527bbe5"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2017:MLSR56FKPMN7AVX4F2VMNDMX5P","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Constraining the Orbit of Supermassive Black Hole Binary 0402+379","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.GA","authors_text":"Alison. B. Peck, Greg B. Taylor, Karishma Bansal, Robert T. Zavala, Roger W. Romani","submitted_at":"2017-05-23T23:11:07Z","abstract_excerpt":"The radio galaxy 0402+379 is believed to host a supermassive black hole binary (SMBHB). The two compact core sources are separated by a projected distance of 7.3 pc, making it the most (spatially) compact resolved SMBHB known. We present new multi-frequency VLBI observations of 0402+379 at 5, 8, 15 and 22 GHz, and combine with previous observations spanning 12 years. A strong frequency dependent core shift is evident, which we use to infer magnetic fields near the jet base. After correcting for these shifts we detect significant relative motion of the two cores at $\\beta=v/c=0.0054 \\pm 0.0003$"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1705.08556","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":"2026-05-18T00:40:57Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"gVTTW5TMSVfp5whOdIrPcO+d6rreT1Z7dBkh3MaNXAjXIR2NFKHuRz6rjkKYpAOl2YgcHWT0NGrpLfnUNPZMDw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-01T17:37:57.547184Z"},"content_sha256":"87b766344dfb515e58f0798c4a0d15bdc75d2f8a188940e5128748b849097f49","schema_version":"1.0","event_id":"sha256:87b766344dfb515e58f0798c4a0d15bdc75d2f8a188940e5128748b849097f49"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/MLSR56FKPMN7AVX4F2VMNDMX5P/bundle.json","state_url":"https://pith.science/pith/MLSR56FKPMN7AVX4F2VMNDMX5P/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/MLSR56FKPMN7AVX4F2VMNDMX5P/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":"2026-08-01T17:37:57Z","links":{"resolver":"https://pith.science/pith/MLSR56FKPMN7AVX4F2VMNDMX5P","bundle":"https://pith.science/pith/MLSR56FKPMN7AVX4F2VMNDMX5P/bundle.json","state":"https://pith.science/pith/MLSR56FKPMN7AVX4F2VMNDMX5P/state.json","well_known_bundle":"https://pith.science/.well-known/pith/MLSR56FKPMN7AVX4F2VMNDMX5P/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2017:MLSR56FKPMN7AVX4F2VMNDMX5P","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":"7ecb408f1f9411d1b53fb14d43556187c94cb448a9d84eb4b8bf6964b364a654","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2017-05-23T23:11:07Z","title_canon_sha256":"401fd678330882ddbf9c2d695f815bfe06fe1554871232de02aa03f8811e6f6b"},"schema_version":"1.0","source":{"id":"1705.08556","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1705.08556","created_at":"2026-05-18T00:40:57Z"},{"alias_kind":"arxiv_version","alias_value":"1705.08556v1","created_at":"2026-05-18T00:40:57Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1705.08556","created_at":"2026-05-18T00:40:57Z"},{"alias_kind":"pith_short_12","alias_value":"MLSR56FKPMN7","created_at":"2026-05-18T12:31:31Z"},{"alias_kind":"pith_short_16","alias_value":"MLSR56FKPMN7AVX4","created_at":"2026-05-18T12:31:31Z"},{"alias_kind":"pith_short_8","alias_value":"MLSR56FK","created_at":"2026-05-18T12:31:31Z"}],"graph_snapshots":[{"event_id":"sha256:87b766344dfb515e58f0798c4a0d15bdc75d2f8a188940e5128748b849097f49","target":"graph","created_at":"2026-05-18T00:40:57Z","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":"The radio galaxy 0402+379 is believed to host a supermassive black hole binary (SMBHB). The two compact core sources are separated by a projected distance of 7.3 pc, making it the most (spatially) compact resolved SMBHB known. We present new multi-frequency VLBI observations of 0402+379 at 5, 8, 15 and 22 GHz, and combine with previous observations spanning 12 years. A strong frequency dependent core shift is evident, which we use to infer magnetic fields near the jet base. After correcting for these shifts we detect significant relative motion of the two cores at $\\beta=v/c=0.0054 \\pm 0.0003$","authors_text":"Alison. B. Peck, Greg B. Taylor, Karishma Bansal, Robert T. Zavala, Roger W. Romani","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2017-05-23T23:11:07Z","title":"Constraining the Orbit of Supermassive Black Hole Binary 0402+379"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1705.08556","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:d5d4ac2efbc8e5280be8e25a00a31340c322759fae99bc1d5d6d591bd527bbe5","target":"record","created_at":"2026-05-18T00:40:57Z","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":"7ecb408f1f9411d1b53fb14d43556187c94cb448a9d84eb4b8bf6964b364a654","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2017-05-23T23:11:07Z","title_canon_sha256":"401fd678330882ddbf9c2d695f815bfe06fe1554871232de02aa03f8811e6f6b"},"schema_version":"1.0","source":{"id":"1705.08556","kind":"arxiv","version":1}},"canonical_sha256":"62e51ef8aa7b1bf056fc2eaac68d97ebe6e6751b838e72ef0fdf3dae50afb2d3","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"62e51ef8aa7b1bf056fc2eaac68d97ebe6e6751b838e72ef0fdf3dae50afb2d3","first_computed_at":"2026-05-18T00:40:57.558086Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:40:57.558086Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"W4eC1Ys7wpJuB6f9G0kQ3i7TDECwI43IEwYGiWtG+iCjngue0kL+e41P7KABnbyJqLoyHr86qc8yno1GVkXXDA==","signature_status":"signed_v1","signed_at":"2026-05-18T00:40:57.558512Z","signed_message":"canonical_sha256_bytes"},"source_id":"1705.08556","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:d5d4ac2efbc8e5280be8e25a00a31340c322759fae99bc1d5d6d591bd527bbe5","sha256:87b766344dfb515e58f0798c4a0d15bdc75d2f8a188940e5128748b849097f49"],"state_sha256":"e422fdd2156a48fb7eea13bf97e99dd470f5d952365f881faec8e02b5a9d03f5"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"t5KukIC2TYKHETfX0cmgyeXKr2L9LlI8Yk2HcS5j+DC4lIkHLcdvNkZ3v3nSxSbF1//25gZ2UO4LD9SwXTmoCQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-01T17:37:57.550771Z","bundle_sha256":"216ee8b282a2c9fa78abe627e8a1e5cd34d31c1f05f821969adf372c6635804e"}}