{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2010:YHQ3I3J77V4Y7C4E6AE5OM7BXI","short_pith_number":"pith:YHQ3I3J7","canonical_record":{"source":{"id":"1008.2706","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2010-08-16T16:29:55Z","cross_cats_sorted":["astro-ph.CO"],"title_canon_sha256":"ac32cfc4e888b403a70bb0fd15a3af603f8e64ef5a8940eb58a16c3abfdd4725","abstract_canon_sha256":"1f81ab5a87dd89040eae96120af6df0ef4aea81e1bd5f4ede72c41b0bff3e620"},"schema_version":"1.0"},"canonical_sha256":"c1e1b46d3ffd798f8b84f009d733e1ba33a21c54c1a5f416268e90f4864c5aa0","source":{"kind":"arxiv","id":"1008.2706","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1008.2706","created_at":"2026-05-18T02:05:47Z"},{"alias_kind":"arxiv_version","alias_value":"1008.2706v1","created_at":"2026-05-18T02:05:47Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1008.2706","created_at":"2026-05-18T02:05:47Z"},{"alias_kind":"pith_short_12","alias_value":"YHQ3I3J77V4Y","created_at":"2026-05-18T12:26:17Z"},{"alias_kind":"pith_short_16","alias_value":"YHQ3I3J77V4Y7C4E","created_at":"2026-05-18T12:26:17Z"},{"alias_kind":"pith_short_8","alias_value":"YHQ3I3J7","created_at":"2026-05-18T12:26:17Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2010:YHQ3I3J77V4Y7C4E6AE5OM7BXI","target":"record","payload":{"canonical_record":{"source":{"id":"1008.2706","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2010-08-16T16:29:55Z","cross_cats_sorted":["astro-ph.CO"],"title_canon_sha256":"ac32cfc4e888b403a70bb0fd15a3af603f8e64ef5a8940eb58a16c3abfdd4725","abstract_canon_sha256":"1f81ab5a87dd89040eae96120af6df0ef4aea81e1bd5f4ede72c41b0bff3e620"},"schema_version":"1.0"},"canonical_sha256":"c1e1b46d3ffd798f8b84f009d733e1ba33a21c54c1a5f416268e90f4864c5aa0","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:05:47.929402Z","signature_b64":"BVZucwicCeL2wj7iP+H8+ENk8cZ0beF8TW53TFbf6C7HOQjw+cdqbiNagwKuowJ2J/Dxxs9HQJNdJuo7T+IKCg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"c1e1b46d3ffd798f8b84f009d733e1ba33a21c54c1a5f416268e90f4864c5aa0","last_reissued_at":"2026-05-18T02:05:47.928658Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:05:47.928658Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1008.2706","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":"2026-05-18T02:05:47Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"/MJX9k9S22spTHAETEgUPSM/NrovPoMDbDuQO9FpbjmP4B7w+pnWRJKJ0f+sslZ0Ic3CkH3RfyHJwhjy+QTSAg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-20T09:11:28.078109Z"},"content_sha256":"0f462474fabbc6f91ecca2dfc35a754e379d5e44bfb435249f8b3957736bebb8","schema_version":"1.0","event_id":"sha256:0f462474fabbc6f91ecca2dfc35a754e379d5e44bfb435249f8b3957736bebb8"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2010:YHQ3I3J77V4Y7C4E6AE5OM7BXI","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Double-double radio galaxies: further insights into the formation of the radio structures","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.CO"],"primary_cat":"astro-ph.HE","authors_text":"Arno Schoenmakers, Catherine Brocksopp (MSSL), Christian Kaiser, Ger de Bruyn","submitted_at":"2010-08-16T16:29:55Z","abstract_excerpt":"Double-double radio galaxies (DDRGs) offer a unique opportunity for us to study multiple episodes of jet activity in large-scale radio sources. We use radio data from the Very Large Array and the literature to model two DDRGs, B1450+333 and B1834+620, in terms of their dynamical evolution. We find that the standard Fanaroff-Riley II model is able to explain the properties of the two outer lobes of each source, whereby the lobes are formed by ram-pressure balance of a shock at the end of the jet with the surrounding medium. The inner pairs of lobes, however, are not well-described by the standa"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1008.2706","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":"2026-05-18T02:05:47Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"QPeVy6k/wLfyTfb0zCyhAP60zCADx61QVjLOJTH3dhN5W1bYcogZwvrcVbH/tr+m9j8dnF+iLx6OCXiEBdLKBg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-20T09:11:28.078470Z"},"content_sha256":"cd4d46f28a1ae5bbf64ab35cfd6b3ca9ecf95a6c17e1fd9b3c7e964645fb1782","schema_version":"1.0","event_id":"sha256:cd4d46f28a1ae5bbf64ab35cfd6b3ca9ecf95a6c17e1fd9b3c7e964645fb1782"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/YHQ3I3J77V4Y7C4E6AE5OM7BXI/bundle.json","state_url":"https://pith.science/pith/YHQ3I3J77