{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2011:R2NHGPIM5LYNIXFLZB24HGCRG2","short_pith_number":"pith:R2NHGPIM","canonical_record":{"source":{"id":"1102.4342","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2011-02-21T21:05:45Z","cross_cats_sorted":["astro-ph.CO","astro-ph.SR"],"title_canon_sha256":"88c5e3da6545b509e1693e25578e4dd3ff675eeb85305066d9ad85aa33da41e1","abstract_canon_sha256":"1f434b65e6b775f96ca5fb1df8ee20afb1c3b7f752c8f2df0257d35b727a2f1f"},"schema_version":"1.0"},"canonical_sha256":"8e9a733d0ceaf0d45cabc875c3985136acb8e5448d401598ddd9e01c3a7b9478","source":{"kind":"arxiv","id":"1102.4342","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1102.4342","created_at":"2026-05-18T02:03:06Z"},{"alias_kind":"arxiv_version","alias_value":"1102.4342v1","created_at":"2026-05-18T02:03:06Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1102.4342","created_at":"2026-05-18T02:03:06Z"},{"alias_kind":"pith_short_12","alias_value":"R2NHGPIM5LYN","created_at":"2026-05-18T12:26:39Z"},{"alias_kind":"pith_short_16","alias_value":"R2NHGPIM5LYNIXFL","created_at":"2026-05-18T12:26:39Z"},{"alias_kind":"pith_short_8","alias_value":"R2NHGPIM","created_at":"2026-05-18T12:26:39Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2011:R2NHGPIM5LYNIXFLZB24HGCRG2","target":"record","payload":{"canonical_record":{"source":{"id":"1102.4342","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2011-02-21T21:05:45Z","cross_cats_sorted":["astro-ph.CO","astro-ph.SR"],"title_canon_sha256":"88c5e3da6545b509e1693e25578e4dd3ff675eeb85305066d9ad85aa33da41e1","abstract_canon_sha256":"1f434b65e6b775f96ca5fb1df8ee20afb1c3b7f752c8f2df0257d35b727a2f1f"},"schema_version":"1.0"},"canonical_sha256":"8e9a733d0ceaf0d45cabc875c3985136acb8e5448d401598ddd9e01c3a7b9478","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:03:06.802576Z","signature_b64":"5CmqHExHza144pzYJbpr0sD1gb0wln1O9tvx8oogfzKDpSml+9I7iYmDSYLkC4S2QzqzxTY4/q2Y/8hVtiCPCQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"8e9a733d0ceaf0d45cabc875c3985136acb8e5448d401598ddd9e01c3a7b9478","last_reissued_at":"2026-05-18T02:03:06.802144Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:03:06.802144Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1102.4342","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":"2026-05-18T02:03:06Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"DjmLUe0L+yuSCOmRI/bapgbceOice8ALiHTkCb1ABrt3CRKA2AnDfKPLz/gxWbAnY+zIJupijssmOYOrFPBbDQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-04T19:21:30.915271Z"},"content_sha256":"01ebc53cce08c53a4b44b99de1f63816069aea3c0e3f8145cde50f877fdb9ac1","schema_version":"1.0","event_id":"sha256:01ebc53cce08c53a4b44b99de1f63816069aea3c0e3f8145cde50f877fdb9ac1"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2011:R2NHGPIM5LYNIXFLZB24HGCRG2","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Spin-Up/Spin-Down models for Type Ia Supernovae","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.CO","astro-ph.SR"],"primary_cat":"astro-ph.HE","authors_text":"J.S.W. Claeys, R. Di Stefano, R. Voss","submitted_at":"2011-02-21T21:05:45Z","abstract_excerpt":"In the single degenerate scenario for Type Ia supernova (SNeIa), a white dwarf (WD) must gain a significant amount of matter from a companion star. Because the accreted mass carries angular momentum, the WD is likely to achieve fast spin periods, which can increase the critical mass, $M_{crit}$, needed for explosion. When $M_{crit}$ is higher than the maximum mass achieved by the WD, the WD must spin down before it can explode. This introduces a delay between the time at which the WD has completed its epoch of mass gain and the time of the explosion. Matter ejected from the binary during mass "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1102.4342","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":"2026-05-18T02:03:06Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Ig7Aun9i9MI3jeV69trbAQwE99zeC60KgGVQw2cRjXvcuBqNUZ/aU0AlU343A7P4iKcTAPh7z5sT/CrTKnwKBQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-04T19:21:30.915664Z"},"content_sha256":"65509b42578138f52796cfb961904df24f3e4ca9b720da51b151d2c962a10b3a","schema_version":"1.0","event_id":"sha256:65509b42578138f52796cfb961904df24f3e4ca9b720da51b151d2c962a10b3a"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/R2NHGPIM5LYNIXFLZB24HGCRG2/bundle.json","state_url":"https://pith.science/pith/R2NHGPIM5