{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2024:CHBJCYYU3NZOSI36R2NRTWOKQY","short_pith_number":"pith:CHBJCYYU","canonical_record":{"source":{"id":"2406.00928","kind":"arxiv","version":2},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.HE","submitted_at":"2024-06-03T01:55:46Z","cross_cats_sorted":["astro-ph.SR"],"title_canon_sha256":"4a63b4bef7b391a576432216534d9cb16dd69d33f88cbe0610649decbde913dc","abstract_canon_sha256":"cb7d6b0dc5775edb278fa7acf89e74a39d1f200631ba1d56dbc5df89453d4e27"},"schema_version":"1.0"},"canonical_sha256":"11c2916314db72e9237e8e9b19d9ca8600fb34a85f3050b91524ce757cd04f9b","source":{"kind":"arxiv","id":"2406.00928","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2406.00928","created_at":"2026-07-05T10:01:33Z"},{"alias_kind":"arxiv_version","alias_value":"2406.00928v2","created_at":"2026-07-05T10:01:33Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2406.00928","created_at":"2026-07-05T10:01:33Z"},{"alias_kind":"pith_short_12","alias_value":"CHBJCYYU3NZO","created_at":"2026-07-05T10:01:33Z"},{"alias_kind":"pith_short_16","alias_value":"CHBJCYYU3NZOSI36","created_at":"2026-07-05T10:01:33Z"},{"alias_kind":"pith_short_8","alias_value":"CHBJCYYU","created_at":"2026-07-05T10:01:33Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2024:CHBJCYYU3NZOSI36R2NRTWOKQY","target":"record","payload":{"canonical_record":{"source":{"id":"2406.00928","kind":"arxiv","version":2},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.HE","submitted_at":"2024-06-03T01:55:46Z","cross_cats_sorted":["astro-ph.SR"],"title_canon_sha256":"4a63b4bef7b391a576432216534d9cb16dd69d33f88cbe0610649decbde913dc","abstract_canon_sha256":"cb7d6b0dc5775edb278fa7acf89e74a39d1f200631ba1d56dbc5df89453d4e27"},"schema_version":"1.0"},"canonical_sha256":"11c2916314db72e9237e8e9b19d9ca8600fb34a85f3050b91524ce757cd04f9b","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T10:01:33.736631Z","signature_b64":"NxQwxFZ9GWljT2m9MH1L9wyJLDjxzlAVJt3rmgbvD102vz1CE7iMpBl1l8vlzHVRYFtWO8dILDI0GFw9h4rUCQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"11c2916314db72e9237e8e9b19d9ca8600fb34a85f3050b91524ce757cd04f9b","last_reissued_at":"2026-07-05T10:01:33.736106Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T10:01:33.736106Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2406.00928","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":"2026-07-05T10:01:33Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Iz5mi4JNMTCYIDM5ZIr86IDHncmQaykl6hJSDhqMllF1sW6lv8KE9IW53ogmaKzmxPk5agpd8D/NLRkzU6VUBQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-02T16:01:55.977196Z"},"content_sha256":"30c9a2b1e2a2f361dbbfc255bd67920fba0ef6191f7c6bb02ffe3721092fa5b2","schema_version":"1.0","event_id":"sha256:30c9a2b1e2a2f361dbbfc255bd67920fba0ef6191f7c6bb02ffe3721092fa5b2"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2024:CHBJCYYU3NZOSI36R2NRTWOKQY","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Progenitor and explosion properties of SN 2023ixf estimated based on a light-curve model grid of Type II supernovae","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":["astro-ph.SR"],"primary_cat":"astro-ph.HE","authors_text":"Avinash Singh, Takashi J. Moriya","submitted_at":"2024-06-03T01:55:46Z","abstract_excerpt":"We estimate the progenitor and explosion properties of the nearby Type II SN 2023ixf using a synthetic model grid of Type II supernova light curves. By comparing the light curves of SN 2023ixf with the pre-existing grid of Type II supernovae containing about 228,000 models with different combinations of the progenitor and explosion properties, we obtain the chi2 value for every model and evaluate the properties of the models providing small values of chi2. We found that the light-curve models with the progenitor zero-age main-sequence mass of 10 Msun, the explosion energy of (2-3)e51 erg, the "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2406.00928","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/2406.00928/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":"2026-07-05T10:01:33Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"nhRgZWzqsYuxHcw+VqmvZ8COdItLs7yhNLxGirAv+5WQFr4YgcudZ6rcZDLiH+S7K0qpFakwsJh8y+//FIvzAA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-02T16:01:55.978281Z"},"content_sha256":"110818130333fbd1a012c5ed5158e7af36d186193108b7a2df259ebbba021285","schema_version":"1.0","event_id":"sha256:110818130333fbd1a012c5ed5158e7af36d186193108b7a2df259ebbba021285"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/CHBJCYYU3NZOSI36R2NRTWOKQY/bundle.json","state_url":"https://pith