{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2018:FIJWHOIFIVX2VVSB27FYN7PSYE","short_pith_number":"pith:FIJWHOIF","canonical_record":{"source":{"id":"1812.08695","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2018-12-20T16:53:42Z","cross_cats_sorted":["astro-ph.SR"],"title_canon_sha256":"b5737db66cdbe1d79d465e9b2d761d66c4b997895ba526355afa1dcb783b10ca","abstract_canon_sha256":"16cdb3d455fd0f6037642c05de9ca04d61767000a7c91b704d9c5a7c2413fb08"},"schema_version":"1.0"},"canonical_sha256":"2a1363b905456faad641d7cb86fdf2c12b6ff2719e9f3ed1c749047e39549ca5","source":{"kind":"arxiv","id":"1812.08695","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1812.08695","created_at":"2026-05-17T23:54:42Z"},{"alias_kind":"arxiv_version","alias_value":"1812.08695v1","created_at":"2026-05-17T23:54:42Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1812.08695","created_at":"2026-05-17T23:54:42Z"},{"alias_kind":"pith_short_12","alias_value":"FIJWHOIFIVX2","created_at":"2026-05-18T12:32:22Z"},{"alias_kind":"pith_short_16","alias_value":"FIJWHOIFIVX2VVSB","created_at":"2026-05-18T12:32:22Z"},{"alias_kind":"pith_short_8","alias_value":"FIJWHOIF","created_at":"2026-05-18T12:32:22Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2018:FIJWHOIFIVX2VVSB27FYN7PSYE","target":"record","payload":{"canonical_record":{"source":{"id":"1812.08695","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2018-12-20T16:53:42Z","cross_cats_sorted":["astro-ph.SR"],"title_canon_sha256":"b5737db66cdbe1d79d465e9b2d761d66c4b997895ba526355afa1dcb783b10ca","abstract_canon_sha256":"16cdb3d455fd0f6037642c05de9ca04d61767000a7c91b704d9c5a7c2413fb08"},"schema_version":"1.0"},"canonical_sha256":"2a1363b905456faad641d7cb86fdf2c12b6ff2719e9f3ed1c749047e39549ca5","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-17T23:54:42.568071Z","signature_b64":"cVzX8n2bEhyTqia+0rgDA6biX9EhlA1s0E6aWSipCzP1LYTameFd/V5MWGDTNm6glehjh9vhKx6cA+sw+543Ag==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"2a1363b905456faad641d7cb86fdf2c12b6ff2719e9f3ed1c749047e39549ca5","last_reissued_at":"2026-05-17T23:54:42.567422Z","signature_status":"signed_v1","first_computed_at":"2026-05-17T23:54:42.567422Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1812.08695","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":"2026-05-17T23:54:42Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"a0bpyL6ChyZaKlXL+4ws3m7PqDZjBfkHHSwZknlLNBlje7lslxn3GGfO/vneYga7Dh0AYxtHeRJwtK6zFcXGCg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-09T00:23:15.964407Z"},"content_sha256":"29362c47b92c9025153396c0539cbb1b9f4161d781708db93834584e56efcc2f","schema_version":"1.0","event_id":"sha256:29362c47b92c9025153396c0539cbb1b9f4161d781708db93834584e56efcc2f"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2018:FIJWHOIFIVX2VVSB27FYN7PSYE","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Detecting the signatures of helium in type Iax supernovae","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.SR"],"primary_cat":"astro-ph.HE","authors_text":"(2) Tuorla Observatory, (3) MPA Garching), A. Boyle (3) ((1) Queen's University Belfast, K. Maguire (1), M. R. Magee (1), R. Kotak (2), S. A. Sim (1)","submitted_at":"2018-12-20T16:53:42Z","abstract_excerpt":"Recent studies have argued that the progenitor system of type Iax supernovae must consist of a carbon-oxygen white dwarf accreting from a helium star companion. Based on existing explosion models invoking the pure deflagration of carbon-oxygen white dwarfs, we investigate the likelihood of producing spectral features due to helium in type Iax supernovae. From this scenario, we select those explosion models producing ejecta and $^{56}$Ni masses that are broadly consistent with those estimated for type Iax supernovae (0.014 - 0.478~$M_{\\odot}$ and $\\sim0.003$ - 0.183~$M_{\\odot}$, respectively). "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1812.08695","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":"2026-05-17T23:54:42Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"2a5oyIhlflOEtuHAFnMBAE7aOL8ElgxZtu9vfljH4p29QcFYijFpDw+wAFbFhqjhbjnCVSGPzB9O7TOdTpWuAw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-09T00:23:15.964778Z"},"content_sha256":"53bc0fb64faeea051030c5d30380813222cf85d8be9108bae7d0c785e32c4aa9","schema_version":"1.0","event_id":"sha256:53bc0fb64faeea051030c5d30380813222cf85d8be9108bae7d0c785e32c4aa9"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/FIJWHOIFIVX2VVSB27FYN7PSYE/bundle.json","state_url":"https://pith.science/pith