{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2024:KIELGQ2APEUUQGAH6QO4RK2XI2","short_pith_number":"pith:KIELGQ2A","canonical_record":{"source":{"id":"2412.20836","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by-nc-sa/4.0/","primary_cat":"astro-ph.HE","submitted_at":"2024-12-30T10:02:34Z","cross_cats_sorted":[],"title_canon_sha256":"b7c8463da38beee68150c6cf06d1a6db4d97030c4cf0a5d9ad0ff3d60c447dc5","abstract_canon_sha256":"8834a5564bc4027c1630ad2844e807f0c8d0f794f7355159484c1fe4758612bc"},"schema_version":"1.0"},"canonical_sha256":"5208b343407929481807f41dc8ab574685e3d966dd99ec806c3eeec6db39dd54","source":{"kind":"arxiv","id":"2412.20836","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2412.20836","created_at":"2026-07-05T09:55:23Z"},{"alias_kind":"arxiv_version","alias_value":"2412.20836v1","created_at":"2026-07-05T09:55:23Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2412.20836","created_at":"2026-07-05T09:55:23Z"},{"alias_kind":"pith_short_12","alias_value":"KIELGQ2APEUU","created_at":"2026-07-05T09:55:23Z"},{"alias_kind":"pith_short_16","alias_value":"KIELGQ2APEUUQGAH","created_at":"2026-07-05T09:55:23Z"},{"alias_kind":"pith_short_8","alias_value":"KIELGQ2A","created_at":"2026-07-05T09:55:23Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2024:KIELGQ2APEUUQGAH6QO4RK2XI2","target":"record","payload":{"canonical_record":{"source":{"id":"2412.20836","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by-nc-sa/4.0/","primary_cat":"astro-ph.HE","submitted_at":"2024-12-30T10:02:34Z","cross_cats_sorted":[],"title_canon_sha256":"b7c8463da38beee68150c6cf06d1a6db4d97030c4cf0a5d9ad0ff3d60c447dc5","abstract_canon_sha256":"8834a5564bc4027c1630ad2844e807f0c8d0f794f7355159484c1fe4758612bc"},"schema_version":"1.0"},"canonical_sha256":"5208b343407929481807f41dc8ab574685e3d966dd99ec806c3eeec6db39dd54","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T09:55:23.420681Z","signature_b64":"YhrnZwpMGpn5u73cqaPvy2/ukR41tUT2E8aiv0Pa0FiK7ovv4oGYBOJPwOYwEKFxuGQmcWOxD1tc8KDVX7/oAA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"5208b343407929481807f41dc8ab574685e3d966dd99ec806c3eeec6db39dd54","last_reissued_at":"2026-07-05T09:55:23.420161Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T09:55:23.420161Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2412.20836","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":"2026-07-05T09:55:23Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Xi+8lu03eXfuLaA1DjoVY3tS+7x4Wsf6ZVbq3I2Gy3LNDneXYK1zZ5rL7uEkhA7cijCO7KjU+JfEQqWoMHiMCw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-07T06:15:46.164790Z"},"content_sha256":"bd10f1cd6e435633dd25ae6ee2709673558beec0f47a0ddef97fa2cb83e2633e","schema_version":"1.0","event_id":"sha256:bd10f1cd6e435633dd25ae6ee2709673558beec0f47a0ddef97fa2cb83e2633e"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2024:KIELGQ2APEUUQGAH6QO4RK2XI2","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Diprotodon on the sky. The Large Galactic Supernova Remnant (SNR) G278.94+1.35","license":"http://creativecommons.org/licenses/by-nc-sa/4.