{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2024:DMON264ZWCNYSFCT5Z4KNZHXJA","short_pith_number":"pith:DMON264Z","canonical_record":{"source":{"id":"2408.16814","kind":"arxiv","version":2},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.CO","submitted_at":"2024-08-29T18:00:00Z","cross_cats_sorted":[],"title_canon_sha256":"365491a427566eab0a707f4351f4e2387c866827b55a7bdf767bf1d3be4323c3","abstract_canon_sha256":"1a80124034c62b49e374ddbfc94bd2d62f5d61ab9b5b168eed9e091625e1bb5c"},"schema_version":"1.0"},"canonical_sha256":"1b1cdd7b99b09b891453ee78a6e4f7483ad429a049f3c501d66edcb65f8a2ae8","source":{"kind":"arxiv","id":"2408.16814","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2408.16814","created_at":"2026-07-05T12:01:19Z"},{"alias_kind":"arxiv_version","alias_value":"2408.16814v2","created_at":"2026-07-05T12:01:19Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2408.16814","created_at":"2026-07-05T12:01:19Z"},{"alias_kind":"pith_short_12","alias_value":"DMON264ZWCNY","created_at":"2026-07-05T12:01:19Z"},{"alias_kind":"pith_short_16","alias_value":"DMON264ZWCNYSFCT","created_at":"2026-07-05T12:01:19Z"},{"alias_kind":"pith_short_8","alias_value":"DMON264Z","created_at":"2026-07-05T12:01:19Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2024:DMON264ZWCNYSFCT5Z4KNZHXJA","target":"record","payload":{"canonical_record":{"source":{"id":"2408.16814","kind":"arxiv","version":2},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.CO","submitted_at":"2024-08-29T18:00:00Z","cross_cats_sorted":[],"title_canon_sha256":"365491a427566eab0a707f4351f4e2387c866827b55a7bdf767bf1d3be4323c3","abstract_canon_sha256":"1a80124034c62b49e374ddbfc94bd2d62f5d61ab9b5b168eed9e091625e1bb5c"},"schema_version":"1.0"},"canonical_sha256":"1b1cdd7b99b09b891453ee78a6e4f7483ad429a049f3c501d66edcb65f8a2ae8","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T12:01:19.042820Z","signature_b64":"Lyy4nq5yXa9OfAo7s0Zs321MgyBZ9t//AKKL1CbPnurADKRA9LhC3cxY5u7zqw+qV3BNL3Lkg5Ikcv3wXwGeAQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"1b1cdd7b99b09b891453ee78a6e4f7483ad429a049f3c501d66edcb65f8a2ae8","last_reissued_at":"2026-07-05T12:01:19.042310Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T12:01:19.042310Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2408.16814","source_version":2,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-05T12:01:19Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"H1bRzpl/H1q/R/SS8w+hiLLcIoBbdsceaOu4kZoSxxqbF3b6gIi0nfbbhT42V7BOH11lPWsaHFkXPEh7AkIgDw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-04T19:27:47.914680Z"},"content_sha256":"cd9642400ed09fb0b9661d757819e167928db080935cd0e35261ffb4f555e412","schema_version":"1.0","event_id":"sha256:cd9642400ed09fb0b9661d757819e167928db080935cd0e35261ffb4f555e412"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2024:DMON264ZWCNYSFCT5Z4KNZHXJA","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Deep learning approach for identification of HII regions during reionization in 21-cm observations -- III. image recovery","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.CO","authors_text":"Chris Finlay, Hatem Ghorbel, Massimo De Santis, Michele Bianco, Philipp Denzel, Rohit Sharma, Sambit. K. Giri, Shreyam Parth Krishna, Tianyue Chen, Viraj Nistane","submitted_at":"2024-08-29T18:00:00Z","abstract_excerpt":"The low-frequency component of the upcoming Square Kilometre Array Observatory (SKA-Low) will be sensitive enough to construct 3D tomographic images of the 21-cm signal distribution during reionisation. However, foreground contamination poses challenges for detecting this signal, and image recovery will heavily rely on effective mitigation methods. We introduce \\texttt{SERENEt}, a deep-learning framework designed to recover the 21-cm signal from SKA-Low's foreground-contaminated observations, enabling the detection of ionised (HII) and neutral (HI) regions during reionisation. \\texttt{SERENEt}"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2408.16814","kind":"arxiv","version":2},"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/2408.16814/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":"2026-07-05T12:01:19Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"GxDJrJOltHfAY+SscOztK86JhUJhEwa7T3cgD3LuXLgppbkEKj+gvUlnLKRWNvYFPKURX/qeuWmGtrx7b71wAA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-04T19:27:47.915199Z"},"content_sha256":"0abd578021de48b3be50ac632d124b0be4edee0361032ee1f7e8074725e99ef6","schema_version":"1.0","event_id":"sha256:0abd578021de48b3be50ac632d124b0be4edee0361032ee1f7e8074725e99ef6"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/DMON264ZWCNYSFCT5Z4KNZHXJA/bundle.json","state_url