{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2009:WMNNEV5LGZFQYG67ST6O2KWSI4","short_pith_number":"pith:WMNNEV5L","canonical_record":{"source":{"id":"0903.1286","kind":"arxiv","version":3},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2009-03-06T20:44:10Z","cross_cats_sorted":[],"title_canon_sha256":"7f5fe6459840147036492d875cb21d7d29784893fe5c06cbde3ec1e13b7f130d","abstract_canon_sha256":"21faed3bdb845228bc625e6415893178c85a3ad4cb42a33f64fa3e4edcee0bab"},"schema_version":"1.0"},"canonical_sha256":"b31ad257ab364b0c1bdf94fced2ad24717fbf9e5a454996c3fded21ac3300834","source":{"kind":"arxiv","id":"0903.1286","version":3},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0903.1286","created_at":"2026-05-18T02:14:36Z"},{"alias_kind":"arxiv_version","alias_value":"0903.1286v3","created_at":"2026-05-18T02:14:36Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0903.1286","created_at":"2026-05-18T02:14:36Z"},{"alias_kind":"pith_short_12","alias_value":"WMNNEV5LGZFQ","created_at":"2026-05-18T12:26:02Z"},{"alias_kind":"pith_short_16","alias_value":"WMNNEV5LGZFQYG67","created_at":"2026-05-18T12:26:02Z"},{"alias_kind":"pith_short_8","alias_value":"WMNNEV5L","created_at":"2026-05-18T12:26:02Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2009:WMNNEV5LGZFQYG67ST6O2KWSI4","target":"record","payload":{"canonical_record":{"source":{"id":"0903.1286","kind":"arxiv","version":3},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2009-03-06T20:44:10Z","cross_cats_sorted":[],"title_canon_sha256":"7f5fe6459840147036492d875cb21d7d29784893fe5c06cbde3ec1e13b7f130d","abstract_canon_sha256":"21faed3bdb845228bc625e6415893178c85a3ad4cb42a33f64fa3e4edcee0bab"},"schema_version":"1.0"},"canonical_sha256":"b31ad257ab364b0c1bdf94fced2ad24717fbf9e5a454996c3fded21ac3300834","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:14:36.736786Z","signature_b64":"5JQyUGi8D9QXRXO8bBpQBpTiLsqnxfJNRZDZ5/g8cVg4dnlxxWGZWtEcOaN2M+nxuh7cwilixhbfHdL16dQtCw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"b31ad257ab364b0c1bdf94fced2ad24717fbf9e5a454996c3fded21ac3300834","last_reissued_at":"2026-05-18T02:14:36.736236Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:14:36.736236Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"0903.1286","source_version":3,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T02:14:36Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Ms1Mtzn8UdZSPxsiNYL5HC6OhmJ6NvHw7sJ54+SBe35XlsApgTkAbbSnS8ITCKJANplb0WcXdF3dxNFefs0fBQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-30T04:56:03.351078Z"},"content_sha256":"086657681e4f7d5747c89425ad0efa3e2696fa648b757e094032077ed4378d13","schema_version":"1.0","event_id":"sha256:086657681e4f7d5747c89425ad0efa3e2696fa648b757e094032077ed4378d13"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2009:WMNNEV5LGZFQYG67ST6O2KWSI4","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"SN 2008S: an electron capture SN from a super-AGB progenitor?","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.SR","authors_text":"A. Harutyunyan, A. Pastorello, C. Benn, C. Ries, C. Trundle, D. Abraham, D. Hunter, D.L. Gorshanov, D. Tsvetkov, E. Cappellaro, F. Patat, F. P. Keenan, G. Di Rico, H. Navasardyan, I. Agnoletto, I.M. Volkov, J. Mendez, J. Th. van Loon, K. Maguire, M. Mobberley, M. Sereno, M.T. Botticella, M. Turatto, N. Elias-Rosa, R. Arbour, R. Kotak, R. M. Crockett, S. Benetti, S.J. Smartt, S. Mattila, S. Taubenberger, V. Lorenzi, V. Stanishev, W. P. S. Meikle","submitted_at":"2009-03-06T20:44:10Z","abstract_excerpt":"We present comprehensive photometric and spectroscopic observations of the faint transient SN 2008S discovered in NGC 6946. SN 2008S exhibited slow photometric evolution and almost no spectral variability during the first nine months, implying a high density CS medium. The light curve is similar in shape to that of SN 1998S and SN 1979C, although significantly fainter at maximum light. Our quasi-bolometric lightcurve extends to 300 days and shows a tail phase decay rate consistent with that of ^{56}Co. We propose that this is evidence for an explosion and formation of ^{56}Ni (0.0015 +/- 