{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2011:2EZJS4TA2SMSGBAW4Y7A2UJGZU","short_pith_number":"pith:2EZJS4TA","canonical_record":{"source":{"id":"1112.5221","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2011-12-22T02:26:16Z","cross_cats_sorted":[],"title_canon_sha256":"142abb5eb1a2c4beab8965c75b8f852a6a092fe26f67a9cd93a5c92b3f3e0ae1","abstract_canon_sha256":"5d561e66f54873ede2a5e9867614739151e94f68a4b697bb386f62a0ae3a10b8"},"schema_version":"1.0"},"canonical_sha256":"d132997260d499230416e63e0d5126cd10fc44fc4d06ccc08a578f6142163d0e","source":{"kind":"arxiv","id":"1112.5221","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1112.5221","created_at":"2026-05-18T01:59:03Z"},{"alias_kind":"arxiv_version","alias_value":"1112.5221v1","created_at":"2026-05-18T01:59:03Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1112.5221","created_at":"2026-05-18T01:59:03Z"},{"alias_kind":"pith_short_12","alias_value":"2EZJS4TA2SMS","created_at":"2026-05-18T12:26:18Z"},{"alias_kind":"pith_short_16","alias_value":"2EZJS4TA2SMSGBAW","created_at":"2026-05-18T12:26:18Z"},{"alias_kind":"pith_short_8","alias_value":"2EZJS4TA","created_at":"2026-05-18T12:26:18Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2011:2EZJS4TA2SMSGBAW4Y7A2UJGZU","target":"record","payload":{"canonical_record":{"source":{"id":"1112.5221","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2011-12-22T02:26:16Z","cross_cats_sorted":[],"title_canon_sha256":"142abb5eb1a2c4beab8965c75b8f852a6a092fe26f67a9cd93a5c92b3f3e0ae1","abstract_canon_sha256":"5d561e66f54873ede2a5e9867614739151e94f68a4b697bb386f62a0ae3a10b8"},"schema_version":"1.0"},"canonical_sha256":"d132997260d499230416e63e0d5126cd10fc44fc4d06ccc08a578f6142163d0e","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:59:03.452647Z","signature_b64":"IPazZYiKGJmXp2/GXrWSGEYurotsgwhCk1PckGxpVBZayXaeRoe+owiMh3mVGJ6X4U6My3Ch+W8rzzKbpgpNAg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"d132997260d499230416e63e0d5126cd10fc44fc4d06ccc08a578f6142163d0e","last_reissued_at":"2026-05-18T01:59:03.452136Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:59:03.452136Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1112.5221","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":"2026-05-18T01:59:03Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ZOjLOzPG5UhZ07ay9P0TCC8iI80qT9yyxGw/9ZtB2tei38gakXLosilbjcQc1KmFg7Ktr6vhKqIoJezuY4FkCw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-25T17:38:33.752355Z"},"content_sha256":"2603290010051bca21d864ec5983299213c6c773394a2f575f411e614039db95","schema_version":"1.0","event_id":"sha256:2603290010051bca21d864ec5983299213c6c773394a2f575f411e614039db95"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2011:2EZJS4TA2SMSGBAW4Y7A2UJGZU","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Classical radio source propagating into outer HI disc in NGC 3801","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.CO","authors_text":"(2) Univ. Melbourne, (3) Astron, 4), 4) ((1) CSIRO Astronomy, (4) Kapteyn Inst, Bjorn Emonts (1), Christian Struve (3, Criag Burnett (2), Raffaella Morganti (3, Space Science/ATNF, Univ. Groningen.)","submitted_at":"2011-12-22T02:26:16Z","abstract_excerpt":"We present observations of a large-scale disc of neutral hydrogen (HI) in the nearby Fanaroff & Riley type-I radio galaxy NGC 3801 with the Westerbork Synthesis Radio Telescope. The HI disc (34 kpc in diameter and with M_HI = 1.3 x 10^9 M_sun) is aligned with the radio jet axis. This makes NGC 3801 an ideal system for investigating the evolution of a small radio source through its host galaxy's cold ISM. The large-scale HI disc is perpendicular to a known inner CO disc and dust-lane. We argue that the formation history of the large-scale HI disc is in agreement with earlier speculation that