{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2023:22JAL5IFF3CXXAKJG5P7UMHFEZ","short_pith_number":"pith:22JAL5IF","canonical_record":{"source":{"id":"2309.03252","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.GA","submitted_at":"2023-09-06T18:00:00Z","cross_cats_sorted":[],"title_canon_sha256":"00d8974f8dbff40a155410fcd6838d542aba91ca16df2f2327fb8de71e85014b","abstract_canon_sha256":"e3126195353fb41e425bdc93047c1d8776ea5abd1ef2769b8dc9299808803c33"},"schema_version":"1.0"},"canonical_sha256":"d69205f5052ec57b8149375ffa30e5266d760439fc7982de9afbf195ab2eaa9c","source":{"kind":"arxiv","id":"2309.03252","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2309.03252","created_at":"2026-07-05T06:48:25Z"},{"alias_kind":"arxiv_version","alias_value":"2309.03252v1","created_at":"2026-07-05T06:48:25Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2309.03252","created_at":"2026-07-05T06:48:25Z"},{"alias_kind":"pith_short_12","alias_value":"22JAL5IFF3CX","created_at":"2026-07-05T06:48:25Z"},{"alias_kind":"pith_short_16","alias_value":"22JAL5IFF3CXXAKJ","created_at":"2026-07-05T06:48:25Z"},{"alias_kind":"pith_short_8","alias_value":"22JAL5IF","created_at":"2026-07-05T06:48:25Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2023:22JAL5IFF3CXXAKJG5P7UMHFEZ","target":"record","payload":{"canonical_record":{"source":{"id":"2309.03252","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.GA","submitted_at":"2023-09-06T18:00:00Z","cross_cats_sorted":[],"title_canon_sha256":"00d8974f8dbff40a155410fcd6838d542aba91ca16df2f2327fb8de71e85014b","abstract_canon_sha256":"e3126195353fb41e425bdc93047c1d8776ea5abd1ef2769b8dc9299808803c33"},"schema_version":"1.0"},"canonical_sha256":"d69205f5052ec57b8149375ffa30e5266d760439fc7982de9afbf195ab2eaa9c","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T06:48:25.361127Z","signature_b64":"YEuQ+cM5yoo6NEaTxqfyuszCZw9FsGcZa0wBQD+kfSeQZrEmCYO+A/HCeLeGxG5jqd/PEIORBCbqWl+vNUzeBw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"d69205f5052ec57b8149375ffa30e5266d760439fc7982de9afbf195ab2eaa9c","last_reissued_at":"2026-07-05T06:48:25.360658Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T06:48:25.360658Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2309.03252","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":"2026-07-05T06:48:25Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Xe7+PFXBu5Mypi2pFIvqGLm3GAIZDtR0SyY5OXqf8oV47rmu6FdR6AhEb6EkWw8sgUqHIRiR+5MG+S+u1QJdBA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-19T23:59:00.684436Z"},"content_sha256":"d5860189a5c101202b58ed390cbae7fec9712f74c6b06572f57fa6d5c71901ca","schema_version":"1.0","event_id":"sha256:d5860189a5c101202b58ed390cbae7fec9712f74c6b06572f57fa6d5c71901ca"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2023:22JAL5IFF3CXXAKJG5P7UMHFEZ","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Prevalence of Compact Nuclear Radio Emission in Post-Merger Galaxies and its Origin","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.GA","authors_text":"Gregory Walsh, Sarah Burke-Spolaor","submitted_at":"2023-09-06T18:00:00Z","abstract_excerpt":"Post-merger galaxies are unique laboratories to study the triggering and interplay of star-formation and AGN activity. Combining new, high resolution, 10 GHz Jansky Very Large Array (VLA) observations with archival radio surveys, we have examined the radio properties of 28 spheroidal post-merger galaxies. We find a general lack of extended emission at (sub-)kiloparsec scales, indicating the prevalence of compact, nuclear radio emission in these post-merger galaxies, with the majority (16/18; 89\\%) being radio-quiet at 10 GHz. Using multi-wavelength data, we determine the origin of the radio em"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2309.03252","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/2309.03252/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":"2026-07-05T06:48:25Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"WWCijYGk9xt0ha7wEq3OVLBq3h6fu9ZhwECI7EkhwGjGlsS1FWKVUXrMHqwgko/UhMZJ5gBKankESVzuG3XXCA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-19T23:59:00.685151Z"},"content_sha256":"91f856e08dac2b92b3839d9c9db44182c7afd0b23e75f1c1805e98d1c6364b03","schema_version":"1.0","event_id":"sha256:91f856e08dac2b92b3839d9c9db44182c7afd0b23e75f1c1805e98d1c6364b03"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/22JAL5IFF3CXXAKJG5P7UMHFEZ/bundle.json","state_url":"https://pith.science/pith/22JAL5IFF3CXXAKJG5P7UMHFEZ/