{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2011:HWBFTPUNZFLJKN5JLQADZ4BDWZ","short_pith_number":"pith:HWBFTPUN","canonical_record":{"source":{"id":"1103.5806","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2011-03-30T01:38:20Z","cross_cats_sorted":[],"title_canon_sha256":"066cf1bc154e78791f59c1cbd24e7f5cf13181035e2a1dfe52880b7a63ca10cf","abstract_canon_sha256":"e505f80c4356d833d161bcda7a2bad8b9365ec97237ef6061a7885374865b03d"},"schema_version":"1.0"},"canonical_sha256":"3d8259be8dc9569537a95c003cf023b65d4085556a996ea1528d62beaee4c4ce","source":{"kind":"arxiv","id":"1103.5806","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1103.5806","created_at":"2026-05-18T02:02:43Z"},{"alias_kind":"arxiv_version","alias_value":"1103.5806v1","created_at":"2026-05-18T02:02:43Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1103.5806","created_at":"2026-05-18T02:02:43Z"},{"alias_kind":"pith_short_12","alias_value":"HWBFTPUNZFLJ","created_at":"2026-05-18T12:26:30Z"},{"alias_kind":"pith_short_16","alias_value":"HWBFTPUNZFLJKN5J","created_at":"2026-05-18T12:26:30Z"},{"alias_kind":"pith_short_8","alias_value":"HWBFTPUN","created_at":"2026-05-18T12:26:30Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2011:HWBFTPUNZFLJKN5JLQADZ4BDWZ","target":"record","payload":{"canonical_record":{"source":{"id":"1103.5806","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2011-03-30T01:38:20Z","cross_cats_sorted":[],"title_canon_sha256":"066cf1bc154e78791f59c1cbd24e7f5cf13181035e2a1dfe52880b7a63ca10cf","abstract_canon_sha256":"e505f80c4356d833d161bcda7a2bad8b9365ec97237ef6061a7885374865b03d"},"schema_version":"1.0"},"canonical_sha256":"3d8259be8dc9569537a95c003cf023b65d4085556a996ea1528d62beaee4c4ce","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:02:43.019699Z","signature_b64":"qlLFzCeUCVlIXeEPS/LavRT0F/qlPMl7d1zIvkrG+N45PGHqpdWjW4HZEAooqZZtBh6PLnmLeorEkga8dN9aCg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"3d8259be8dc9569537a95c003cf023b65d4085556a996ea1528d62beaee4c4ce","last_reissued_at":"2026-05-18T02:02:43.018767Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:02:43.018767Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1103.5806","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":"2026-05-18T02:02:43Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"wIx1yaFFkzI2Yz2auneO9mU+oj+K+SVaPg4rKd0mXKffQGClRmnos4lOl/k7aP+u9IqUzTs7SDmQQ7A75NlHAg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-28T14:56:39.434060Z"},"content_sha256":"54614681d47804569733ff6205469ce11a0445d9fb5d5bd02839bcebf5b0b8b0","schema_version":"1.0","event_id":"sha256:54614681d47804569733ff6205469ce11a0445d9fb5d5bd02839bcebf5b0b8b0"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2011:HWBFTPUNZFLJKN5JLQADZ4BDWZ","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"CO observations of high-z radio galaxies MRC 2104-242 and MRC 0943-242: spectral-line performance of the Compact Array Broadband Backend","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.CO","authors_text":"1), (10) Univ. of Sheffield), (2) Leiden Observatory, (3) Univ. of Sydney, (4) IAA/CSIC Granada, (5) Univ. of Tasmania, 6, (6) AAO Sydney, (7) ASTRON Dwingeloo, 8), (8) Kapteyn Astron. Inst. Groningen, (9) ICC Durham, B. H. C. Emonts (1), C. N. Tadhunter (10) ((1) CSIRO Astronomy & Space Science/ATNF, E. M. Sadler (3), G. Miley (2), I. Feain (1), J. B. Stevens (1), K. E. K. Coppin (9), M. H. Wieringa (1), M. Villar-Martin (4), M. Y. Mao (5, R. D. Ekers (1), R. P. Norris (1), T. A. Oosterloo (7","submitted_at":"2011-03-30T01:38:20Z","abstract_excerpt":"We present the first 7-millimetre observations of two high-redshift, Lya-bright radio galaxies (MRC 2104-242 and MRC 0943-242) performed with the 2 x 2 GHz instantaneous bandwidth of the Compact Array Broadband Backend (CABB) at the Australia Telescope Compact Array (ATCA). The aim was to search for 12CO(1-0) emission in these systems and test the millimetre capabilities of CABB for performing spectral line observations at high redshifts. We show that the stable band and enhanced velocity coverage of CABB, combined with hybrid array configurations, provide the ATCA with excellent 7-mm