{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2023:CHV4U5EY3EQDUOWVV3YMK7KF2I","short_pith_number":"pith:CHV4U5EY","canonical_record":{"source":{"id":"2308.08716","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2023-08-17T00:43:21Z","cross_cats_sorted":["astro-ph.GA"],"title_canon_sha256":"c4bae27e7572a54cb27992b2cf7422ec3550fd22a77d0a931342b21d75507a54","abstract_canon_sha256":"1003c4f6662189abbb45caca02f1bb7bf694c26dbb3e8fc77e350d5f715adb99"},"schema_version":"1.0"},"canonical_sha256":"11ebca7498d9203a3ad5aef0c57d45d23cad86e2bd280a390c199df4a68b88cf","source":{"kind":"arxiv","id":"2308.08716","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2308.08716","created_at":"2026-07-05T06:42:10Z"},{"alias_kind":"arxiv_version","alias_value":"2308.08716v1","created_at":"2026-07-05T06:42:10Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2308.08716","created_at":"2026-07-05T06:42:10Z"},{"alias_kind":"pith_short_12","alias_value":"CHV4U5EY3EQD","created_at":"2026-07-05T06:42:10Z"},{"alias_kind":"pith_short_16","alias_value":"CHV4U5EY3EQDUOWV","created_at":"2026-07-05T06:42:10Z"},{"alias_kind":"pith_short_8","alias_value":"CHV4U5EY","created_at":"2026-07-05T06:42:10Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2023:CHV4U5EY3EQDUOWVV3YMK7KF2I","target":"record","payload":{"canonical_record":{"source":{"id":"2308.08716","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2023-08-17T00:43:21Z","cross_cats_sorted":["astro-ph.GA"],"title_canon_sha256":"c4bae27e7572a54cb27992b2cf7422ec3550fd22a77d0a931342b21d75507a54","abstract_canon_sha256":"1003c4f6662189abbb45caca02f1bb7bf694c26dbb3e8fc77e350d5f715adb99"},"schema_version":"1.0"},"canonical_sha256":"11ebca7498d9203a3ad5aef0c57d45d23cad86e2bd280a390c199df4a68b88cf","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T06:42:10.311787Z","signature_b64":"l5wN0GJBL75imM761QchBwNDvq2WIBqTBVPHQxooQjhMnAyrPKqegiWU/WEKTNNVuWrN63wbnSh859rT+ldcAg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"11ebca7498d9203a3ad5aef0c57d45d23cad86e2bd280a390c199df4a68b88cf","last_reissued_at":"2026-07-05T06:42:10.311410Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T06:42:10.311410Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2308.08716","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":"2026-07-05T06:42:10Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Y2H7IcNYDWpl0p0uaAF6bWeNDMCKdwWGIreseGqOBRelQA/RBrzfOv5YCaxN6TnljEnwOQQhm7TDQzBmq68fAQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-14T08:55:29.912991Z"},"content_sha256":"197a02a12d8e46c46c0e8bb2ea2865528c9ed14fd81852b8b210d933b6ef411e","schema_version":"1.0","event_id":"sha256:197a02a12d8e46c46c0e8bb2ea2865528c9ed14fd81852b8b210d933b6ef411e"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2023:CHV4U5EY3EQDUOWVV3YMK7KF2I","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"EMU Detection of a Large and Low Surface Brightness Galactic SNR G288.8-6.3","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.GA"],"primary_cat":"astro-ph.HE","authors_text":"Adriano Ingallinera, Andrew M. Hopkins, Anna D. Kapinska, B\\\"arbel S. Koribalski, Bojan Arbutina, Branislav Vukoti\\'c, Brianna Ball, Christopher Burger-Scheidlin, Corrado Trigilio, Cristobal Bordiu, Dejan Uro\\v{s}evi\\'c, Denis Leahy, Evan Crawford, Filomena Bufano, Frank Haberl, Gavin Rowell, Grazia Umana, Hidetoshi Sano, Jayanne English, Jonathan Mackey, Luciano Nicastro, Manami