{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2024:7KO3KRFG3QPN6ZWUGIUUZQXIMZ","short_pith_number":"pith:7KO3KRFG","canonical_record":{"source":{"id":"2412.03644","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.GA","submitted_at":"2024-12-04T19:00:00Z","cross_cats_sorted":[],"title_canon_sha256":"488fd11d02c89bef714e09a5acd30082ae78ecb0dea45e9d03756435dfdd1cf3","abstract_canon_sha256":"1010f29a3cae72fd90d89183e6de90262448aca2bfa1201999ff6d5b09246578"},"schema_version":"1.0"},"canonical_sha256":"fa9db544a6dc1edf66d432294cc2e86652ba4e05b40b90fdea5ff36bc79257ec","source":{"kind":"arxiv","id":"2412.03644","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2412.03644","created_at":"2026-07-05T10:06:31Z"},{"alias_kind":"arxiv_version","alias_value":"2412.03644v1","created_at":"2026-07-05T10:06:31Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2412.03644","created_at":"2026-07-05T10:06:31Z"},{"alias_kind":"pith_short_12","alias_value":"7KO3KRFG3QPN","created_at":"2026-07-05T10:06:31Z"},{"alias_kind":"pith_short_16","alias_value":"7KO3KRFG3QPN6ZWU","created_at":"2026-07-05T10:06:31Z"},{"alias_kind":"pith_short_8","alias_value":"7KO3KRFG","created_at":"2026-07-05T10:06:31Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2024:7KO3KRFG3QPN6ZWUGIUUZQXIMZ","target":"record","payload":{"canonical_record":{"source":{"id":"2412.03644","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.GA","submitted_at":"2024-12-04T19:00:00Z","cross_cats_sorted":[],"title_canon_sha256":"488fd11d02c89bef714e09a5acd30082ae78ecb0dea45e9d03756435dfdd1cf3","abstract_canon_sha256":"1010f29a3cae72fd90d89183e6de90262448aca2bfa1201999ff6d5b09246578"},"schema_version":"1.0"},"canonical_sha256":"fa9db544a6dc1edf66d432294cc2e86652ba4e05b40b90fdea5ff36bc79257ec","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T10:06:31.720550Z","signature_b64":"6S7jgjlYy4pZci/AdRvgF+uGe16EoJXhRE4dGm8P9pOSc0+tn0GZtTg45NSRCqxJj9BANcGM0WOmmsACyL6hBw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"fa9db544a6dc1edf66d432294cc2e86652ba4e05b40b90fdea5ff36bc79257ec","last_reissued_at":"2026-07-05T10:06:31.720075Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T10:06:31.720075Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2412.03644","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":"2026-07-05T10:06:31Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"7nNje+RQ0rCFNeahlbSBDE5wo4OfGE58Tb/uV/RP4Z1r1CRWrtTGVFz3+zyIJF7VqzTUZwPKy+jPGo55Gg2WBw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-12T18:03:02.586610Z"},"content_sha256":"dba806f1c50f10fd193937fd8f606d89fe427850208fee1612950ca05fd32fff","schema_version":"1.0","event_id":"sha256:dba806f1c50f10fd193937fd8f606d89fe427850208fee1612950ca05fd32fff"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2024:7KO3KRFG3QPN6ZWUGIUUZQXIMZ","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"A nuclear spiral in a dusty star-forming galaxy at $z=2.78$","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.GA","authors_text":"C. M. O'Riordan, D. M. Powell, F. Rizzo, H. R. Stacey, J. P. McKean, M. Kaasinen","submitted_at":"2024-12-04T19:00:00Z","abstract_excerpt":"The nuclear structure of dusty star-forming galaxies is largely unexplored but harbours critical information about their structural evolution. Here, we present long-baseline Atacama Large (sub-)Millimetre Array (ALMA) continuum observations of a gravitationally lensed dusty star-forming galaxy at $z=2.78$. We use a pixellated lens modelling analysis to reconstruct the rest-frame 230 $\\rm\\mu$m dust emission with a mean resolution of $\\approx55$ pc and demonstrate that the inferred source properties are robust to changes in lens modelling methodology. The central 1 kpc is characterised by an exp"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2412.03644","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2412.03644/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"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":"2026-07-05T10:06:31Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"YsV+ItG1NUUu3MDVNln/6wIAOU4+v84+io0IB8HClWSFDHCQyNk6hOKGQsdlMlHGYk3cScdL+LLmGJeyBsAtDw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-12T18:03:02.587232Z"},"content_sha256":"149a06cefd0f496f82802a5c59f3fe8f8278e4ad9e7e0c92dc4420a98a3377d1","schema_version":"1.0","event_id":"sha256:149a06cefd0f496f82802a5c59f3fe8f8278e4ad9e7e0c92dc4420a98a3377d1"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/7KO3KRFG3QPN6ZWUGIUUZQXIMZ/bundle.json","state_url":"https://pith.science/pith/7KO3KRFG3QPN6ZWUGIUUZQXIMZ/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/7KO3KRFG3QPN6ZWUGIUUZQXIMZ/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":"2026-08-12T18:03:02Z","links":{"resolver":"https://pith.science/pith/7KO3KRFG3QPN6ZWUGIUUZQXIMZ","bundle":"https://pith.science/pith/7KO3KRFG3QPN6ZWUGIUUZQXIMZ/bundle.json","state":"https://pith.science/pith/7KO3KRFG3QPN6ZWUGIUUZQXIMZ/state.json","well_known_bundle":"https://pith.science/.well-known/pith/7KO3KRFG3QPN6ZWUGIUUZQXIMZ/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2024:7KO3KRFG3QPN6ZWUGIUUZQXIMZ","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":"1010f29a3cae72fd90d89183e6de90262448aca2bfa1201999ff6d5b09246578","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.GA","submitted_at":"2024-12-04T19:00:00Z","title_canon_sha256":"488fd11d02c89bef714e09a5acd30082ae78ecb0dea45e9d03756435dfdd1cf3"},"schema_version":"1.0","source":{"id":"2412.03644","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2412.03644","created_at":"2026-07-05T10:06:31Z"},{"alias_kind":"arxiv_version","alias_value":"2412.03644v1","created_at":"2026-07-05T10:06:31Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2412.03644","created_at":"2026-07-05T10:06:31Z"},{"alias_kind":"pith_short_12","alias_value":"7KO3KRFG3QPN","created_at":"2026-07-05T10:06:31Z"},{"alias_kind":"pith_short_16","alias_value":"7KO3KRFG3QPN6ZWU","created_at":"2026-07-05T10:06:31Z"},{"alias_kind":"pith_short_8","alias_value":"7KO3KRFG","created_at":"2026-07-05T10:06:31Z"}],"graph_snapshots":[{"event_id":"sha256:149a06cefd0f496f82802a5c59f3fe8f8278e4ad9e7e0c92dc4420a98a3377d1","target":"graph","created_at":"2026-07-05T10:06:31Z","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"},"integrity":{"available":true,"clean":true,"detectors_run":[],"endpoint":"/pith/2412.03644/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"The nuclear structure of dusty star-forming galaxies is largely unexplored but harbours critical information about their structural evolution. Here, we present long-baseline Atacama Large (sub-)Millimetre Array (ALMA) continuum observations of a gravitationally lensed dusty star-forming galaxy at $z=2.78$. We use a pixellated lens modelling analysis to reconstruct the rest-frame 230 $\\rm\\mu$m dust emission with a mean resolution of $\\approx55$ pc and demonstrate that the inferred source properties are robust to changes in lens modelling methodology. The central 1 kpc is characterised by an exp","authors_text":"C. M. O'Riordan, D. M. Powell, F. Rizzo, H. R. Stacey, J. P. McKean, M. Kaasinen","cross_cats":[],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.GA","submitted_at":"2024-12-04T19:00:00Z","title":"A nuclear spiral in a dusty star-forming galaxy at $z=2.78$"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2412.03644","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:dba806f1c50f10fd193937fd8f606d89fe427850208fee1612950ca05fd32fff","target":"record","created_at":"2026-07-05T10:06:31Z","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":"1010f29a3cae72fd90d89183e6de90262448aca2bfa1201999ff6d5b09246578","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.GA","submitted_at":"2024-12-04T19:00:00Z","title_canon_sha256":"488fd11d02c89bef714e09a5acd30082ae78ecb0dea45e9d03756435dfdd1cf3"},"schema_version":"1.0","source":{"id":"2412.03644","kind":"arxiv","version":1}},"canonical_sha256":"fa9db544a6dc1edf66d432294cc2e86652ba4e05b40b90fdea5ff36bc79257ec","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"fa9db544a6dc1edf66d432294cc2e86652ba4e05b40b90fdea5ff36bc79257ec","first_computed_at":"2026-07-05T10:06:31.720075Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T10:06:31.720075Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"6S7jgjlYy4pZci/AdRvgF+uGe16EoJXhRE4dGm8P9pOSc0+tn0GZtTg45NSRCqxJj9BANcGM0WOmmsACyL6hBw==","signature_status":"signed_v1","signed_at":"2026-07-05T10:06:31.720550Z","signed_message":"canonical_sha256_bytes"},"source_id":"2412.03644","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:dba806f1c50f10fd193937fd8f606d89fe427850208fee1612950ca05fd32fff","sha256:149a06cefd0f496f82802a5c59f3fe8f8278e4ad9e7e0c92dc4420a98a3377d1"],"state_sha256":"a17c7775961c15760486cb2a66a7fa756d9028e0aa8200ba260cbc16b786c516"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"42DYJ81FouB0g3WG0QQ61r3Su7Yqw/zr9ljAlbLZCq3Jh3J2LDl01ZjUnZM7m7TiuVmmH44vo3OiLF+T0JzRCA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-12T18:03:02.592424Z","bundle_sha256":"c1046a39247f0be41c912017e9a3d5815841586144fd12b4d969a38535062f67"}}