/FIJWHOIFIVX2VVSB27FYN7PSYE/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/FIJWHOIFIVX2VVSB27FYN7PSYE/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":"2026-06-09T00:23:15Z","links":{"resolver":"https://pith.science/pith/FIJWHOIFIVX2VVSB27FYN7PSYE","bundle":"https://pith.science/pith/FIJWHOIFIVX2VVSB27FYN7PSYE/bundle.json","state":"https://pith.science/pith/FIJWHOIFIVX2VVSB27FYN7PSYE/state.json","well_known_bundle":"https://pith.science/.well-known/pith/FIJWHOIFIVX2VVSB27FYN7PSYE/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:FIJWHOIFIVX2VVSB27FYN7PSYE","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":"16cdb3d455fd0f6037642c05de9ca04d61767000a7c91b704d9c5a7c2413fb08","cross_cats_sorted":["astro-ph.SR"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2018-12-20T16:53:42Z","title_canon_sha256":"b5737db66cdbe1d79d465e9b2d761d66c4b997895ba526355afa1dcb783b10ca"},"schema_version":"1.0","source":{"id":"1812.08695","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1812.08695","created_at":"2026-05-17T23:54:42Z"},{"alias_kind":"arxiv_version","alias_value":"1812.08695v1","created_at":"2026-05-17T23:54:42Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1812.08695","created_at":"2026-05-17T23:54:42Z"},{"alias_kind":"pith_short_12","alias_value":"FIJWHOIFIVX2","created_at":"2026-05-18T12:32:22Z"},{"alias_kind":"pith_short_16","alias_value":"FIJWHOIFIVX2VVSB","created_at":"2026-05-18T12:32:22Z"},{"alias_kind":"pith_short_8","alias_value":"FIJWHOIF","created_at":"2026-05-18T12:32:22Z"}],"graph_snapshots":[{"event_id":"sha256:53bc0fb64faeea051030c5d30380813222cf85d8be9108bae7d0c785e32c4aa9","target":"graph","created_at":"2026-05-17T23:54:42Z","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":"Recent studies have argued that the progenitor system of type Iax supernovae must consist of a carbon-oxygen white dwarf accreting from a helium star companion. Based on existing explosion models invoking the pure deflagration of carbon-oxygen white dwarfs, we investigate the likelihood of producing spectral features due to helium in type Iax supernovae. From this scenario, we select those explosion models producing ejecta and $^{56}$Ni masses that are broadly consistent with those estimated for type Iax supernovae (0.014 - 0.478~$M_{\\odot}$ and $\\sim0.003$ - 0.183~$M_{\\odot}$, respectively). ","authors_text":"(2) Tuorla Observatory, (3) MPA Garching), A. Boyle (3) ((1) Queen's University Belfast, K. Maguire (1), M. R. Magee (1), R. Kotak (2), S. A. Sim (1)","cross_cats":["astro-ph.SR"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2018-12-20T16:53:42Z","title":"Detecting the signatures of helium in type Iax supernovae"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1812.08695","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":"sha256:29362c47b92c9025153396c0539cbb1b9f4161d781708db93834584e56efcc2f","target":"record","created_at":"2026-05-17T23:54:42Z","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":"16cdb3d455fd0f6037642c05de9ca04d61767000a7c91b704d9c5a7c2413fb08","cross_cats_sorted":["astro-ph.SR"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2018-12-20T16:53:42Z","title_canon_sha256":"b5737db66cdbe1d79d465e9b2d761d66c4b997895ba526355afa1dcb783b10ca"},"schema_version":"1.0","source":{"id":"1812.08695","kind":"arxiv","version":1}},"canonical_sha256":"2a1363b905456faad641d7cb86fdf2c12b6ff2719e9f3ed1c749047e39549ca5","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"2a1363b905456faad641d7cb86fdf2c12b6ff2719e9f3ed1c749047e39549ca5","first_computed_at":"2026-05-17T23:54:42.567422Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-17T23:54:42.567422Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"cVzX8n2bEhyTqia+0rgDA6biX9EhlA1s0E6aWSipCzP1LYTameFd/V5MWGDTNm6glehjh9vhKx6cA+sw+543Ag==","signature_status":"signed_v1","signed_at":"2026-05-17T23:54:42.568071Z","signed_message":"canonical_sha256_bytes"},"source_id":"1812.08695","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:29362c47b92c9025153396c0539cbb1b9f4161d781708db93834584e56efcc2f","sha256:53bc0fb64faeea051030c5d30380813222cf85d8be9108bae7d0c785e32c4aa9"],"state_sha256":"4a7747f744fd6a2094382b2f105978ea065d0975c6c85e388776dfc01e3b8134"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"RUQK2EkTvr4LjOBO+rW7fzS3Yf52pSHwN2fMaHgB878jlkYeyq7RTm7Z7XVqQOU5c0Qlfz1GIrEmCbwMXGhzBg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-09T00:23:15.966742Z","bundle_sha256":"094990246603dfacb85d7e790322dd00b0c67913c47422074e32ed497ffe8c35"}}