{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2000:CA7FV5GZUDA4V6IPICHUMG27FK","short_pith_number":"pith:CA7FV5GZ","canonical_record":{"source":{"id":"astro-ph/0008173","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"astro-ph","submitted_at":"2000-08-11T02:30:09Z","cross_cats_sorted":[],"title_canon_sha256":"56703b1710789f030ae20c0e19583bbc142cd1b17c5272f07d56b48bcb5d747b","abstract_canon_sha256":"88e55d9a15a18dd99c35c58202d85192d8556fa890f995a54aa013076c08898f"},"schema_version":"1.0"},"canonical_sha256":"103e5af4d9a0c1caf90f408f461b5f2a8b03e8aa4f65317fc5db22ca79e14294","source":{"kind":"arxiv","id":"astro-ph/0008173","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"astro-ph/0008173","created_at":"2026-05-18T01:40:47Z"},{"alias_kind":"arxiv_version","alias_value":"astro-ph/0008173v1","created_at":"2026-05-18T01:40:47Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.astro-ph/0008173","created_at":"2026-05-18T01:40:47Z"},{"alias_kind":"pith_short_12","alias_value":"CA7FV5GZUDA4","created_at":"2026-05-18T12:25:49Z"},{"alias_kind":"pith_short_16","alias_value":"CA7FV5GZUDA4V6IP","created_at":"2026-05-18T12:25:49Z"},{"alias_kind":"pith_short_8","alias_value":"CA7FV5GZ","created_at":"2026-05-18T12:25:49Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2000:CA7FV5GZUDA4V6IPICHUMG27FK","target":"record","payload":{"canonical_record":{"source":{"id":"astro-ph/0008173","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"astro-ph","submitted_at":"2000-08-11T02:30:09Z","cross_cats_sorted":[],"title_canon_sha256":"56703b1710789f030ae20c0e19583bbc142cd1b17c5272f07d56b48bcb5d747b","abstract_canon_sha256":"88e55d9a15a18dd99c35c58202d85192d8556fa890f995a54aa013076c08898f"},"schema_version":"1.0"},"canonical_sha256":"103e5af4d9a0c1caf90f408f461b5f2a8b03e8aa4f65317fc5db22ca79e14294","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:40:47.400402Z","signature_b64":"7G25R0LSxVYabaG9sqqxsanp7FMhvaKYpcrU7y3/dctaiX5HSQVmvvocsyBqgv3iJtkoE546viGzTdWS37IwAQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"103e5af4d9a0c1caf90f408f461b5f2a8b03e8aa4f65317fc5db22ca79e14294","last_reissued_at":"2026-05-18T01:40:47.399684Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:40:47.399684Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"astro-ph/0008173","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":"2026-05-18T01:40:47Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"2pNiBkX7a8avdQ/wjjZ1h1DLJF3N7ZOYkp6uftV1hkPyT+MKFYFJo44+ra7y6Z842taeA5b1MUwJGug1OIcGBg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-21T15:51:11.813186Z"},"content_sha256":"d4d8ef051f4ca0027e0677e14c97f7999c475290d5ab269395c79626f8f9719b","schema_version":"1.0","event_id":"sha256:d4d8ef051f4ca0027e0677e14c97f7999c475290d5ab269395c79626f8f9719b"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2000:CA7FV5GZUDA4V6IPICHUMG27FK","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Sub-parsec-scale Accleration of the Radio Jet in the Powerful Radio Galaxy NGC 6251","license":"","headline":"","cross_cats":[],"primary_cat":"astro-ph","authors_text":"(2)National Astronomical Observatory of Japan), H. Sudou (1), M. Inoue(2), O. Kaburaki(1), S. Kameno (2), S. Sawada-Satoh(2), T. Sasao(2) ((1)Tohoku University, Y. Ohyama (2), Y. Taniguchi (1)","submitted_at":"2000-08-11T02:30:09Z","abstract_excerpt":"In order to investigate the genesis of powerful radio jet, we have mapped the central 10 pc region of the nearby radio galaxy NGC 6251 with a 0.2 pc resolution using Very Long Baseline Interferometer (VLBI) at two radio frequencies, 5 GHz and 15 GHz, we have found the sub-parsec-scale counterjet for the first time in this radio galaxy. This discovery allows us to investigate the jet acceleration based on the relativistic beaming model."