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.HE","authors_text":"A. Ingallinera, A. M. Hopkins, B. Arbutina, B. Ball, B. S. Koribalski, B. Vukoti\\'c, C. Bordiu, C. Burger-Scheidlin, C. J. Riseley, D. Leahy, D. Uro\\v{s}evi\\'c, E. J. Crawford, F. Bufano, G. Rowell, G. Umana, H. Inoue, H. Sano, I. Sushch, J. L. Payne, J. Mackey, J.West, K. J. Luken, M. Araya, Miroslav D. Filipovi\\'c, M. Sasaki, M. Stupar, N. Hurley-Walker, P. J. Macgregor, P. Martin, R. Brose, R. Kothes, R. P. Norris, R. S. Fuller, R. Z. E. Alsaberi, S. Dai, S. Lazarevi\\'c, S. Riggi, S. W. Duchesne, T. A. Collins, T. H. Jarrett, T. Vernstrom, V. Velovi\\'c, Y. Fukui, Z. J. Smeaton","submitted_at":"2024-12-30T10:02:34Z","abstract_excerpt":"We present a re-discovery of G278.94+1.35 as possibly one of the largest known Galactic supernova remnants (SNR) - that we name Diprotodon. While previously established as a Galactic SNR, Diprotodon is visible in our new EMU and GLEAM radio continuum images at an angular size of 3.33x3.23 deg, much larger than previously measured. At the previously suggested distance of 2.7 kpc, this implies a diameter of 157x152 pc. This size would qualify Diprotodon as the largest known SNR and pushes our estimates of SNR sizes to the upper limits. We investigate the environment in which the SNR is located a"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2412.20836","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/2412.20836/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":"2026-07-05T09:55:23Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"x2Yb6WjQMGCQu8frKWJqAYziUBS0iCp9RmQxlhBDTAYRsJc6cqb8g1ZURd/bKAS/c+cHabVOGlP4PKiuprQKCw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-07T06:15:46.165349Z"},"content_sha256":"35f60fc7a975a229b6c28e0709311e0648c4765000e73195ffb922db0e218420","schema_version":"1.0","event_id":"sha256:35f60fc7a975a229b6c28e0709311e0648c4765000e73195ffb922db0e218420"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/KIELGQ2APEUUQGAH6QO4RK2XI2/bundle.json","state_url":"https://pith.science/pith/KIELGQ2APEUUQGAH6QO4RK2XI2/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/KIELGQ2APEUUQGAH6QO4RK2XI2/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":"2026-08-07T06:15:46Z","links":{"resolver":"https://pith.science/pith/KIELGQ2APEUUQGAH6QO4RK2XI2","bundle":"https://pith.science/pith/KIELGQ2APEUUQGAH6QO4RK2XI2/bundle.json","state":"https://pith.science/pith/KIELGQ2APEUUQGAH6QO4RK2XI2/state.json","well_known_bundle":"https://pith.science/.well-known/pith/KIELGQ2APEUUQGAH6QO4RK2XI2/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2024:KIELGQ2APEUUQGAH6QO4RK2XI2","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":"8834a5564bc4027c1630ad2844e807f0c8d0f794f7355159484c1fe4758612bc","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by-nc-sa/4.0/","primary_cat":"astro-ph.HE","submitted_at":"2024-12-30T10:02:34Z","title_canon_sha256":"b7c8463da38beee68150c6cf06d1a6db4d97030c4cf0a5d9ad0ff3d60c447dc5"},"schema_version":"1.0","source":{"id":"2412.20836","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2412.20836","created_at":"2026-07-05T09:55:23Z"},{"alias_kind":"arxiv_version","alias_value":"2412.20836v1","created_at":"2026-07-05T09:55:23Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2412.20836","created_at":"2026-07-05T09:55:23Z"},{"alias_kind":"pith_short_12","alias_value":"KIELGQ2APEUU","created_at":"2026-07-05T09:55:23Z"},{"alias_kind":"pith_short_16","alias_value":"KIELGQ2APEUUQGAH","created_at":"2026-07-05T09:55:23Z"},{"alias_kind":"pith_short_8","alias_value":"KIELGQ2A","created_at":"2026-07-05T09:55:23Z"}],"graph_snapshots":[{"event_id":"sha256:35f60fc7a975a229b6c28e0709311e0648c4765000e73195ffb922db0e218420","target":"graph","created_at":"2026-07-05T09:55:23Z","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/2412.20836/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We