Sasaki, Milorad Stupar, Miroslav D. Filipovi\\'c, Natasha Hurley-Walker, Patrick J. Kavanagh, Peter J. Macgregor, R. Alsulami, Rami Z. E. Alsaberi, Ray P. Norris, Robert Brose, Roland Kothes, Sanja Lazarevi\\'c, Sara Loru, Shi Dai, Simone Riggi, Tessa Vernstrom, T.H. Jarrett, Werner Becker","submitted_at":"2023-08-17T00:43:21Z","abstract_excerpt":"We present the serendipitous detection of a new Galactic Supernova Remnant (SNR), G288.8-6.3 using data from the Australian Square Kilometre Array Pathfinder (ASKAP)-Evolutionary Map of the Universe (EMU) survey. Using multi-frequency analysis, we confirm this object as an evolved Galactic SNR at high Galactic latitude with low radio surface brightness and typical SNR spectral index of $\\alpha = -0.41\\pm0.12$. To determine the magnetic field strength in SNR G288.8-6.3, we present the first derivation of the equipartition formulae for SNRs with spectral indices $\\alpha>-0.5$. The angular size i"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2308.08716","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/2308.08716/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":"2026-07-05T06:42:10Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"PhiS/JT5Bb7BUN9sWLYqqEhKl8O6Kx0Fw6UeRaM7lSDngLLiTCna4YK2GsyGoCtF6ZVNzICGoIZJYdapc3oDAQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-14T08:55:29.913340Z"},"content_sha256":"74e0fee3363b0c1706cf71ef1e0161afd0b5a601aa1d90eb91eb967aa425c283","schema_version":"1.0","event_id":"sha256:74e0fee3363b0c1706cf71ef1e0161afd0b5a601aa1d90eb91eb967aa425c283"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/CHV4U5EY3EQDUOWVV3YMK7KF2I/bundle.json","state_url":"https://pith.science/pith/CHV4U5EY3EQDUOWVV3YMK7KF2I/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/CHV4U5EY3EQDUOWVV3YMK7KF2I/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":"2026-08-14T08:55:29Z","links":{"resolver":"https://pith.science/pith/CHV4U5EY3EQDUOWVV3YMK7KF2I","bundle":"https://pith.science/pith/CHV4U5EY3EQDUOWVV3YMK7KF2I/bundle.json","state":"https://pith.science/pith/CHV4U5EY3EQDUOWVV3YMK7KF2I/state.json","well_known_bundle":"https://pith.science/.well-known/pith/CHV4U5EY3EQDUOWVV3YMK7KF2I/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2023:CHV4U5EY3EQDUOWVV3YMK7KF2I","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":"1003c4f6662189abbb45caca02f1bb7bf694c26dbb3e8fc77e350d5f715adb99","cross_cats_sorted":["astro-ph.GA"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2023-08-17T00:43:21Z","title_canon_sha256":"c4bae27e7572a54cb27992b2cf7422ec3550fd22a77d0a931342b21d75507a54"},"schema_version":"1.0","source":{"id":"2308.08716","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2308.08716","created_at":"2026-07-05T06:42:10Z"},{"alias_kind":"arxiv_version","alias_value":"2308.08716v1","created_at":"2026-07-05T06:42:10Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2308.08716","created_at":"2026-07-05T06:42:10Z"},{"alias_kind":"pith_short_12","alias_value":"CHV4U5EY3EQD","created_at":"2026-07-05T06:42:10Z"},{"alias_kind":"pith_short_16","alias_value":"CHV4U5EY3EQDUOWV","created_at":"2026-07-05T06:42:10Z"},{"alias_kind":"pith_short_8","alias_value":"CHV4U5EY","created_at":"2026-07-05T06:42:10Z"}],"graph_snapshots":[{"event_id":"sha256:74e0fee3363b0c1706cf71ef1e0161afd0b5a601aa1d90eb91eb967aa425c283","target":"graph","created_at":"2026-07-05T06:42:10Z","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/2308.08716/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We