NG"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1112.5221","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":"2026-05-18T01:59:03Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"WCcfwFry1xIbOqDWixwvg3dEyoAVaQOUq5AMquoS6MEaSgDlQJ4A64OJMG//oTW2bImGfKb2LtmozRbWq/OqCQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-25T17:38:33.753060Z"},"content_sha256":"7b8d45d404831008eb8f5db02775fbcf56c22e17da2234c75b317220dc41c548","schema_version":"1.0","event_id":"sha256:7b8d45d404831008eb8f5db02775fbcf56c22e17da2234c75b317220dc41c548"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/2EZJS4TA2SMSGBAW4Y7A2UJGZU/bundle.json","state_url":"https://pith.science/pith/2EZJS4TA2SMSGBAW4Y7A2UJGZU/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/2EZJS4TA2SMSGBAW4Y7A2UJGZU/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":"2026-05-25T17:38:33Z","links":{"resolver":"https://pith.science/pith/2EZJS4TA2SMSGBAW4Y7A2UJGZU","bundle":"https://pith.science/pith/2EZJS4TA2SMSGBAW4Y7A2UJGZU/bundle.json","state":"https://pith.science/pith/2EZJS4TA2SMSGBAW4Y7A2UJGZU/state.json","well_known_bundle":"https://pith.science/.well-known/pith/2EZJS4TA2SMSGBAW4Y7A2UJGZU/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2011:2EZJS4TA2SMSGBAW4Y7A2UJGZU","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":"5d561e66f54873ede2a5e9867614739151e94f68a4b697bb386f62a0ae3a10b8","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2011-12-22T02:26:16Z","title_canon_sha256":"142abb5eb1a2c4beab8965c75b8f852a6a092fe26f67a9cd93a5c92b3f3e0ae1"},"schema_version":"1.0","source":{"id":"1112.5221","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1112.5221","created_at":"2026-05-18T01:59:03Z"},{"alias_kind":"arxiv_version","alias_value":"1112.5221v1","created_at":"2026-05-18T01:59:03Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1112.5221","created_at":"2026-05-18T01:59:03Z"},{"alias_kind":"pith_short_12","alias_value":"2EZJS4TA2SMS","created_at":"2026-05-18T12:26:18Z"},{"alias_kind":"pith_short_16","alias_value":"2EZJS4TA2SMSGBAW","created_at":"2026-05-18T12:26:18Z"},{"alias_kind":"pith_short_8","alias_value":"2EZJS4TA","created_at":"2026-05-18T12:26:18Z"}],"graph_snapshots":[{"event_id":"sha256:7b8d45d404831008eb8f5db02775fbcf56c22e17da2234c75b317220dc41c548","target":"graph","created_at":"2026-05-18T01:59:03Z","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":"We present observations of a large-scale disc of neutral hydrogen (HI) in the nearby Fanaroff & Riley type-I radio galaxy NGC 3801 with the Westerbork Synthesis Radio Telescope. The HI disc (34 kpc in diameter and with M_HI = 1.3 x 10^9 M_sun) is aligned with the radio jet axis. This makes NGC 3801 an ideal system for investigating the evolution of a small radio source through its host galaxy's cold ISM. The large-scale HI disc is perpendicular to a known inner CO disc and dust-lane. We argue that the formation history of the large-scale HI disc is in agreement with earlier speculation that NG","authors_text":"(2) Univ. Melbourne, (3) Astron, 4), 4) ((1) CSIRO Astronomy, (4) Kapteyn Inst, Bjorn Emonts (1), Christian Struve (3, Criag Burnett (2), Raffaella Morganti (3, Space Science/ATNF, Univ. Groningen.)","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2011-12-22T02:26:16Z","title":"Classical radio source propagating into outer HI disc in NGC 3801"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1112.5221","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":"sha256:2603290010051bca21d864ec5983299213c6c773394a2f575f411e614039db95","target":"record","created_at":"2026-05-18T01:59:03Z","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":"5d561e66f54873ede2a5e9867614739151e94f68a4b697bb386f62a0ae3a10b8","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2011-12-22T02:26:16Z","title_canon_sha256":"142abb5eb1a2c4beab8965c75b8f852a6a092fe26f67a9cd93a5c92b3f3e0ae1"},"schema_version":"1.0","source":{"id":"1112.5221","kind":"arxiv","version":1}},"canonical_sha256":"d132997260d499230416e63e0d5126cd10fc44fc4d06ccc08a578f6142163d0e","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"d132997260d499230416e63e0d5126cd10fc44fc4d06ccc08a578f6142163d0e","first_computed_at":"2026-05-18T01:59:03.452136Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:59:03.452136Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"IPazZYiKGJmXp2/GXrWSGEYurotsgwhCk1PckGxpVBZayXaeRoe+owiMh3mVGJ6X4U6My3Ch+W8rzzKbpgpNAg==","signature_status":"signed_v1","signed_at":"2026-05-18T01:59:03.452647Z","signed_message":"canonical_sha256_bytes"},"source_id":"1112.5221","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:2603290010051bca21d864ec5983299213c6c773394a2f575f411e614039db95","sha256:7b8d45d404831008eb8f5db02775fbcf56c22e17da2234c75b317220dc41c548"],"state_sha256":"93d0aa148721e53fdf0b388a7f7a019c69794716383515a088cc442c144550d5"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"jyqRI4kydnam2QsxrLpPIUCIDNpB4Tj5n8Ne34pMxlVE/k4KbwxX33b3m1mYZ5gFkxCJy/+AytOJJQNLdwT1Bg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-25T17:38:33.756411Z","bundle_sha256":"9a169b0ce20113162c590e3fe483d13c7b21d31a8b7a6a0ac3df436bfd5b9584"}}