present a re-discovery of G278.94+1.35 as possibly one of the largest known Galactic supernova remnants (SNR) - that we name Diprotodon. While previously established as a Galactic SNR, Diprotodon is visible in our new EMU and GLEAM radio continuum images at an angular size of 3.33x3.23 deg, much larger than previously measured. At the previously suggested distance of 2.7 kpc, this implies a diameter of 157x152 pc. This size would qualify Diprotodon as the largest known SNR and pushes our estimates of SNR sizes to the upper limits. We investigate the environment in which the SNR is located a","authors_text":"A. Ingallinera, A. M. Hopkins, B. Arbutina, B. Ball, B. S. Koribalski, B. Vukoti\\'c, C. Bordiu, C. Burger-Scheidlin, C. J. Riseley, D. Leahy, D. Uro\\v{s}evi\\'c, E. J. Crawford, F. Bufano, G. Rowell, G. Umana, H. Inoue, H. Sano, I. Sushch, J. L. Payne, J. Mackey, J.West, K. J. Luken, M. Araya, Miroslav D. Filipovi\\'c, M. Sasaki, M. Stupar, N. Hurley-Walker, P. J. Macgregor, P. Martin, R. Brose, R. Kothes, R. P. Norris, R. S. Fuller, R. Z. E. Alsaberi, S. Dai, S. Lazarevi\\'c, S. Riggi, S. W. Duchesne, T. A. Collins, T. H. Jarrett, T. Vernstrom, V. Velovi\\'c, Y. Fukui, Z. J. Smeaton","cross_cats":[],"headline":"","license":"http://creativecommons.org/licenses/by-nc-sa/4.0/","primary_cat":"astro-ph.HE","submitted_at":"2024-12-30T10:02:34Z","title":"Diprotodon on the sky. The Large Galactic Supernova Remnant (SNR) G278.94+1.35"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2412.20836","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:bd10f1cd6e435633dd25ae6ee2709673558beec0f47a0ddef97fa2cb83e2633e","target":"record","created_at":"2026-07-05T09:55:23Z","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":"8834a5564bc4027c1630ad2844e807f0c8d0f794f7355159484c1fe4758612bc","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by-nc-sa/4.0/","primary_cat":"astro-ph.HE","submitted_at":"2024-12-30T10:02:34Z","title_canon_sha256":"b7c8463da38beee68150c6cf06d1a6db4d97030c4cf0a5d9ad0ff3d60c447dc5"},"schema_version":"1.0","source":{"id":"2412.20836","kind":"arxiv","version":1}},"canonical_sha256":"5208b343407929481807f41dc8ab574685e3d966dd99ec806c3eeec6db39dd54","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"5208b343407929481807f41dc8ab574685e3d966dd99ec806c3eeec6db39dd54","first_computed_at":"2026-07-05T09:55:23.420161Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T09:55:23.420161Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"YhrnZwpMGpn5u73cqaPvy2/ukR41tUT2E8aiv0Pa0FiK7ovv4oGYBOJPwOYwEKFxuGQmcWOxD1tc8KDVX7/oAA==","signature_status":"signed_v1","signed_at":"2026-07-05T09:55:23.420681Z","signed_message":"canonical_sha256_bytes"},"source_id":"2412.20836","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:bd10f1cd6e435633dd25ae6ee2709673558beec0f47a0ddef97fa2cb83e2633e","sha256:35f60fc7a975a229b6c28e0709311e0648c4765000e73195ffb922db0e218420"],"state_sha256":"faaee13ba0d8d8a6eee10208db89369474aa3a4017656d4b6a19a3df78c82d69"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"vzIqNIdBB9rGThRZR+sSsK5LI8czUgTY5DcEOnK6yApBbI4QHeKQvN8bQbW6D1Qa2S/+695a6tKjQdTBfH2LCw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-07T06:15:46.169435Z","bundle_sha256":"20fcb32182c92176362f0e0e38cec919215a32ec92fcb763431002ead3dcb555"}}