.science/pith/CHBJCYYU3NZOSI36R2NRTWOKQY/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/CHBJCYYU3NZOSI36R2NRTWOKQY/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":"2026-08-02T16:01:55Z","links":{"resolver":"https://pith.science/pith/CHBJCYYU3NZOSI36R2NRTWOKQY","bundle":"https://pith.science/pith/CHBJCYYU3NZOSI36R2NRTWOKQY/bundle.json","state":"https://pith.science/pith/CHBJCYYU3NZOSI36R2NRTWOKQY/state.json","well_known_bundle":"https://pith.science/.well-known/pith/CHBJCYYU3NZOSI36R2NRTWOKQY/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2024:CHBJCYYU3NZOSI36R2NRTWOKQY","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":"cb7d6b0dc5775edb278fa7acf89e74a39d1f200631ba1d56dbc5df89453d4e27","cross_cats_sorted":["astro-ph.SR"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.HE","submitted_at":"2024-06-03T01:55:46Z","title_canon_sha256":"4a63b4bef7b391a576432216534d9cb16dd69d33f88cbe0610649decbde913dc"},"schema_version":"1.0","source":{"id":"2406.00928","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2406.00928","created_at":"2026-07-05T10:01:33Z"},{"alias_kind":"arxiv_version","alias_value":"2406.00928v2","created_at":"2026-07-05T10:01:33Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2406.00928","created_at":"2026-07-05T10:01:33Z"},{"alias_kind":"pith_short_12","alias_value":"CHBJCYYU3NZO","created_at":"2026-07-05T10:01:33Z"},{"alias_kind":"pith_short_16","alias_value":"CHBJCYYU3NZOSI36","created_at":"2026-07-05T10:01:33Z"},{"alias_kind":"pith_short_8","alias_value":"CHBJCYYU","created_at":"2026-07-05T10:01:33Z"}],"graph_snapshots":[{"event_id":"sha256:110818130333fbd1a012c5ed5158e7af36d186193108b7a2df259ebbba021285","target":"graph","created_at":"2026-07-05T10:01:33Z","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/2406.00928/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We estimate the progenitor and explosion properties of the nearby Type II SN 2023ixf using a synthetic model grid of Type II supernova light curves. By comparing the light curves of SN 2023ixf with the pre-existing grid of Type II supernovae containing about 228,000 models with different combinations of the progenitor and explosion properties, we obtain the chi2 value for every model and evaluate the properties of the models providing small values of chi2. We found that the light-curve models with the progenitor zero-age main-sequence mass of 10 Msun, the explosion energy of (2-3)e51 erg, the ","authors_text":"Avinash Singh, Takashi J. Moriya","cross_cats":["astro-ph.SR"],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.HE","submitted_at":"2024-06-03T01:55:46Z","title":"Progenitor and explosion properties of SN 2023ixf estimated based on a light-curve model grid of Type II supernovae"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2406.00928","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":"sha256:30c9a2b1e2a2f361dbbfc255bd67920fba0ef6191f7c6bb02ffe3721092fa5b2","target":"record","created_at":"2026-07-05T10:01:33Z","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":"cb7d6b0dc5775edb278fa7acf89e74a39d1f200631ba1d56dbc5df89453d4e27","cross_cats_sorted":["astro-ph.SR"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.HE","submitted_at":"2024-06-03T01:55:46Z","title_canon_sha256":"4a63b4bef7b391a576432216534d9cb16dd69d33f88cbe0610649decbde913dc"},"schema_version":"1.0","source":{"id":"2406.00928","kind":"arxiv","version":2}},"canonical_sha256":"11c2916314db72e9237e8e9b19d9ca8600fb34a85f3050b91524ce757cd04f9b","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"11c2916314db72e9237e8e9b19d9ca8600fb34a85f3050b91524ce757cd04f9b","first_computed_at":"2026-07-05T10:01:33.736106Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T10:01:33.736106Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"NxQwxFZ9GWljT2m9MH1L9wyJLDjxzlAVJt3rmgbvD102vz1CE7iMpBl1l8vlzHVRYFtWO8dILDI0GFw9h4rUCQ==","signature_status":"signed_v1","signed_at":"2026-07-05T10:01:33.736631Z","signed_message":"canonical_sha256_bytes"},"source_id":"2406.00928","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:30c9a2b1e2a2f361dbbfc255bd67920fba0ef6191f7c6bb02ffe3721092fa5b2","sha256:110818130333fbd1a012c5ed5158e7af36d186193108b7a2df259ebbba021285"],"state_sha256":"65c7dd1caa6677c8c47081da76ee2eb7f486a04bb0667a8aa5ef8ca675775c55"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"5x3Pl2GqMjKQU8K835OpyW+sVN0z15jVDEt6GD1ekF07fcNRBTZrYliqLO2pVEcsWPpAlO7IhLWtahSIGwnQAQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-02T16:01:55.985291Z","bundle_sha256":"6aacca94ef5cb0df05d92d6507f0eda6f86c6de4f760a58ea1f615210f060b1e"}}