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/22JAL5IFF3CXXAKJG5P7UMHFEZ/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":"2026-08-19T23:59:00Z","links":{"resolver":"https://pith.science/pith/22JAL5IFF3CXXAKJG5P7UMHFEZ","bundle":"https://pith.science/pith/22JAL5IFF3CXXAKJG5P7UMHFEZ/bundle.json","state":"https://pith.science/pith/22JAL5IFF3CXXAKJG5P7UMHFEZ/state.json","well_known_bundle":"https://pith.science/.well-known/pith/22JAL5IFF3CXXAKJG5P7UMHFEZ/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2023:22JAL5IFF3CXXAKJG5P7UMHFEZ","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":"e3126195353fb41e425bdc93047c1d8776ea5abd1ef2769b8dc9299808803c33","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.GA","submitted_at":"2023-09-06T18:00:00Z","title_canon_sha256":"00d8974f8dbff40a155410fcd6838d542aba91ca16df2f2327fb8de71e85014b"},"schema_version":"1.0","source":{"id":"2309.03252","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2309.03252","created_at":"2026-07-05T06:48:25Z"},{"alias_kind":"arxiv_version","alias_value":"2309.03252v1","created_at":"2026-07-05T06:48:25Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2309.03252","created_at":"2026-07-05T06:48:25Z"},{"alias_kind":"pith_short_12","alias_value":"22JAL5IFF3CX","created_at":"2026-07-05T06:48:25Z"},{"alias_kind":"pith_short_16","alias_value":"22JAL5IFF3CXXAKJ","created_at":"2026-07-05T06:48:25Z"},{"alias_kind":"pith_short_8","alias_value":"22JAL5IF","created_at":"2026-07-05T06:48:25Z"}],"graph_snapshots":[{"event_id":"sha256:91f856e08dac2b92b3839d9c9db44182c7afd0b23e75f1c1805e98d1c6364b03","target":"graph","created_at":"2026-07-05T06:48:25Z","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"},"integrity":{"available":true,"clean":true,"detectors_run":[],"endpoint":"/pith/2309.03252/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Post-merger galaxies are unique laboratories to study the triggering and interplay of star-formation and AGN activity. Combining new, high resolution, 10 GHz Jansky Very Large Array (VLA) observations with archival radio surveys, we have examined the radio properties of 28 spheroidal post-merger galaxies. We find a general lack of extended emission at (sub-)kiloparsec scales, indicating the prevalence of compact, nuclear radio emission in these post-merger galaxies, with the majority (16/18; 89\\%) being radio-quiet at 10 GHz. Using multi-wavelength data, we determine the origin of the radio em","authors_text":"Gregory Walsh, Sarah Burke-Spolaor","cross_cats":[],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.GA","submitted_at":"2023-09-06T18:00:00Z","title":"Prevalence of Compact Nuclear Radio Emission in Post-Merger Galaxies and its Origin"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2309.03252","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:d5860189a5c101202b58ed390cbae7fec9712f74c6b06572f57fa6d5c71901ca","target":"record","created_at":"2026-07-05T06:48:25Z","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":"e3126195353fb41e425bdc93047c1d8776ea5abd1ef2769b8dc9299808803c33","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.GA","submitted_at":"2023-09-06T18:00:00Z","title_canon_sha256":"00d8974f8dbff40a155410fcd6838d542aba91ca16df2f2327fb8de71e85014b"},"schema_version":"1.0","source":{"id":"2309.03252","kind":"arxiv","version":1}},"canonical_sha256":"d69205f5052ec57b8149375ffa30e5266d760439fc7982de9afbf195ab2eaa9c","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"d69205f5052ec57b8149375ffa30e5266d760439fc7982de9afbf195ab2eaa9c","first_computed_at":"2026-07-05T06:48:25.360658Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T06:48:25.360658Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"YEuQ+cM5yoo6NEaTxqfyuszCZw9FsGcZa0wBQD+kfSeQZrEmCYO+A/HCeLeGxG5jqd/PEIORBCbqWl+vNUzeBw==","signature_status":"signed_v1","signed_at":"2026-07-05T06:48:25.361127Z","signed_message":"canonical_sha256_bytes"},"source_id":"2309.03252","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:d5860189a5c101202b58ed390cbae7fec9712f74c6b06572f57fa6d5c71901ca","sha256:91f856e08dac2b92b3839d9c9db44182c7afd0b23e75f1c1805e98d1c6364b03"],"state_sha256":"bbedcd9dbf400c61e02fc9fadaa8b9dbe9c866858fe475f4f70c102864fef9b3"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"cV8Cu4T9WdUVagkLllV64mcl3x/yXvFZNGkXXXaSaF/qRk4zJPcI4HUBOFuMRKhitL8j4t/KGgrgcebBxrN7Ag==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-19T23:59:00.692420Z","bundle_sha256":"953a0549919e4ba94ef38ecc68ad4c6c0861310dcced19b76eaa6abeafc2bbae"}}