{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2022:MKN2SURTITITBQJHVIDC4QBLRS","short_pith_number":"pith:MKN2SURT","canonical_record":{"source":{"id":"2211.10544","kind":"arxiv","version":2},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.HE","submitted_at":"2022-11-19T00:17:44Z","cross_cats_sorted":["astro-ph.SR"],"title_canon_sha256":"8c4287de974d7f0830eddf03179ee727460a3a86a8c8c65da574cffb3df0b407","abstract_canon_sha256":"9804bc22ea297faca90823b1826edd496f8d9942dd79a4ddc592437a2ea85060"},"schema_version":"1.0"},"canonical_sha256":"629ba9523344d130c127aa062e402b8cba0853802e859333dcee511fc5c1598c","source":{"kind":"arxiv","id":"2211.10544","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2211.10544","created_at":"2026-07-05T05:39:25Z"},{"alias_kind":"arxiv_version","alias_value":"2211.10544v2","created_at":"2026-07-05T05:39:25Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2211.10544","created_at":"2026-07-05T05:39:25Z"},{"alias_kind":"pith_short_12","alias_value":"MKN2SURTITIT","created_at":"2026-07-05T05:39:25Z"},{"alias_kind":"pith_short_16","alias_value":"MKN2SURTITITBQJH","created_at":"2026-07-05T05:39:25Z"},{"alias_kind":"pith_short_8","alias_value":"MKN2SURT","created_at":"2026-07-05T05:39:25Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2022:MKN2SURTITITBQJHVIDC4QBLRS","target":"record","payload":{"canonical_record":{"source":{"id":"2211.10544","kind":"arxiv","version":2},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.HE","submitted_at":"2022-11-19T00:17:44Z","cross_cats_sorted":["astro-ph.SR"],"title_canon_sha256":"8c4287de974d7f0830eddf03179ee727460a3a86a8c8c65da574cffb3df0b407","abstract_canon_sha256":"9804bc22ea297faca90823b1826edd496f8d9942dd79a4ddc592437a2ea85060"},"schema_version":"1.0"},"canonical_sha256":"629ba9523344d130c127aa062e402b8cba0853802e859333dcee511fc5c1598c","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T05:39:25.691020Z","signature_b64":"AgWtwzxUHIWwx5RiDhXxUl9oAvNu/GbuS6k4J5MH2iFg4aBz2+zSIF8T9smvHHcH339HWr8y+SosgePtsZK5Cw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"629ba9523344d130c127aa062e402b8cba0853802e859333dcee511fc5c1598c","last_reissued_at":"2026-07-05T05:39:25.690490Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T05:39:25.690490Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2211.10544","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":"2026-07-05T05:39:25Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"6mwWaJrVntrabQtVRvmSHbjd1UpjaFJMrgx0Plq/ixRQ7ivdhdwQhAZNUraSH94MCCLlvjh4L+tMI+gV0Ak/BQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-11T12:01:31.271407Z"},"content_sha256":"cd92767d9f45e2c850cbd87de4a6a7ac1cc7486a00c882ec465e0fc5c3ed6398","schema_version":"1.0","event_id":"sha256:cd92767d9f45e2c850cbd87de4a6a7ac1cc7486a00c882ec465e0fc5c3ed6398"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2022:MKN2SURTITITBQJHVIDC4QBLRS","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"The luminous type Ia supernova 2022ilv and its early excess emission","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":["astro-ph.SR"],"primary_cat":"astro-ph.HE","authors_text":"D. R. Young, F. P. Callan, G. Dimitriadis, Hua Gao, James H. Gillanders, J. P. Anderson, K. C. Chambers, K. Maguire, K. W. Smith, Luke J. Shingles, M. E. Huber, Michael D. Fulton, M. Nicholl, S. A. Sim, Shubham Srivastav, S. J. Smartt, Thomas de Boer, Thomas Moore, Ting-Wan Chen","submitted_at":"2022-11-19T00:17:44Z","abstract_excerpt":"We present observations and analysis of the host-less and luminous type Ia supernova 2022ilv, illustrating it is part of the 2003fg-like family, often referred to as super-Chandrasekhar (Ia-SC) explosions. The ATLAS light curve shows evidence of a short-lived, pulse-like early excess, similar to that detected in another luminous type Ia supernova (SN 2020hvf). The light curve is broad and the early spectra are remarkably similar to SN 2009dc. Adopting a redshift of $z=0.026 \\pm 0.005$ for SN 2022ilv based on spectral matching, our model light curve requires a large $^{56}$Ni mass in the range "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2211.10544","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/2211.10544/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":"2026-07-05T05:39:25Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"2tsgMD/FGQvkJxJtvVcAHq1psafcEoF13BuHDDZXeLcyT9cWFw1ZEHqxe75uYBSEclG3+KQ4Rq1R5ffhg2R+Bw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-11T12:01:31.272304Z"},"content_sha256":"7d5f20ec52f7fec06a6d30b0fae83e8e2cabc75d06aba086f353ea0763dbc709","schema_version":"1.0","event_id":"sha256:7d5f20ec52f7fec06a6d30b0fae83e8e2cabc75d06aba086f353ea0763dbc709"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/MKN2SURTITITBQJHVIDC4QBLRS/bundle.json","state_url":"https