present the serendipitous detection of a new Galactic Supernova Remnant (SNR), G288.8-6.3 using data from the Australian Square Kilometre Array Pathfinder (ASKAP)-Evolutionary Map of the Universe (EMU) survey. Using multi-frequency analysis, we confirm this object as an evolved Galactic SNR at high Galactic latitude with low radio surface brightness and typical SNR spectral index of $\\alpha = -0.41\\pm0.12$. To determine the magnetic field strength in SNR G288.8-6.3, we present the first derivation of the equipartition formulae for SNRs with spectral indices $\\alpha>-0.5$. The angular size i","authors_text":"Adriano Ingallinera, Andrew M. Hopkins, Anna D. Kapinska, B\\\"arbel S. Koribalski, Bojan Arbutina, Branislav Vukoti\\'c, Brianna Ball, Christopher Burger-Scheidlin, Corrado Trigilio, Cristobal Bordiu, Dejan Uro\\v{s}evi\\'c, Denis Leahy, Evan Crawford, Filomena Bufano, Frank Haberl, Gavin Rowell, Grazia Umana, Hidetoshi Sano, Jayanne English, Jonathan Mackey, Luciano Nicastro, Manami Sasaki, Milorad Stupar, Miroslav D. Filipovi\\'c, Natasha Hurley-Walker, Patrick J. Kavanagh, Peter J. Macgregor, R. Alsulami, Rami Z. E. Alsaberi, Ray P. Norris, Robert Brose, Roland Kothes, Sanja Lazarevi\\'c, Sara Loru, Shi Dai, Simone Riggi, Tessa Vernstrom, T.H. Jarrett, Werner Becker","cross_cats":["astro-ph.GA"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2023-08-17T00:43:21Z","title":"EMU Detection of a Large and Low Surface Brightness Galactic SNR G288.8-6.3"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2308.08716","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":"sha256:197a02a12d8e46c46c0e8bb2ea2865528c9ed14fd81852b8b210d933b6ef411e","target":"record","created_at":"2026-07-05T06:42:10Z","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":"1003c4f6662189abbb45caca02f1bb7bf694c26dbb3e8fc77e350d5f715adb99","cross_cats_sorted":["astro-ph.GA"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2023-08-17T00:43:21Z","title_canon_sha256":"c4bae27e7572a54cb27992b2cf7422ec3550fd22a77d0a931342b21d75507a54"},"schema_version":"1.0","source":{"id":"2308.08716","kind":"arxiv","version":1}},"canonical_sha256":"11ebca7498d9203a3ad5aef0c57d45d23cad86e2bd280a390c199df4a68b88cf","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"11ebca7498d9203a3ad5aef0c57d45d23cad86e2bd280a390c199df4a68b88cf","first_computed_at":"2026-07-05T06:42:10.311410Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T06:42:10.311410Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"l5wN0GJBL75imM761QchBwNDvq2WIBqTBVPHQxooQjhMnAyrPKqegiWU/WEKTNNVuWrN63wbnSh859rT+ldcAg==","signature_status":"signed_v1","signed_at":"2026-07-05T06:42:10.311787Z","signed_message":"canonical_sha256_bytes"},"source_id":"2308.08716","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:197a02a12d8e46c46c0e8bb2ea2865528c9ed14fd81852b8b210d933b6ef411e","sha256:74e0fee3363b0c1706cf71ef1e0161afd0b5a601aa1d90eb91eb967aa425c283"],"state_sha256":"04947fdbb123002fec69d746c399d05d79578f8d2d3b218fe2335efc50011d6f"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ZH6Pk9uvHM3BSvaaTTndV47H03VEM+DJZWVY/vpylwjl6oYlhmiUF00JA3r7kg8H+QfvPVkC9otSZNMyZcIdDA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-14T08:55:29.917080Z","bundle_sha256":"08e229cbe0be9d86fc2463c497386a404b0e549e56ae3b9847f9c9e9935fb59e"}}