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/0008173","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":"2026-05-18T01:40:47Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"s03Gck7K4m3ZM3HfqutysnMfO0LY+/9oly7Rs0STVZan54RRMTjXa8t3ojawg4U1HvLknqS8MW705YZy59b4Aw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-21T15:51:11.813550Z"},"content_sha256":"2ac1f51744b27d67b25e26fa71a377e3cbacaf6da0c2de9920f73d81582d056a","schema_version":"1.0","event_id":"sha256:2ac1f51744b27d67b25e26fa71a377e3cbacaf6da0c2de9920f73d81582d056a"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/CA7FV5GZUDA4V6IPICHUMG27FK/bundle.json","state_url":"https://pith.science/pith/CA7FV5GZUDA4V6IPICHUMG27FK/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/CA7FV5GZUDA4V6IPICHUMG27FK/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":"2026-06-21T15:51:11Z","links":{"resolver":"https://pith.science/pith/CA7FV5GZUDA4V6IPICHUMG27FK","bundle":"https://pith.science/pith/CA7FV5GZUDA4V6IPICHUMG27FK/bundle.json","state":"https://pith.science/pith/CA7FV5GZUDA4V6IPICHUMG27FK/state.json","well_known_bundle":"https://pith.science/.well-known/pith/CA7FV5GZUDA4V6IPICHUMG27FK/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2000:CA7FV5GZUDA4V6IPICHUMG27FK","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":"88e55d9a15a18dd99c35c58202d85192d8556fa890f995a54aa013076c08898f","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"2000-08-11T02:30:09Z","title_canon_sha256":"56703b1710789f030ae20c0e19583bbc142cd1b17c5272f07d56b48bcb5d747b"},"schema_version":"1.0","source":{"id":"astro-ph/0008173","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"astro-ph/0008173","created_at":"2026-05-18T01:40:47Z"},{"alias_kind":"arxiv_version","alias_value":"astro-ph/0008173v1","created_at":"2026-05-18T01:40:47Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.astro-ph/0008173","created_at":"2026-05-18T01:40:47Z"},{"alias_kind":"pith_short_12","alias_value":"CA7FV5GZUDA4","created_at":"2026-05-18T12:25:49Z"},{"alias_kind":"pith_short_16","alias_value":"CA7FV5GZUDA4V6IP","created_at":"2026-05-18T12:25:49Z"},{"alias_kind":"pith_short_8","alias_value":"CA7FV5GZ","created_at":"2026-05-18T12:25:49Z"}],"graph_snapshots":[{"event_id":"sha256:2ac1f51744b27d67b25e26fa71a377e3cbacaf6da0c2de9920f73d81582d056a","target":"graph","created_at":"2026-05-18T01:40:47Z","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 order to investigate the genesis of powerful radio jet, we have mapped the central 10 pc region of the nearby radio galaxy NGC 6251 with a 0.2 pc resolution using Very Long Baseline Interferometer (VLBI) at two radio frequencies, 5 GHz and 15 GHz, we have found the sub-parsec-scale counterjet for the first time in this radio galaxy. This discovery allows us to investigate the jet acceleration based on the relativistic beaming model.","authors_text":"(2)National Astronomical Observatory of Japan), H. Sudou (1), M. Inoue(2), O. Kaburaki(1), S. Kameno (2), S. Sawada-Satoh(2), T. Sasao(2) ((1)Tohoku University, Y. Ohyama (2), Y. Taniguchi (1)","cross_cats":[],"headline":"","license":"","primary_cat":"astro-ph","submitted_at":"2000-08-11T02:30:09Z","title":"Sub-parsec-scale Accleration of the Radio Jet in the Powerful Radio Galaxy NGC 6251"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/0008173","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:d4d8ef051f4ca0027e0677e14c97f7999c475290d5ab269395c79626f8f9719b","target":"record","created_at":"2026-05-18T01:40:47Z","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":"88e55d9a15a18dd99c35c58202d85192d8556fa890f995a54aa013076c08898f","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"2000-08-11T02:30:09Z","title_canon_sha256":"56703b1710789f030ae20c0e19583bbc142cd1b17c5272f07d56b48bcb5d747b"},"schema_version":"1.0","source":{"id":"astro-ph/0008173","kind":"arxiv","version":1}},"canonical_sha256":"103e5af4d9a0c1caf90f408f461b5f2a8b03e8aa4f65317fc5db22ca79e14294","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"103e5af4d9a0c1caf90f408f461b5f2a8b03e8aa4f65317fc5db22ca79e14294","first_computed_at":"2026-05-18T01:40:47.399684Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:40:47.399684Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"7G25R0LSxVYabaG9sqqxsanp7FMhvaKYpcrU7y3/dctaiX5HSQVmvvocsyBqgv3iJtkoE546viGzTdWS37IwAQ==","signature_status":"signed_v1","signed_at":"2026-05-18T01:40:47.400402Z","signed_message":"canonical_sha256_bytes"},"source_id":"astro-ph/0008173","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:d4d8ef051f4ca0027e0677e14c97f7999c475290d5ab269395c79626f8f9719b","sha256:2ac1f51744b27d67b25e26fa71a377e3cbacaf6da0c2de9920f73d81582d056a"],"state_sha256":"2528ae2127caaf6aa3dcb9d35dae5af74c71fddc08938135980b0b57da4cf9fd"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"e5Vdsgw4Bh5FTZxS8mIRfCpFHqj0rVW1zX7qTGdm+YGXhgTuh5O/15F4pGsWzN3Y4rMW1Szh/p9I0DZeexZgCg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-21T15:51:11.815521Z","bundle_sha256":"406642d3e1ed37d630f04ffbcff56ffbdc9fee5bca5591c2a5213a8f67406a9c"}}