{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2006:4RBGZNPN6VUPMY37HENTILZRHT","short_pith_number":"pith:4RBGZNPN","canonical_record":{"source":{"id":"astro-ph/0602511","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"astro-ph","submitted_at":"2006-02-23T13:35:32Z","cross_cats_sorted":[],"title_canon_sha256":"d0f86907918bb4c7d44d777635ec5cf602b587ed6e11cb1838b30833a9671216","abstract_canon_sha256":"830e56475111475a06a9b4c643f0ca736622e110f5d98f36c78148f39fda3e9b"},"schema_version":"1.0"},"canonical_sha256":"e4426cb5edf568f6637f391b342f313cdeab444018768d3bb026e55753c5397c","source":{"kind":"arxiv","id":"astro-ph/0602511","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"astro-ph/0602511","created_at":"2026-05-18T01:07:25Z"},{"alias_kind":"arxiv_version","alias_value":"astro-ph/0602511v1","created_at":"2026-05-18T01:07:25Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.astro-ph/0602511","created_at":"2026-05-18T01:07:25Z"},{"alias_kind":"pith_short_12","alias_value":"4RBGZNPN6VUP","created_at":"2026-05-18T12:25:53Z"},{"alias_kind":"pith_short_16","alias_value":"4RBGZNPN6VUPMY37","created_at":"2026-05-18T12:25:53Z"},{"alias_kind":"pith_short_8","alias_value":"4RBGZNPN","created_at":"2026-05-18T12:25:53Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2006:4RBGZNPN6VUPMY37HENTILZRHT","target":"record","payload":{"canonical_record":{"source":{"id":"astro-ph/0602511","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"astro-ph","submitted_at":"2006-02-23T13:35:32Z","cross_cats_sorted":[],"title_canon_sha256":"d0f86907918bb4c7d44d777635ec5cf602b587ed6e11cb1838b30833a9671216","abstract_canon_sha256":"830e56475111475a06a9b4c643f0ca736622e110f5d98f36c78148f39fda3e9b"},"schema_version":"1.0"},"canonical_sha256":"e4426cb5edf568f6637f391b342f313cdeab444018768d3bb026e55753c5397c","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:07:25.554796Z","signature_b64":"qsDLCSXQR6M3O6M23tbY3G26ta2qowVzXUnP8IQN4BBZ/kiuEPJft0r3d19ELK6vvJlBUyCo7AzbNqTmh80iBQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"e4426cb5edf568f6637f391b342f313cdeab444018768d3bb026e55753c5397c","last_reissued_at":"2026-05-18T01:07:25.554342Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:07:25.554342Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"astro-ph/0602511","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":"2026-05-18T01:07:25Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"B74kcy4g66lWAcaXczpBiqceRQj+rlcdXiafu036PY3T/PdaVanNvx0NB0YINK/HI5eKHpvn4TGLRIcGEyb3Bw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-01T03:39:15.910682Z"},"content_sha256":"9f37aa571544de1332a8500851b8a6ea6d732e3508b20269092c5b3909598485","schema_version":"1.0","event_id":"sha256:9f37aa571544de1332a8500851b8a6ea6d732e3508b20269092c5b3909598485"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2006:4RBGZNPN6VUPMY37HENTILZRHT","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Flat-spectrum symmetric objects with ~1 kpc sizes I. The candidates","license":"","headline":"","cross_cats":[],"primary_cat":"astro-ph","authors_text":"Ismael Perez-Fournon, J. Ignacio Gonzalez-Serrano, Pedro Augusto, Peter N. Wilkinson","submitted_at":"2006-02-23T13:35:32Z","abstract_excerpt":"In order to understand the origin and evolution of radio galaxies, searches for the youngest such sources have been conducted. Compact-medium symmetric objects (CSO-MSOs) are thought to be the earliest stages of radio sources, with possible ages of <10^3 yrs for CSOs (<1 kpc in size) and 10^4-10^5 yrs for MSOs (1-15 kpc). From a literature selection in heterogeneous surveys, we have established a sample of 37 confirmed CSOs. In addition, we only found three confirmed flat-spectrum MSOs in the literature.\n The typical CSO resides on a z<0.5 galaxy, has a flat radio spectrum (a_thin<0.5; S_v