{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2015:I45MTUUVOVZZELWK5G4QB4GSTI","short_pith_number":"pith:I45MTUUV","canonical_record":{"source":{"id":"1510.04286","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2015-10-14T20:16:38Z","cross_cats_sorted":["astro-ph.SR"],"title_canon_sha256":"e6b7ff214de2b2d3e653d24a5b825535e2e312433601432c2afe62e93de9de39","abstract_canon_sha256":"bb19c4187bd058781c19d8eb685a6f02628bcd309bc759b3712dd6550b3aa622"},"schema_version":"1.0"},"canonical_sha256":"473ac9d2957573922ecae9b900f0d29a3dc3fe880037bf08cf5d533bb7d013cb","source":{"kind":"arxiv","id":"1510.04286","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1510.04286","created_at":"2026-05-18T01:08:43Z"},{"alias_kind":"arxiv_version","alias_value":"1510.04286v2","created_at":"2026-05-18T01:08:43Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1510.04286","created_at":"2026-05-18T01:08:43Z"},{"alias_kind":"pith_short_12","alias_value":"I45MTUUVOVZZ","created_at":"2026-05-18T12:29:25Z"},{"alias_kind":"pith_short_16","alias_value":"I45MTUUVOVZZELWK","created_at":"2026-05-18T12:29:25Z"},{"alias_kind":"pith_short_8","alias_value":"I45MTUUV","created_at":"2026-05-18T12:29:25Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2015:I45MTUUVOVZZELWK5G4QB4GSTI","target":"record","payload":{"canonical_record":{"source":{"id":"1510.04286","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2015-10-14T20:16:38Z","cross_cats_sorted":["astro-ph.SR"],"title_canon_sha256":"e6b7ff214de2b2d3e653d24a5b825535e2e312433601432c2afe62e93de9de39","abstract_canon_sha256":"bb19c4187bd058781c19d8eb685a6f02628bcd309bc759b3712dd6550b3aa622"},"schema_version":"1.0"},"canonical_sha256":"473ac9d2957573922ecae9b900f0d29a3dc3fe880037bf08cf5d533bb7d013cb","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:08:43.302613Z","signature_b64":"67wyA2KsnW0Bu1bBwD80vPctZShYFiaa5e8JEFPDX4AdbvyQ2+hM2QF2cHRqYRBxvSxjc9NiLjGp7DGZnQvOAQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"473ac9d2957573922ecae9b900f0d29a3dc3fe880037bf08cf5d533bb7d013cb","last_reissued_at":"2026-05-18T01:08:43.302108Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:08:43.302108Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1510.04286","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":"2026-05-18T01:08:43Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"B+zfDo4NrOR8JGMx1rSVX2vWF1rcXR7LW6ZM22vkyzKDGnz8M9+7h8+HhIjf9KYT0jvWSlSbd5g7jMe9E2u8Aw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-03T01:49:27.382907Z"},"content_sha256":"f52090649610bd9482e634a281cf420b9ab4f3a9b12a125c47ce4f88456f6a73","schema_version":"1.0","event_id":"sha256:f52090649610bd9482e634a281cf420b9ab4f3a9b12a125c47ce4f88456f6a73"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2015:I45MTUUVOVZZELWK5G4QB4GSTI","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Light Curves and Spectra from a Thermonuclear Explosion of a White Dwarf Merger","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.SR"],"primary_cat":"astro-ph.HE","authors_text":"Daniel R. van Rossum, Enrique Garcia-Berro, Gabriela Aznar-Siguan, Pablo Loren-Aguilar, Rahul Kashyap, Robert Fisher, Ryan T. Wollaeger, Suoqing Ji","submitted_at":"2015-10-14T20:16:38Z","abstract_excerpt":"Double-degenerate (DD) mergers of carbon-oxygen white dwarfs have recently emerged as a leading candidate for normal Type Ia supernovae (SNe Ia). However, many outstanding questions surround DD mergers, including the characteristics of their light curves and spectra. We have recently identified a spiral instability in the post-merger phase of DD mergers and demonstrated that this instability self-consistently leads to detonation in some cases. We call this the spiral merger SN Ia model. Here, we utilize the SuperNu radiative transfer software to calculate three-dimensional synthetic light curv"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1510.04286","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":"2026-05-18T01:08:43Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"GmB765d8Vtfb7jXKITCHyU3eYj67v0EZULqEGLDuvGBfEgcdgnLt43jz3XwczUUN616iD5xE2Q5VK/KxPh/bAQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-03T01:49:27.383301Z"},"content_sha256":"70e4404dc95ebd1119dee702f0719a8f2eb037f2c080e23791f64eeafe0def3d","schema_version":"1.0","event_id":"sha256:70e4404dc95ebd1119dee702f0719a8f2eb037f2c080e23791f64eeafe0def3d"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/I45MTUUVOVZZELWK5G4QB4GSTI/bundle.json","state_url":"https://pith.science/pith/I45MTUUVOVZZELWK5G4QB4GSTI/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/I45MTUUVOVZZELWK5G4QB4GSTI/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":"2026-06-03T01:49:27Z","links":{"resolver":"https://pith.science/pith/I45MTUUVOVZZELWK5G4QB4GSTI","bundle":"https://pith.science/pith/I45MTUUVOVZZELWK5G4QB4GSTI/bundle.json","state":"https://pith.science/pith/I45MTUUVOVZZELWK5G4QB4GSTI/state.json","well_known_bundle":"https://pith.science/.well-known/pith/I45MTUUVOVZZELWK5G4QB4GSTI/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2015:I45MTUUVOVZZELWK5G4QB4GSTI","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":"bb19c4187bd058781c19d8eb685a6f02628bcd309bc759b3712dd6550b3aa622","cross_cats_sorted":["astro-ph.SR"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2015-10-14T20:16:38Z","title_canon_sha256":"e6b7ff214de2b2d3e653d24a5b825535e2e312433601432c2afe62e93de9de39"},"schema_version":"1.0","source":{"id":"1510.04286","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1510.04286","created_at":"2026-05-18T01:08:43Z"},{"alias_kind":"arxiv_version","alias_value":"1510.04286v2","created_at":"2026-05-18T01:08:43Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1510.04286","created_at":"2026-05-18T01:08:43Z"},{"alias_kind":"pith_short_12","alias_value":"I45MTUUVOVZZ","created_at":"2026-05-18T12:29:25Z"},{"alias_kind":"pith_short_16","alias_value":"I45MTUUVOVZZELWK","created_at":"2026-05-18T12:29:25Z"},{"alias_kind":"pith_short_8","alias_value":"I45MTUUV","created_at":"2026-05-18T12:29:25Z"}],"graph_snapshots":[{"event_id":"sha256:70e4404dc95ebd1119dee702f0719a8f2eb037f2c080e23791f64eeafe0def3d","target":"graph","created_at":"2026-05-18T01:08:43Z","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":"Double-degenerate (DD) mergers of carbon-oxygen white dwarfs have recently emerged as a leading candidate for normal Type Ia supernovae (SNe Ia). However, many outstanding questions surround DD mergers, including the characteristics of their light curves and spectra. We have recently identified a spiral instability in the post-merger phase of DD mergers and demonstrated that this instability self-consistently leads to detonation in some cases. We call this the spiral merger SN Ia model. Here, we utilize the SuperNu radiative transfer software to calculate three-dimensional synthetic light curv","authors_text":"Daniel R. van Rossum, Enrique Garcia-Berro, Gabriela Aznar-Siguan, Pablo Loren-Aguilar, Rahul Kashyap, Robert Fisher, Ryan T. Wollaeger, Suoqing Ji","cross_cats":["astro-ph.SR"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2015-10-14T20:16:38Z","title":"Light Curves and Spectra from a Thermonuclear Explosion of a White Dwarf Merger"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1510.04286","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:f52090649610bd9482e634a281cf420b9ab4f3a9b12a125c47ce4f88456f6a73","target":"record","created_at":"2026-05-18T01:08:43Z","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":"bb19c4187bd058781c19d8eb685a6f02628bcd309bc759b3712dd6550b3aa622","cross_cats_sorted":["astro-ph.SR"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2015-10-14T20:16:38Z","title_canon_sha256":"e6b7ff214de2b2d3e653d24a5b825535e2e312433601432c2afe62e93de9de39"},"schema_version":"1.0","source":{"id":"1510.04286","kind":"arxiv","version":2}},"canonical_sha256":"473ac9d2957573922ecae9b900f0d29a3dc3fe880037bf08cf5d533bb7d013cb","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"473ac9d2957573922ecae9b900f0d29a3dc3fe880037bf08cf5d533bb7d013cb","first_computed_at":"2026-05-18T01:08:43.302108Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:08:43.302108Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"67wyA2KsnW0Bu1bBwD80vPctZShYFiaa5e8JEFPDX4AdbvyQ2+hM2QF2cHRqYRBxvSxjc9NiLjGp7DGZnQvOAQ==","signature_status":"signed_v1","signed_at":"2026-05-18T01:08:43.302613Z","signed_message":"canonical_sha256_bytes"},"source_id":"1510.04286","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:f52090649610bd9482e634a281cf420b9ab4f3a9b12a125c47ce4f88456f6a73","sha256:70e4404dc95ebd1119dee702f0719a8f2eb037f2c080e23791f64eeafe0def3d"],"state_sha256":"edadbebd3e20213adebf8e9e03a31019013572a0525f4a6269b06441292a20bf"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"MhgbxUgrPke99EI4/57OpHXqshr8da0CaRcWHeOlqlcelXRRIPuHCWGOculC4+M5FntCqtAOTPBKZoRqh5y0Bg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-03T01:49:27.385436Z","bundle_sha256":"c725a406450d1fdc7562fa5c077a6c9bde71da6461a0ca260078c8f9bcff5471"}}