{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:DRKUEL6KPUF4N6KBHQNYM4MHGA","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":"76beae24d1aa18877c4fee9019a32956aa3e79bf98fd349647537a6fc13b7075","cross_cats_sorted":["astro-ph.SR"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2018-05-09T14:39:47Z","title_canon_sha256":"02e3ca188bc7cd79e99127b11c79f4c6397d0779ef11de970bec2ba0366d348f"},"schema_version":"1.0","source":{"id":"1805.03556","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1805.03556","created_at":"2026-05-18T00:09:59Z"},{"alias_kind":"arxiv_version","alias_value":"1805.03556v2","created_at":"2026-05-18T00:09:59Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1805.03556","created_at":"2026-05-18T00:09:59Z"},{"alias_kind":"pith_short_12","alias_value":"DRKUEL6KPUF4","created_at":"2026-05-18T12:32:19Z"},{"alias_kind":"pith_short_16","alias_value":"DRKUEL6KPUF4N6KB","created_at":"2026-05-18T12:32:19Z"},{"alias_kind":"pith_short_8","alias_value":"DRKUEL6K","created_at":"2026-05-18T12:32:19Z"}],"graph_snapshots":[{"event_id":"sha256:fca55417657eccf34b7420e9fd7de3cd9c9dd936e636790bb6dd6c8c98d6b325","target":"graph","created_at":"2026-05-18T00:09:59Z","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":"As the closest Type Ia supernova in decades, SN 2014J provides a unique opportunity for detailed investigation into observational signatures of the progenitor system and explosion mechanism in addition to burning product distribution. We present a late-time near-infrared spectral series from Gemini-N at $307-466$ days after the explosion. Following the $H$-band evolution probes the distribution of radioactive iron group elements, the extent of mixing, and presence of magnetic fields in the expanding ejecta. Comparing the isolated $1.6440$ $\\mu$m [Fe II] emission line with synthetic models show","authors_text":"B. Hristov, C. Ashall, C. L. Gerardy, D. C. Collins, D. J. Sand, E. Y. Hsiao, G. H. Marion, G. Sonneborn, M. M. Phillips, M. Stritzinger, N. Morrell, P. Hoeflich, R. B. Penney, T. R. Diamond","cross_cats":["astro-ph.SR"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2018-05-09T14:39:47Z","title":"Near-infrared spectral evolution of the Type Ia supernova 2014J in the nebular phase: implications for the progenitor system"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1805.03556","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:d2e9ebad169bfeda704d566fdb88c1b64a080f5aa3a627bd69d9a304e595f22e","target":"record","created_at":"2026-05-18T00:09:59Z","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":"76beae24d1aa18877c4fee9019a32956aa3e79bf98fd349647537a6fc13b7075","cross_cats_sorted":["astro-ph.SR"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2018-05-09T14:39:47Z","title_canon_sha256":"02e3ca188bc7cd79e99127b11c79f4c6397d0779ef11de970bec2ba0366d348f"},"schema_version":"1.0","source":{"id":"1805.03556","kind":"arxiv","version":2}},"canonical_sha256":"1c55422fca7d0bc6f9413c1b8671873004e0906514e48d0db6d9bfca83157875","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"1c55422fca7d0bc6f9413c1b8671873004e0906514e48d0db6d9bfca83157875","first_computed_at":"2026-05-18T00:09:59.348727Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:09:59.348727Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"RZyX3RV2qDzjwQJlqOgKl9pDy5hZTP3tbnbVhxX+RJsUaLEpXFQsj1eNDsw84usSjJQKf9sAZAj3uzU7JAKXAg==","signature_status":"signed_v1","signed_at":"2026-05-18T00:09:59.349553Z","signed_message":"canonical_sha256_bytes"},"source_id":"1805.03556","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:d2e9ebad169bfeda704d566fdb88c1b64a080f5aa3a627bd69d9a304e595f22e","sha256:fca55417657eccf34b7420e9fd7de3cd9c9dd936e636790bb6dd6c8c98d6b325"],"state_sha256":"039c6b2183362bfd4e35bf95d85f9f63e5ce4e5046ae130d36b83ab45d74ebb7"}