pro"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/0602511","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":"2026-05-18T01:07:25Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"yr1sJlJqUnHIoUAzfrMAW6AcR28ySfkcbVVhm2zcwkv2Boxpn6cCXneHDdJ9ppLOX9e8GOE9o6qoS5M3cMD3Aw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-01T03:39:15.911043Z"},"content_sha256":"194abfc21cde0febc4aac2c5624a2fef402076c8e1add95f2c6dd020594a4c28","schema_version":"1.0","event_id":"sha256:194abfc21cde0febc4aac2c5624a2fef402076c8e1add95f2c6dd020594a4c28"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/4RBGZNPN6VUPMY37HENTILZRHT/bundle.json","state_url":"https://pith.science/pith/4RBGZNPN6VUPMY37HENTILZRHT/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/4RBGZNPN6VUPMY37HENTILZRHT/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":"2026-06-01T03:39:15Z","links":{"resolver":"https://pith.science/pith/4RBGZNPN6VUPMY37HENTILZRHT","bundle":"https://pith.science/pith/4RBGZNPN6VUPMY37HENTILZRHT/bundle.json","state":"https://pith.science/pith/4RBGZNPN6VUPMY37HENTILZRHT/state.json","well_known_bundle":"https://pith.science/.well-known/pith/4RBGZNPN6VUPMY37HENTILZRHT/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2006:4RBGZNPN6VUPMY37HENTILZRHT","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":"830e56475111475a06a9b4c643f0ca736622e110f5d98f36c78148f39fda3e9b","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"2006-02-23T13:35:32Z","title_canon_sha256":"d0f86907918bb4c7d44d777635ec5cf602b587ed6e11cb1838b30833a9671216"},"schema_version":"1.0","source":{"id":"astro-ph/0602511","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"astro-ph/0602511","created_at":"2026-05-18T01:07:25Z"},{"alias_kind":"arxiv_version","alias_value":"astro-ph/0602511v1","created_at":"2026-05-18T01:07:25Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.astro-ph/0602511","created_at":"2026-05-18T01:07:25Z"},{"alias_kind":"pith_short_12","alias_value":"4RBGZNPN6VUP","created_at":"2026-05-18T12:25:53Z"},{"alias_kind":"pith_short_16","alias_value":"4RBGZNPN6VUPMY37","created_at":"2026-05-18T12:25:53Z"},{"alias_kind":"pith_short_8","alias_value":"4RBGZNPN","created_at":"2026-05-18T12:25:53Z"}],"graph_snapshots":[{"event_id":"sha256:194abfc21cde0febc4aac2c5624a2fef402076c8e1add95f2c6dd020594a4c28","target":"graph","created_at":"2026-05-18T01:07:25Z","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 understand the origin and evolution of radio galaxies, searches for the youngest such sources have been conducted. Compact-medium symmetric objects (CSO-MSOs) are thought to be the earliest stages of radio sources, with possible ages of <10^3 yrs for CSOs (<1 kpc in size) and 10^4-10^5 yrs for MSOs (1-15 kpc). From a literature selection in heterogeneous surveys, we have established a sample of 37 confirmed CSOs. In addition, we only found three confirmed flat-spectrum MSOs in the literature.\n The typical CSO resides on a z<0.5 galaxy, has a flat radio spectrum (a_thin<0.5; S_v pro","authors_text":"Ismael Perez-Fournon, J. Ignacio Gonzalez-Serrano, Pedro Augusto, Peter N. Wilkinson","cross_cats":[],"headline":"","license":"","primary_cat":"astro-ph","submitted_at":"2006-02-23T13:35:32Z","title":"Flat-spectrum symmetric objects with ~1 kpc sizes I. The candidates"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/0602511","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":"sha256:9f37aa571544de1332a8500851b8a6ea6d732e3508b20269092c5b3909598485","target":"record","created_at":"2026-05-18T01:07:25Z","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":"830e56475111475a06a9b4c643f0ca736622e110f5d98f36c78148f39fda3e9b","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"2006-02-23T13:35:32Z","title_canon_sha256":"d0f86907918bb4c7d44d777635ec5cf602b587ed6e11cb1838b30833a9671216"},"schema_version":"1.0","source":{"id":"astro-ph/0602511","kind":"arxiv","version":1}},"canonical_sha256":"e4426cb5edf568f6637f391b342f313cdeab444018768d3bb026e55753c5397c","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"e4426cb5edf568f6637f391b342f313cdeab444018768d3bb026e55753c5397c","first_computed_at":"2026-05-18T01:07:25.554342Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:07:25.554342Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"qsDLCSXQR6M3O6M23tbY3G26ta2qowVzXUnP8IQN4BBZ/kiuEPJft0r3d19ELK6vvJlBUyCo7AzbNqTmh80iBQ==","signature_status":"signed_v1","signed_at":"2026-05-18T01:07:25.554796Z","signed_message":"canonical_sha256_bytes"},"source_id":"astro-ph/0602511","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:9f37aa571544de1332a8500851b8a6ea6d732e3508b20269092c5b3909598485","sha256:194abfc21cde0febc4aac2c5624a2fef402076c8e1add95f2c6dd020594a4c28"],"state_sha256":"858c88de5a0d913dfdbdea76e56ed22789b4129c3a8420eab69b21ae7b8ab00e"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"4eWaX+vW1vCL+ryo7uND9RlVLMhKHqAIYZhu3EWKyCS9Wca2gj7PZp8CTVukWMHPMz8puwtxiFbVH0zwyntlCA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-01T03:39:15.913161Z","bundle_sha256":"b169939677594f0ddf56c0ade2e4d2a20084e092ea19fdb3f518f0fab4298293"}}