V4Y7C4E6AE5OM7BXI/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/YHQ3I3J77V4Y7C4E6AE5OM7BXI/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":"2026-06-20T09:11:28Z","links":{"resolver":"https://pith.science/pith/YHQ3I3J77V4Y7C4E6AE5OM7BXI","bundle":"https://pith.science/pith/YHQ3I3J77V4Y7C4E6AE5OM7BXI/bundle.json","state":"https://pith.science/pith/YHQ3I3J77V4Y7C4E6AE5OM7BXI/state.json","well_known_bundle":"https://pith.science/.well-known/pith/YHQ3I3J77V4Y7C4E6AE5OM7BXI/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2010:YHQ3I3J77V4Y7C4E6AE5OM7BXI","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":"1f81ab5a87dd89040eae96120af6df0ef4aea81e1bd5f4ede72c41b0bff3e620","cross_cats_sorted":["astro-ph.CO"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2010-08-16T16:29:55Z","title_canon_sha256":"ac32cfc4e888b403a70bb0fd15a3af603f8e64ef5a8940eb58a16c3abfdd4725"},"schema_version":"1.0","source":{"id":"1008.2706","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1008.2706","created_at":"2026-05-18T02:05:47Z"},{"alias_kind":"arxiv_version","alias_value":"1008.2706v1","created_at":"2026-05-18T02:05:47Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1008.2706","created_at":"2026-05-18T02:05:47Z"},{"alias_kind":"pith_short_12","alias_value":"YHQ3I3J77V4Y","created_at":"2026-05-18T12:26:17Z"},{"alias_kind":"pith_short_16","alias_value":"YHQ3I3J77V4Y7C4E","created_at":"2026-05-18T12:26:17Z"},{"alias_kind":"pith_short_8","alias_value":"YHQ3I3J7","created_at":"2026-05-18T12:26:17Z"}],"graph_snapshots":[{"event_id":"sha256:cd4d46f28a1ae5bbf64ab35cfd6b3ca9ecf95a6c17e1fd9b3c7e964645fb1782","target":"graph","created_at":"2026-05-18T02:05:47Z","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":"Double-double radio galaxies (DDRGs) offer a unique opportunity for us to study multiple episodes of jet activity in large-scale radio sources. We use radio data from the Very Large Array and the literature to model two DDRGs, B1450+333 and B1834+620, in terms of their dynamical evolution. We find that the standard Fanaroff-Riley II model is able to explain the properties of the two outer lobes of each source, whereby the lobes are formed by ram-pressure balance of a shock at the end of the jet with the surrounding medium. The inner pairs of lobes, however, are not well-described by the standa","authors_text":"Arno Schoenmakers, Catherine Brocksopp (MSSL), Christian Kaiser, Ger de Bruyn","cross_cats":["astro-ph.CO"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2010-08-16T16:29:55Z","title":"Double-double radio galaxies: further insights into the formation of the radio structures"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1008.2706","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":"sha256:0f462474fabbc6f91ecca2dfc35a754e379d5e44bfb435249f8b3957736bebb8","target":"record","created_at":"2026-05-18T02:05:47Z","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":"1f81ab5a87dd89040eae96120af6df0ef4aea81e1bd5f4ede72c41b0bff3e620","cross_cats_sorted":["astro-ph.CO"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2010-08-16T16:29:55Z","title_canon_sha256":"ac32cfc4e888b403a70bb0fd15a3af603f8e64ef5a8940eb58a16c3abfdd4725"},"schema_version":"1.0","source":{"id":"1008.2706","kind":"arxiv","version":1}},"canonical_sha256":"c1e1b46d3ffd798f8b84f009d733e1ba33a21c54c1a5f416268e90f4864c5aa0","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"c1e1b46d3ffd798f8b84f009d733e1ba33a21c54c1a5f416268e90f4864c5aa0","first_computed_at":"2026-05-18T02:05:47.928658Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:05:47.928658Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"BVZucwicCeL2wj7iP+H8+ENk8cZ0beF8TW53TFbf6C7HOQjw+cdqbiNagwKuowJ2J/Dxxs9HQJNdJuo7T+IKCg==","signature_status":"signed_v1","signed_at":"2026-05-18T02:05:47.929402Z","signed_message":"canonical_sha256_bytes"},"source_id":"1008.2706","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:0f462474fabbc6f91ecca2dfc35a754e379d5e44bfb435249f8b3957736bebb8","sha256:cd4d46f28a1ae5bbf64ab35cfd6b3ca9ecf95a6c17e1fd9b3c7e964645fb1782"],"state_sha256":"6ea5a5b267bd76a367101958e6803763ff67e29f1b5d44950c58f319e60e5e3f"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"eYTmRwrCDaPP4kkdUsuqxQDHO5RrFFXOfiyJMhmEYa2OyW51THyLl0xz4EYumYqQwQ7ckuZpwK26wQAtTqeYBA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-20T09:11:28.080417Z","bundle_sha256":"1a31db9b2c18be2f707142ebd8f01e047943528c9e952d522d854f6717ba5af8"}}