{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2012:B6KNEASTQXCSVLBBP6ODTMXAIU","short_pith_number":"pith:B6KNEAST","canonical_record":{"source":{"id":"1207.4648","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2012-07-19T13:01:50Z","cross_cats_sorted":["astro-ph.SR"],"title_canon_sha256":"5da08fcae33d91b0fcc7dab39f85ceb2e7e645836b8a649c5f168247a5c3bff0","abstract_canon_sha256":"f223e6d87c0543e6d3cb5b3008b40adb408e76713d8e0bb2af1b03d8ab98fe5e"},"schema_version":"1.0"},"canonical_sha256":"0f94d2025385c52aac217f9c39b2e04505d2f034290d2d8d57702d4db63d3140","source":{"kind":"arxiv","id":"1207.4648","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1207.4648","created_at":"2026-05-18T03:46:47Z"},{"alias_kind":"arxiv_version","alias_value":"1207.4648v1","created_at":"2026-05-18T03:46:47Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1207.4648","created_at":"2026-05-18T03:46:47Z"},{"alias_kind":"pith_short_12","alias_value":"B6KNEASTQXCS","created_at":"2026-05-18T12:26:58Z"},{"alias_kind":"pith_short_16","alias_value":"B6KNEASTQXCSVLBB","created_at":"2026-05-18T12:26:58Z"},{"alias_kind":"pith_short_8","alias_value":"B6KNEAST","created_at":"2026-05-18T12:26:58Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2012:B6KNEASTQXCSVLBBP6ODTMXAIU","target":"record","payload":{"canonical_record":{"source":{"id":"1207.4648","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2012-07-19T13:01:50Z","cross_cats_sorted":["astro-ph.SR"],"title_canon_sha256":"5da08fcae33d91b0fcc7dab39f85ceb2e7e645836b8a649c5f168247a5c3bff0","abstract_canon_sha256":"f223e6d87c0543e6d3cb5b3008b40adb408e76713d8e0bb2af1b03d8ab98fe5e"},"schema_version":"1.0"},"canonical_sha256":"0f94d2025385c52aac217f9c39b2e04505d2f034290d2d8d57702d4db63d3140","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T03:46:47.018137Z","signature_b64":"r/LKmF8ovgpEJJpXK+YLgbhS4zr96R0XTgakySvOs0kxkXtx2dUFkn5Gtv8AgjXbiq9M8zNKkWLEJ8F4aTqqCg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"0f94d2025385c52aac217f9c39b2e04505d2f034290d2d8d57702d4db63d3140","last_reissued_at":"2026-05-18T03:46:47.017380Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T03:46:47.017380Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1207.4648","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":"2026-05-18T03:46:47Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"+5Xybb4Ej6JxpxJLJB4WzkX7ib4JshK9HcGg99cth+7t52ZaYY1/Aye9NOLJSPycaBzGkTt6xsIrhfoOIQUZAw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-04T18:59:18.592964Z"},"content_sha256":"0ac1fe956c74a5bbcb0141078c1c0e02ebdac7598e7c5f0523138307f048d1d5","schema_version":"1.0","event_id":"sha256:0ac1fe956c74a5bbcb0141078c1c0e02ebdac7598e7c5f0523138307f048d1d5"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2012:B6KNEASTQXCSVLBBP6ODTMXAIU","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Super-Chandrasekhar-Mass Light Curve Models for the Highly Luminous Type Ia Supernova 2009dc","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.SR"],"primary_cat":"astro-ph.HE","authors_text":"Elena I. Sorokina, Ken'ichi Nomoto, Masaomi Tanaka, Sergei I. Blinnikov, Tomoharu Suzuki, Yasuomi Kamiya","submitted_at":"2012-07-19T13:01:50Z","abstract_excerpt":"Several highly luminous Type Ia supernovae (SNe Ia) have been discovered. Their high luminosities are difficult to explain with the thermonuclear explosions of the Chandrasekhar-mass white dwarfs (WDs). In the present study, we estimate the progenitor mass of SN 2009dc, one of the extremely luminous SNe Ia, using the hydrodynamical models as follows. Explosion models of super-Chandrasekhar-mass (super-Ch-mass) WDs are constructed, and multi-color light curves (LCs) are calculated. The comparison between our calculations and the observations of SN 2009dc suggests that the exploding WD has a sup"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1207.4648","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":""},"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":"2026-05-18T03:46:47Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"x88uIXm0Dbm0548C6e35OVkVOAaqmrrUjsX7W0x+NxJnmYtYFdUf6xWY3MAJoFHKAp1sY8juCxCngdbq4jlhDg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-04T18:59:18.593324Z"},"content_sha256":"b39739142e43076d5cb923d81770574b2352058d1444ee5c78ddb22db2628ebb","schema_version":"1.0","event_id":"sha256:b39739142e43076d5cb923d81770574b2352058d1444ee5c78ddb22db2628ebb"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/B6KNEASTQXCSVLBBP6ODTMXAIU/bundle.json","state_url":"https://pith.science