://pith.science/pith/MKN2SURTITITBQJHVIDC4QBLRS/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/MKN2SURTITITBQJHVIDC4QBLRS/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":"2026-08-11T12:01:31Z","links":{"resolver":"https://pith.science/pith/MKN2SURTITITBQJHVIDC4QBLRS","bundle":"https://pith.science/pith/MKN2SURTITITBQJHVIDC4QBLRS/bundle.json","state":"https://pith.science/pith/MKN2SURTITITBQJHVIDC4QBLRS/state.json","well_known_bundle":"https://pith.science/.well-known/pith/MKN2SURTITITBQJHVIDC4QBLRS/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2022:MKN2SURTITITBQJHVIDC4QBLRS","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":"9804bc22ea297faca90823b1826edd496f8d9942dd79a4ddc592437a2ea85060","cross_cats_sorted":["astro-ph.SR"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.HE","submitted_at":"2022-11-19T00:17:44Z","title_canon_sha256":"8c4287de974d7f0830eddf03179ee727460a3a86a8c8c65da574cffb3df0b407"},"schema_version":"1.0","source":{"id":"2211.10544","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2211.10544","created_at":"2026-07-05T05:39:25Z"},{"alias_kind":"arxiv_version","alias_value":"2211.10544v2","created_at":"2026-07-05T05:39:25Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2211.10544","created_at":"2026-07-05T05:39:25Z"},{"alias_kind":"pith_short_12","alias_value":"MKN2SURTITIT","created_at":"2026-07-05T05:39:25Z"},{"alias_kind":"pith_short_16","alias_value":"MKN2SURTITITBQJH","created_at":"2026-07-05T05:39:25Z"},{"alias_kind":"pith_short_8","alias_value":"MKN2SURT","created_at":"2026-07-05T05:39:25Z"}],"graph_snapshots":[{"event_id":"sha256:7d5f20ec52f7fec06a6d30b0fae83e8e2cabc75d06aba086f353ea0763dbc709","target":"graph","created_at":"2026-07-05T05:39:25Z","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/2211.10544/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We present observations and analysis of the host-less and luminous type Ia supernova 2022ilv, illustrating it is part of the 2003fg-like family, often referred to as super-Chandrasekhar (Ia-SC) explosions. The ATLAS light curve shows evidence of a short-lived, pulse-like early excess, similar to that detected in another luminous type Ia supernova (SN 2020hvf). The light curve is broad and the early spectra are remarkably similar to SN 2009dc. Adopting a redshift of $z=0.026 \\pm 0.005$ for SN 2022ilv based on spectral matching, our model light curve requires a large $^{56}$Ni mass in the range ","authors_text":"D. R. Young, F. P. Callan, G. Dimitriadis, Hua Gao, James H. Gillanders, J. P. Anderson, K. C. Chambers, K. Maguire, K. W. Smith, Luke J. Shingles, M. E. Huber, Michael D. Fulton, M. Nicholl, S. A. Sim, Shubham Srivastav, S. J. Smartt, Thomas de Boer, Thomas Moore, Ting-Wan Chen","cross_cats":["astro-ph.SR"],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.HE","submitted_at":"2022-11-19T00:17:44Z","title":"The luminous type Ia supernova 2022ilv and its early excess emission"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2211.10544","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:cd92767d9f45e2c850cbd87de4a6a7ac1cc7486a00c882ec465e0fc5c3ed6398","target":"record","created_at":"2026-07-05T05:39:25Z","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":"9804bc22ea297faca90823b1826edd496f8d9942dd79a4ddc592437a2ea85060","cross_cats_sorted":["astro-ph.SR"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.HE","submitted_at":"2022-11-19T00:17:44Z","title_canon_sha256":"8c4287de974d7f0830eddf03179ee727460a3a86a8c8c65da574cffb3df0b407"},"schema_version":"1.0","source":{"id":"2211.10544","kind":"arxiv","version":2}},"canonical_sha256":"629ba9523344d130c127aa062e402b8cba0853802e859333dcee511fc5c1598c","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"629ba9523344d130c127aa062e402b8cba0853802e859333dcee511fc5c1598c","first_computed_at":"2026-07-05T05:39:25.690490Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T05:39:25.690490Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"AgWtwzxUHIWwx5RiDhXxUl9oAvNu/GbuS6k4J5MH2iFg4aBz2+zSIF8T9smvHHcH339HWr8y+SosgePtsZK5Cw==","signature_status":"signed_v1","signed_at":"2026-07-05T05:39:25.691020Z","signed_message":"canonical_sha256_bytes"},"source_id":"2211.10544","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:cd92767d9f45e2c850cbd87de4a6a7ac1cc7486a00c882ec465e0fc5c3ed6398","sha256:7d5f20ec52f7fec06a6d30b0fae83e8e2cabc75d06aba086f353ea0763dbc709"],"state_sha256":"0f66ac303ef64301e0b0cea4c528321e88817b1663607d2d1fbd1c9ef8c1d6af"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"VtzHqvUtI37UtFEsSSosOD92IJyFSGT0bgsd9hv1p7uIsPf9ZwqxmtTteWzYY0LueGdE59kSEXww3yrFx0x7CQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-11T12:01:31.279164Z","bundle_sha256":"cca7b0dd4f149b3c7e04e4c20df168bc0a39cdec3a63076393e3c5888ce5aaeb"}}