{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2013:AJCT257AGJJVLPLOYEOHT35J24","short_pith_number":"pith:AJCT257A","canonical_record":{"source":{"id":"1304.4942","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2013-04-17T20:00:18Z","cross_cats_sorted":["astro-ph.CO","astro-ph.HE"],"title_canon_sha256":"3f43a138be83281d7c3addeac0b3710c6b23047cf379084112f2004747e34ec2","abstract_canon_sha256":"7fe0032e6cf1cd220c21a33387af7a8ac17effb4de8b712204777181592b78ba"},"schema_version":"1.0"},"canonical_sha256":"02453d77e0325355bd6ec11c79efa9d71691f30420ce18d098797ba0da97e90c","source":{"kind":"arxiv","id":"1304.4942","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1304.4942","created_at":"2026-05-18T01:50:31Z"},{"alias_kind":"arxiv_version","alias_value":"1304.4942v2","created_at":"2026-05-18T01:50:31Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1304.4942","created_at":"2026-05-18T01:50:31Z"},{"alias_kind":"pith_short_12","alias_value":"AJCT257AGJJV","created_at":"2026-05-18T12:27:38Z"},{"alias_kind":"pith_short_16","alias_value":"AJCT257AGJJVLPLO","created_at":"2026-05-18T12:27:38Z"},{"alias_kind":"pith_short_8","alias_value":"AJCT257A","created_at":"2026-05-18T12:27:38Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2013:AJCT257AGJJVLPLOYEOHT35J24","target":"record","payload":{"canonical_record":{"source":{"id":"1304.4942","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2013-04-17T20:00:18Z","cross_cats_sorted":["astro-ph.CO","astro-ph.HE"],"title_canon_sha256":"3f43a138be83281d7c3addeac0b3710c6b23047cf379084112f2004747e34ec2","abstract_canon_sha256":"7fe0032e6cf1cd220c21a33387af7a8ac17effb4de8b712204777181592b78ba"},"schema_version":"1.0"},"canonical_sha256":"02453d77e0325355bd6ec11c79efa9d71691f30420ce18d098797ba0da97e90c","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:50:31.444252Z","signature_b64":"fMIzcnxT3igB0L7vDFNqgte5Xsu55HH5fwZpFtunD8LRLi2C+bD8RgYvMEDFqb6rtk3zsned8IS/XHiQa79JDA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"02453d77e0325355bd6ec11c79efa9d71691f30420ce18d098797ba0da97e90c","last_reissued_at":"2026-05-18T01:50:31.443674Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:50:31.443674Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1304.4942","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":"2026-05-18T01:50:31Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"U26GguooxD8lTXqL5n06WE/AwbQ8u1YNyEebwSYdcuZAux5lUHALDL3vyyl/D57sVsGPPU5FY5xV8rCrJbhEBQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-23T09:30:29.404827Z"},"content_sha256":"da0167273657eb303370e706aac2acc0fb9561c531fa519f2ffe124eef2f9e43","schema_version":"1.0","event_id":"sha256:da0167273657eb303370e706aac2acc0fb9561c531fa519f2ffe124eef2f9e43"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2013:AJCT257AGJJVLPLOYEOHT35J24","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"On Silicon Group Elements Ejected by Supernovae Type Ia","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.CO","astro-ph.HE"],"primary_cat":"astro-ph.SR","authors_text":"Alan C. Calder, David A. Chamulak, Dean M. Townsley, Dennis Jack, Edward F. Brown, F. X. Timmes, Soma De, Themis Athanassiadou, Wendy Hawley","submitted_at":"2013-04-17T20:00:18Z","abstract_excerpt":"There is compelling evidence that the peak brightness of a Type Ia supernova is affected by the electron fraction Ye at the time of the explosion. The electron fraction is set by the aboriginal composition of the white dwarf and the reactions that occur during the pre explosive convective burning. To date, determining the makeup of the white dwarf progenitor has relied on indirect proxies, such as the average metallicity of the host stellar population. In this paper, we present analytical calculations supporting the idea that the electron fraction of the progenitor systematically influences th"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1304.4942","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":""},"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":"2026-05-18T01:50:31Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"r8P46IdQ71chqzRnHOohNBu+bqDb1IWOQoKE8RNdgv/NkNneFQ/fgwBni2kyeVuxEXOQzmTGfo5Wf/EwTNQRDw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-23T09:30:29.405184Z"},"content_sha256":"1c9f0102377cd308780eb239637bd148b37544956baf75b8efdf18a2b2b591ee","schema_version":"1.0","event_id":"sha256:1c9f0102377cd308780eb239637bd148b37544956baf75b8efdf18a2b2b591ee"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/AJCT257AGJJVLPLOYEOHT35J24/bundle.json","state_url":"https