/pith/B6KNEASTQXCSVLBBP6ODTMXAIU/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/B6KNEASTQXCSVLBBP6ODTMXAIU/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":"2026-06-04T18:59:18Z","links":{"resolver":"https://pith.science/pith/B6KNEASTQXCSVLBBP6ODTMXAIU","bundle":"https://pith.science/pith/B6KNEASTQXCSVLBBP6ODTMXAIU/bundle.json","state":"https://pith.science/pith/B6KNEASTQXCSVLBBP6ODTMXAIU/state.json","well_known_bundle":"https://pith.science/.well-known/pith/B6KNEASTQXCSVLBBP6ODTMXAIU/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2012:B6KNEASTQXCSVLBBP6ODTMXAIU","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":"f223e6d87c0543e6d3cb5b3008b40adb408e76713d8e0bb2af1b03d8ab98fe5e","cross_cats_sorted":["astro-ph.SR"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2012-07-19T13:01:50Z","title_canon_sha256":"5da08fcae33d91b0fcc7dab39f85ceb2e7e645836b8a649c5f168247a5c3bff0"},"schema_version":"1.0","source":{"id":"1207.4648","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1207.4648","created_at":"2026-05-18T03:46:47Z"},{"alias_kind":"arxiv_version","alias_value":"1207.4648v1","created_at":"2026-05-18T03:46:47Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1207.4648","created_at":"2026-05-18T03:46:47Z"},{"alias_kind":"pith_short_12","alias_value":"B6KNEASTQXCS","created_at":"2026-05-18T12:26:58Z"},{"alias_kind":"pith_short_16","alias_value":"B6KNEASTQXCSVLBB","created_at":"2026-05-18T12:26:58Z"},{"alias_kind":"pith_short_8","alias_value":"B6KNEAST","created_at":"2026-05-18T12:26:58Z"}],"graph_snapshots":[{"event_id":"sha256:b39739142e43076d5cb923d81770574b2352058d1444ee5c78ddb22db2628ebb","target":"graph","created_at":"2026-05-18T03:46:47Z","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"},"paper":{"abstract_excerpt":"Several highly luminous Type Ia supernovae (SNe Ia) have been discovered. Their high luminosities are difficult to explain with the thermonuclear explosions of the Chandrasekhar-mass white dwarfs (WDs). In the present study, we estimate the progenitor mass of SN 2009dc, one of the extremely luminous SNe Ia, using the hydrodynamical models as follows. Explosion models of super-Chandrasekhar-mass (super-Ch-mass) WDs are constructed, and multi-color light curves (LCs) are calculated. The comparison between our calculations and the observations of SN 2009dc suggests that the exploding WD has a sup","authors_text":"Elena I. Sorokina, Ken'ichi Nomoto, Masaomi Tanaka, Sergei I. Blinnikov, Tomoharu Suzuki, Yasuomi Kamiya","cross_cats":["astro-ph.SR"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2012-07-19T13:01:50Z","title":"Super-Chandrasekhar-Mass Light Curve Models for the Highly Luminous Type Ia Supernova 2009dc"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1207.4648","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":"sha256:0ac1fe956c74a5bbcb0141078c1c0e02ebdac7598e7c5f0523138307f048d1d5","target":"record","created_at":"2026-05-18T03:46:47Z","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":"f223e6d87c0543e6d3cb5b3008b40adb408e76713d8e0bb2af1b03d8ab98fe5e","cross_cats_sorted":["astro-ph.SR"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2012-07-19T13:01:50Z","title_canon_sha256":"5da08fcae33d91b0fcc7dab39f85ceb2e7e645836b8a649c5f168247a5c3bff0"},"schema_version":"1.0","source":{"id":"1207.4648","kind":"arxiv","version":1}},"canonical_sha256":"0f94d2025385c52aac217f9c39b2e04505d2f034290d2d8d57702d4db63d3140","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"0f94d2025385c52aac217f9c39b2e04505d2f034290d2d8d57702d4db63d3140","first_computed_at":"2026-05-18T03:46:47.017380Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T03:46:47.017380Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"r/LKmF8ovgpEJJpXK+YLgbhS4zr96R0XTgakySvOs0kxkXtx2dUFkn5Gtv8AgjXbiq9M8zNKkWLEJ8F4aTqqCg==","signature_status":"signed_v1","signed_at":"2026-05-18T03:46:47.018137Z","signed_message":"canonical_sha256_bytes"},"source_id":"1207.4648","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:0ac1fe956c74a5bbcb0141078c1c0e02ebdac7598e7c5f0523138307f048d1d5","sha256:b39739142e43076d5cb923d81770574b2352058d1444ee5c78ddb22db2628ebb"],"state_sha256":"7231141af14f4653cc8d88f1c1cb40a10b78ecb20d1e651f1d39e1999987d653"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"CIGUhmsyAAyROlMzFgsxzUrf73VFXKEnYnN+Nm3ZNs4saiL7oLNOPwRz4qc7mUUd+dAxIBHLXfhaPanJYDNfAQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-04T18:59:18.595308Z","bundle_sha256":"137f98134751d32d06515df6edcf11ae221fcfac0587145dc6f40dbb10dd8dce"}}