0.000"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0903.1286","kind":"arxiv","version":3},"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":"2026-05-18T02:14:36Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"KgRAlOoUE12WCC2Mytc7ThtAF2sSMshu9scx5gmVw7WIe/xKYvbogsuJsbs1NLEAMsptdlP6pG1TpVw4oOewCQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-30T04:56:03.351470Z"},"content_sha256":"5ff8dd4aeb895b5009ec4a9d9b12225787905bd8e1f8ce85a3998e86175d6984","schema_version":"1.0","event_id":"sha256:5ff8dd4aeb895b5009ec4a9d9b12225787905bd8e1f8ce85a3998e86175d6984"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/WMNNEV5LGZFQYG67ST6O2KWSI4/bundle.json","state_url":"https://pith.science/pith/WMNNEV5LGZFQYG67ST6O2KWSI4/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/WMNNEV5LGZFQYG67ST6O2KWSI4/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":"2026-05-30T04:56:03Z","links":{"resolver":"https://pith.science/pith/WMNNEV5LGZFQYG67ST6O2KWSI4","bundle":"https://pith.science/pith/WMNNEV5LGZFQYG67ST6O2KWSI4/bundle.json","state":"https://pith.science/pith/WMNNEV5LGZFQYG67ST6O2KWSI4/state.json","well_known_bundle":"https://pith.science/.well-known/pith/WMNNEV5LGZFQYG67ST6O2KWSI4/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2009:WMNNEV5LGZFQYG67ST6O2KWSI4","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":"21faed3bdb845228bc625e6415893178c85a3ad4cb42a33f64fa3e4edcee0bab","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2009-03-06T20:44:10Z","title_canon_sha256":"7f5fe6459840147036492d875cb21d7d29784893fe5c06cbde3ec1e13b7f130d"},"schema_version":"1.0","source":{"id":"0903.1286","kind":"arxiv","version":3}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0903.1286","created_at":"2026-05-18T02:14:36Z"},{"alias_kind":"arxiv_version","alias_value":"0903.1286v3","created_at":"2026-05-18T02:14:36Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0903.1286","created_at":"2026-05-18T02:14:36Z"},{"alias_kind":"pith_short_12","alias_value":"WMNNEV5LGZFQ","created_at":"2026-05-18T12:26:02Z"},{"alias_kind":"pith_short_16","alias_value":"WMNNEV5LGZFQYG67","created_at":"2026-05-18T12:26:02Z"},{"alias_kind":"pith_short_8","alias_value":"WMNNEV5L","created_at":"2026-05-18T12:26:02Z"}],"graph_snapshots":[{"event_id":"sha256:5ff8dd4aeb895b5009ec4a9d9b12225787905bd8e1f8ce85a3998e86175d6984","target":"graph","created_at":"2026-05-18T02:14:36Z","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":"We present comprehensive photometric and spectroscopic observations of the faint transient SN 2008S discovered in NGC 6946. SN 2008S exhibited slow photometric evolution and almost no spectral variability during the first nine months, implying a high density CS medium. The light curve is similar in shape to that of SN 1998S and SN 1979C, although significantly fainter at maximum light. Our quasi-bolometric lightcurve extends to 300 days and shows a tail phase decay rate consistent with that of ^{56}Co. We propose that this is evidence for an explosion and formation of ^{56}Ni (0.0015 +/- 0.000","authors_text":"A. Harutyunyan, A. Pastorello, C. Benn, C. Ries, C. Trundle, D. Abraham, D. Hunter, D.L. Gorshanov, D. Tsvetkov, E. Cappellaro, F. Patat, F. P. Keenan, G. Di Rico, H. Navasardyan, I. Agnoletto, I.M. Volkov, J. Mendez, J. Th. van Loon, K. Maguire, M. Mobberley, M. Sereno, M.T. Botticella, M. Turatto, N. Elias-Rosa, R. Arbour, R. Kotak, R. M. Crockett, S. Benetti, S.J. Smartt, S. Mattila, S. Taubenberger, V. Lorenzi, V. Stanishev, W. P. S. Meikle","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2009-03-06T20:44:10Z","title":"SN 2008S: an electron capture SN from a super-AGB progenitor?"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0903.1286","kind":"arxiv","version":3},"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":"sha256:086657681e4f7d5747c89425ad0efa3e2696fa648b757e094032077ed4378d13","target":"record","created_at":"2026-05-18T02:14:36Z","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":"21faed3bdb845228bc625e6415893178c85a3ad4cb42a33f64fa3e4edcee0bab","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2009-03-06T20:44:10Z","title_canon_sha256":"7f5fe6459840147036492d875cb21d7d29784893fe5c06cbde3ec1e13b7f130d"},"schema_version":"1.0","source":{"id":"0903.1286","kind":"arxiv","version":3}},"canonical_sha256":"b31ad257ab364b0c1bdf94fced2ad24717fbf9e5a454996c3fded21ac3300834","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"b31ad257ab364b0c1bdf94fced2ad24717fbf9e5a454996c3fded21ac3300834","first_computed_at":"2026-05-18T02:14:36.736236Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:14:36.736236Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"5JQyUGi8D9QXRXO8bBpQBpTiLsqnxfJNRZDZ5/g8cVg4dnlxxWGZWtEcOaN2M+nxuh7cwilixhbfHdL16dQtCw==","signature_status":"signed_v1","signed_at":"2026-05-18T02:14:36.736786Z","signed_message":"canonical_sha256_bytes"},"source_id":"0903.1286","source_kind":"arxiv","source_version":3}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:086657681e4f7d5747c89425ad0efa3e2696fa648b757e094032077ed4378d13","sha256:5ff8dd4aeb895b5009ec4a9d9b12225787905bd8e1f8ce85a3998e86175d6984"],"state_sha256":"f7861904192ad61703758009210bf6d73c63af0dfd71097528ba9b00afebbda9"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"mYP6CP2W5GksIddv1BE7HZFnwP1a7vA54iy0sqhK3Y68NBfyHYbPC2xRXvuDJ/Cqlm5v9YJ1VzRoiOJeZKQYCA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-30T04:56:03.353674Z","bundle_sha256":"cc45c1e9640a8f0d8906a7d778bbb17feb1ce3fec95bd8e3ab63c4acb3a23a77"}}