capabili"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1103.5806","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":"2026-05-18T02:02:43Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"0Rn4NhsxUVkGbCobrw3gsFO/4C4tDCx2IfpHzdgp2X7hWl33GRrM8JjaSKYWNkLO3uc0Otl+WMdjP9WdqyPxDA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-28T14:56:39.434433Z"},"content_sha256":"657b85f686149f68b534cf72c8772467b5493d2ac37f632975476d1fdc38e7f0","schema_version":"1.0","event_id":"sha256:657b85f686149f68b534cf72c8772467b5493d2ac37f632975476d1fdc38e7f0"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/HWBFTPUNZFLJKN5JLQADZ4BDWZ/bundle.json","state_url":"https://pith.science/pith/HWBFTPUNZFLJKN5JLQADZ4BDWZ/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/HWBFTPUNZFLJKN5JLQADZ4BDWZ/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":"2026-05-28T14:56:39Z","links":{"resolver":"https://pith.science/pith/HWBFTPUNZFLJKN5JLQADZ4BDWZ","bundle":"https://pith.science/pith/HWBFTPUNZFLJKN5JLQADZ4BDWZ/bundle.json","state":"https://pith.science/pith/HWBFTPUNZFLJKN5JLQADZ4BDWZ/state.json","well_known_bundle":"https://pith.science/.well-known/pith/HWBFTPUNZFLJKN5JLQADZ4BDWZ/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2011:HWBFTPUNZFLJKN5JLQADZ4BDWZ","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":"e505f80c4356d833d161bcda7a2bad8b9365ec97237ef6061a7885374865b03d","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2011-03-30T01:38:20Z","title_canon_sha256":"066cf1bc154e78791f59c1cbd24e7f5cf13181035e2a1dfe52880b7a63ca10cf"},"schema_version":"1.0","source":{"id":"1103.5806","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1103.5806","created_at":"2026-05-18T02:02:43Z"},{"alias_kind":"arxiv_version","alias_value":"1103.5806v1","created_at":"2026-05-18T02:02:43Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1103.5806","created_at":"2026-05-18T02:02:43Z"},{"alias_kind":"pith_short_12","alias_value":"HWBFTPUNZFLJ","created_at":"2026-05-18T12:26:30Z"},{"alias_kind":"pith_short_16","alias_value":"HWBFTPUNZFLJKN5J","created_at":"2026-05-18T12:26:30Z"},{"alias_kind":"pith_short_8","alias_value":"HWBFTPUN","created_at":"2026-05-18T12:26:30Z"}],"graph_snapshots":[{"event_id":"sha256:657b85f686149f68b534cf72c8772467b5493d2ac37f632975476d1fdc38e7f0","target":"graph","created_at":"2026-05-18T02:02:43Z","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 the first 7-millimetre observations of two high-redshift, Lya-bright radio galaxies (MRC 2104-242 and MRC 0943-242) performed with the 2 x 2 GHz instantaneous bandwidth of the Compact Array Broadband Backend (CABB) at the Australia Telescope Compact Array (ATCA). The aim was to search for 12CO(1-0) emission in these systems and test the millimetre capabilities of CABB for performing spectral line observations at high redshifts. We show that the stable band and enhanced velocity coverage of CABB, combined with hybrid array configurations, provide the ATCA with excellent 7-mm capabili","authors_text":"1), (10) Univ. of Sheffield), (2) Leiden Observatory, (3) Univ. of Sydney, (4) IAA/CSIC Granada, (5) Univ. of Tasmania, 6, (6) AAO Sydney, (7) ASTRON Dwingeloo, 8), (8) Kapteyn Astron. Inst. Groningen, (9) ICC Durham, B. H. C. Emonts (1), C. N. Tadhunter (10) ((1) CSIRO Astronomy & Space Science/ATNF, E. M. Sadler (3), G. Miley (2), I. Feain (1), J. B. Stevens (1), K. E. K. Coppin (9), M. H. Wieringa (1), M. Villar-Martin (4), M. Y. Mao (5, R. D. Ekers (1), R. P. Norris (1), T. A. Oosterloo (7","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2011-03-30T01:38:20Z","title":"CO observations of high-z radio galaxies MRC 2104-242 and MRC 0943-242: spectral-line performance of the Compact Array Broadband Backend"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1103.5806","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":"sha256:54614681d47804569733ff6205469ce11a0445d9fb5d5bd02839bcebf5b0b8b0","target":"record","created_at":"2026-05-18T02:02:43Z","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":"e505f80c4356d833d161bcda7a2bad8b9365ec97237ef6061a7885374865b03d","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2011-03-30T01:38:20Z","title_canon_sha256":"066cf1bc154e78791f59c1cbd24e7f5cf13181035e2a1dfe52880b7a63ca10cf"},"schema_version":"1.0","source":{"id":"1103.5806","kind":"arxiv","version":1}},"canonical_sha256":"3d8259be8dc9569537a95c003cf023b65d4085556a996ea1528d62beaee4c4ce","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"3d8259be8dc9569537a95c003cf023b65d4085556a996ea1528d62beaee4c4ce","first_computed_at":"2026-05-18T02:02:43.018767Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:02:43.018767Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"qlLFzCeUCVlIXeEPS/LavRT0F/qlPMl7d1zIvkrG+N45PGHqpdWjW4HZEAooqZZtBh6PLnmLeorEkga8dN9aCg==","signature_status":"signed_v1","signed_at":"2026-05-18T02:02:43.019699Z","signed_message":"canonical_sha256_bytes"},"source_id":"1103.5806","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:54614681d47804569733ff6205469ce11a0445d9fb5d5bd02839bcebf5b0b8b0","sha256:657b85f686149f68b534cf72c8772467b5493d2ac37f632975476d1fdc38e7f0"],"state_sha256":"90313dbd08654ab85df3faa094a953c89483ee02120e42f769990bb003857065"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"kgjUMI/5wSpAFl9slZkdm5o2itoFdwREqO9a8Z/DKrdjF6Tsz7jETuz8laC2N6FGZMJ9jENtqAeSSuPw4g8/AQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-28T14:56:39.436409Z","bundle_sha256":"a2c11dc64fadd4b291e118bf008c6ad6d6bf9033e99f02a3a7fd7de9ca64a342"}}