://pith.science/pith/AJCT257AGJJVLPLOYEOHT35J24/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/AJCT257AGJJVLPLOYEOHT35J24/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":"2026-07-23T09:30:29Z","links":{"resolver":"https://pith.science/pith/AJCT257AGJJVLPLOYEOHT35J24","bundle":"https://pith.science/pith/AJCT257AGJJVLPLOYEOHT35J24/bundle.json","state":"https://pith.science/pith/AJCT257AGJJVLPLOYEOHT35J24/state.json","well_known_bundle":"https://pith.science/.well-known/pith/AJCT257AGJJVLPLOYEOHT35J24/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2013:AJCT257AGJJVLPLOYEOHT35J24","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":"7fe0032e6cf1cd220c21a33387af7a8ac17effb4de8b712204777181592b78ba","cross_cats_sorted":["astro-ph.CO","astro-ph.HE"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2013-04-17T20:00:18Z","title_canon_sha256":"3f43a138be83281d7c3addeac0b3710c6b23047cf379084112f2004747e34ec2"},"schema_version":"1.0","source":{"id":"1304.4942","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1304.4942","created_at":"2026-05-18T01:50:31Z"},{"alias_kind":"arxiv_version","alias_value":"1304.4942v2","created_at":"2026-05-18T01:50:31Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1304.4942","created_at":"2026-05-18T01:50:31Z"},{"alias_kind":"pith_short_12","alias_value":"AJCT257AGJJV","created_at":"2026-05-18T12:27:38Z"},{"alias_kind":"pith_short_16","alias_value":"AJCT257AGJJVLPLO","created_at":"2026-05-18T12:27:38Z"},{"alias_kind":"pith_short_8","alias_value":"AJCT257A","created_at":"2026-05-18T12:27:38Z"}],"graph_snapshots":[{"event_id":"sha256:1c9f0102377cd308780eb239637bd148b37544956baf75b8efdf18a2b2b591ee","target":"graph","created_at":"2026-05-18T01:50:31Z","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":"There is compelling evidence that the peak brightness of a Type Ia supernova is affected by the electron fraction Ye at the time of the explosion. The electron fraction is set by the aboriginal composition of the white dwarf and the reactions that occur during the pre explosive convective burning. To date, determining the makeup of the white dwarf progenitor has relied on indirect proxies, such as the average metallicity of the host stellar population. In this paper, we present analytical calculations supporting the idea that the electron fraction of the progenitor systematically influences th","authors_text":"Alan C. Calder, David A. Chamulak, Dean M. Townsley, Dennis Jack, Edward F. Brown, F. X. Timmes, Soma De, Themis Athanassiadou, Wendy Hawley","cross_cats":["astro-ph.CO","astro-ph.HE"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2013-04-17T20:00:18Z","title":"On Silicon Group Elements Ejected by Supernovae Type Ia"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1304.4942","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:da0167273657eb303370e706aac2acc0fb9561c531fa519f2ffe124eef2f9e43","target":"record","created_at":"2026-05-18T01:50:31Z","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":"7fe0032e6cf1cd220c21a33387af7a8ac17effb4de8b712204777181592b78ba","cross_cats_sorted":["astro-ph.CO","astro-ph.HE"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2013-04-17T20:00:18Z","title_canon_sha256":"3f43a138be83281d7c3addeac0b3710c6b23047cf379084112f2004747e34ec2"},"schema_version":"1.0","source":{"id":"1304.4942","kind":"arxiv","version":2}},"canonical_sha256":"02453d77e0325355bd6ec11c79efa9d71691f30420ce18d098797ba0da97e90c","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"02453d77e0325355bd6ec11c79efa9d71691f30420ce18d098797ba0da97e90c","first_computed_at":"2026-05-18T01:50:31.443674Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:50:31.443674Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"fMIzcnxT3igB0L7vDFNqgte5Xsu55HH5fwZpFtunD8LRLi2C+bD8RgYvMEDFqb6rtk3zsned8IS/XHiQa79JDA==","signature_status":"signed_v1","signed_at":"2026-05-18T01:50:31.444252Z","signed_message":"canonical_sha256_bytes"},"source_id":"1304.4942","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:da0167273657eb303370e706aac2acc0fb9561c531fa519f2ffe124eef2f9e43","sha256:1c9f0102377cd308780eb239637bd148b37544956baf75b8efdf18a2b2b591ee"],"state_sha256":"b2ae1180b323fcf043f0f8bd22221979bd252ab4569bf687e698d3e74dff288e"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"dx7bjR9U2cxnyyXLkX/6i+2YoFRn4GV3C0Nz9HJiLt099dkm1RNgo5aDhDloOKozYfNMM3QduEXbH5fX+kZyCQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-07-23T09:30:29.407653Z","bundle_sha256":"bcf77730b1b001a26efafb66cc37f35e74f3e2e2e1ea4c6c9cdffb754b373896"}}