":"https://pith.science/pith/DMON264ZWCNYSFCT5Z4KNZHXJA/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/DMON264ZWCNYSFCT5Z4KNZHXJA/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":"2026-08-04T19:27:47Z","links":{"resolver":"https://pith.science/pith/DMON264ZWCNYSFCT5Z4KNZHXJA","bundle":"https://pith.science/pith/DMON264ZWCNYSFCT5Z4KNZHXJA/bundle.json","state":"https://pith.science/pith/DMON264ZWCNYSFCT5Z4KNZHXJA/state.json","well_known_bundle":"https://pith.science/.well-known/pith/DMON264ZWCNYSFCT5Z4KNZHXJA/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2024:DMON264ZWCNYSFCT5Z4KNZHXJA","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":"1a80124034c62b49e374ddbfc94bd2d62f5d61ab9b5b168eed9e091625e1bb5c","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.CO","submitted_at":"2024-08-29T18:00:00Z","title_canon_sha256":"365491a427566eab0a707f4351f4e2387c866827b55a7bdf767bf1d3be4323c3"},"schema_version":"1.0","source":{"id":"2408.16814","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2408.16814","created_at":"2026-07-05T12:01:19Z"},{"alias_kind":"arxiv_version","alias_value":"2408.16814v2","created_at":"2026-07-05T12:01:19Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2408.16814","created_at":"2026-07-05T12:01:19Z"},{"alias_kind":"pith_short_12","alias_value":"DMON264ZWCNY","created_at":"2026-07-05T12:01:19Z"},{"alias_kind":"pith_short_16","alias_value":"DMON264ZWCNYSFCT","created_at":"2026-07-05T12:01:19Z"},{"alias_kind":"pith_short_8","alias_value":"DMON264Z","created_at":"2026-07-05T12:01:19Z"}],"graph_snapshots":[{"event_id":"sha256:0abd578021de48b3be50ac632d124b0be4edee0361032ee1f7e8074725e99ef6","target":"graph","created_at":"2026-07-05T12:01:19Z","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/2408.16814/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"The low-frequency component of the upcoming Square Kilometre Array Observatory (SKA-Low) will be sensitive enough to construct 3D tomographic images of the 21-cm signal distribution during reionisation. However, foreground contamination poses challenges for detecting this signal, and image recovery will heavily rely on effective mitigation methods. We introduce \\texttt{SERENEt}, a deep-learning framework designed to recover the 21-cm signal from SKA-Low's foreground-contaminated observations, enabling the detection of ionised (HII) and neutral (HI) regions during reionisation. \\texttt{SERENEt}","authors_text":"Chris Finlay, Hatem Ghorbel, Massimo De Santis, Michele Bianco, Philipp Denzel, Rohit Sharma, Sambit. K. Giri, Shreyam Parth Krishna, Tianyue Chen, Viraj Nistane","cross_cats":[],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.CO","submitted_at":"2024-08-29T18:00:00Z","title":"Deep learning approach for identification of HII regions during reionization in 21-cm observations -- III. image recovery"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2408.16814","kind":"arxiv","version":2},"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:cd9642400ed09fb0b9661d757819e167928db080935cd0e35261ffb4f555e412","target":"record","created_at":"2026-07-05T12:01:19Z","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":"1a80124034c62b49e374ddbfc94bd2d62f5d61ab9b5b168eed9e091625e1bb5c","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.CO","submitted_at":"2024-08-29T18:00:00Z","title_canon_sha256":"365491a427566eab0a707f4351f4e2387c866827b55a7bdf767bf1d3be4323c3"},"schema_version":"1.0","source":{"id":"2408.16814","kind":"arxiv","version":2}},"canonical_sha256":"1b1cdd7b99b09b891453ee78a6e4f7483ad429a049f3c501d66edcb65f8a2ae8","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"1b1cdd7b99b09b891453ee78a6e4f7483ad429a049f3c501d66edcb65f8a2ae8","first_computed_at":"2026-07-05T12:01:19.042310Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T12:01:19.042310Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"Lyy4nq5yXa9OfAo7s0Zs321MgyBZ9t//AKKL1CbPnurADKRA9LhC3cxY5u7zqw+qV3BNL3Lkg5Ikcv3wXwGeAQ==","signature_status":"signed_v1","signed_at":"2026-07-05T12:01:19.042820Z","signed_message":"canonical_sha256_bytes"},"source_id":"2408.16814","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:cd9642400ed09fb0b9661d757819e167928db080935cd0e35261ffb4f555e412","sha256:0abd578021de48b3be50ac632d124b0be4edee0361032ee1f7e8074725e99ef6"],"state_sha256":"0f17d39ba735e4c7ca634f70039f096f415a7185a787b8ffda6f08b598d0b66d"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"anrAzPeQ3bl7pxgxT058fMuFyzS1BJd/Uv5mokOy6XELSfV/D4L70Z22izv6vQUPMMDvy+rNMkgl0KRUk4GvAg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-04T19:27:47.919095Z","bundle_sha256":"1411f98063bd9b61dc8e7c43fd927f5f39eca6624e08828f4663457206793a9c"}}