LYNIXFLZB24HGCRG2/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/R2NHGPIM5LYNIXFLZB24HGCRG2/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":"2026-06-04T19:21:30Z","links":{"resolver":"https://pith.science/pith/R2NHGPIM5LYNIXFLZB24HGCRG2","bundle":"https://pith.science/pith/R2NHGPIM5LYNIXFLZB24HGCRG2/bundle.json","state":"https://pith.science/pith/R2NHGPIM5LYNIXFLZB24HGCRG2/state.json","well_known_bundle":"https://pith.science/.well-known/pith/R2NHGPIM5LYNIXFLZB24HGCRG2/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2011:R2NHGPIM5LYNIXFLZB24HGCRG2","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":"1f434b65e6b775f96ca5fb1df8ee20afb1c3b7f752c8f2df0257d35b727a2f1f","cross_cats_sorted":["astro-ph.CO","astro-ph.SR"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2011-02-21T21:05:45Z","title_canon_sha256":"88c5e3da6545b509e1693e25578e4dd3ff675eeb85305066d9ad85aa33da41e1"},"schema_version":"1.0","source":{"id":"1102.4342","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1102.4342","created_at":"2026-05-18T02:03:06Z"},{"alias_kind":"arxiv_version","alias_value":"1102.4342v1","created_at":"2026-05-18T02:03:06Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1102.4342","created_at":"2026-05-18T02:03:06Z"},{"alias_kind":"pith_short_12","alias_value":"R2NHGPIM5LYN","created_at":"2026-05-18T12:26:39Z"},{"alias_kind":"pith_short_16","alias_value":"R2NHGPIM5LYNIXFL","created_at":"2026-05-18T12:26:39Z"},{"alias_kind":"pith_short_8","alias_value":"R2NHGPIM","created_at":"2026-05-18T12:26:39Z"}],"graph_snapshots":[{"event_id":"sha256:65509b42578138f52796cfb961904df24f3e4ca9b720da51b151d2c962a10b3a","target":"graph","created_at":"2026-05-18T02:03:06Z","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":"In the single degenerate scenario for Type Ia supernova (SNeIa), a white dwarf (WD) must gain a significant amount of matter from a companion star. Because the accreted mass carries angular momentum, the WD is likely to achieve fast spin periods, which can increase the critical mass, $M_{crit}$, needed for explosion. When $M_{crit}$ is higher than the maximum mass achieved by the WD, the WD must spin down before it can explode. This introduces a delay between the time at which the WD has completed its epoch of mass gain and the time of the explosion. Matter ejected from the binary during mass ","authors_text":"J.S.W. Claeys, R. Di Stefano, R. Voss","cross_cats":["astro-ph.CO","astro-ph.SR"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2011-02-21T21:05:45Z","title":"Spin-Up/Spin-Down models for Type Ia Supernovae"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1102.4342","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":"sha256:01ebc53cce08c53a4b44b99de1f63816069aea3c0e3f8145cde50f877fdb9ac1","target":"record","created_at":"2026-05-18T02:03:06Z","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":"1f434b65e6b775f96ca5fb1df8ee20afb1c3b7f752c8f2df0257d35b727a2f1f","cross_cats_sorted":["astro-ph.CO","astro-ph.SR"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2011-02-21T21:05:45Z","title_canon_sha256":"88c5e3da6545b509e1693e25578e4dd3ff675eeb85305066d9ad85aa33da41e1"},"schema_version":"1.0","source":{"id":"1102.4342","kind":"arxiv","version":1}},"canonical_sha256":"8e9a733d0ceaf0d45cabc875c3985136acb8e5448d401598ddd9e01c3a7b9478","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"8e9a733d0ceaf0d45cabc875c3985136acb8e5448d401598ddd9e01c3a7b9478","first_computed_at":"2026-05-18T02:03:06.802144Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:03:06.802144Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"5CmqHExHza144pzYJbpr0sD1gb0wln1O9tvx8oogfzKDpSml+9I7iYmDSYLkC4S2QzqzxTY4/q2Y/8hVtiCPCQ==","signature_status":"signed_v1","signed_at":"2026-05-18T02:03:06.802576Z","signed_message":"canonical_sha256_bytes"},"source_id":"1102.4342","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:01ebc53cce08c53a4b44b99de1f63816069aea3c0e3f8145cde50f877fdb9ac1","sha256:65509b42578138f52796cfb961904df24f3e4ca9b720da51b151d2c962a10b3a"],"state_sha256":"f267b0fbacdde5e230bd40e2f69537e199ccb579367eb25659b6753a3aea8a8f"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"vUi26/7zUgh7aEw2TCuDI0oOyrjtcqarJSQTA81W+DZjbGu2q5cDdTRQ6Fb/hU7oWeP0cCsUseiWNrgtOhXOAA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-04T19:21:30.917651Z","bundle_sha256":"7edf3609c3a8ef4008d2bf78b858d30f24ae333d5be3b62499651ebbb6224cee"}}