{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2015:5ECZREEFJFAFWAREJC3DUDYBPB","short_pith_number":"pith:5ECZREEF","canonical_record":{"source":{"id":"1509.03733","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2015-09-12T12:15:44Z","cross_cats_sorted":["astro-ph.HE"],"title_canon_sha256":"51d27b23920b327cf319615a405d066e9d0899e9f2961117cbdd8e05c4d74575","abstract_canon_sha256":"aa38d1ed597a74aa359da24ee913d7fe19749b6c8afb05ed92b306d6bf35bb77"},"schema_version":"1.0"},"canonical_sha256":"e90598908549405b022448b63a0f017843e8e23622bf8ad6e65eb0b4662a0c5b","source":{"kind":"arxiv","id":"1509.03733","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1509.03733","created_at":"2026-05-18T01:33:14Z"},{"alias_kind":"arxiv_version","alias_value":"1509.03733v1","created_at":"2026-05-18T01:33:14Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1509.03733","created_at":"2026-05-18T01:33:14Z"},{"alias_kind":"pith_short_12","alias_value":"5ECZREEFJFAF","created_at":"2026-05-18T12:29:05Z"},{"alias_kind":"pith_short_16","alias_value":"5ECZREEFJFAFWARE","created_at":"2026-05-18T12:29:05Z"},{"alias_kind":"pith_short_8","alias_value":"5ECZREEF","created_at":"2026-05-18T12:29:05Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2015:5ECZREEFJFAFWAREJC3DUDYBPB","target":"record","payload":{"canonical_record":{"source":{"id":"1509.03733","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2015-09-12T12:15:44Z","cross_cats_sorted":["astro-ph.HE"],"title_canon_sha256":"51d27b23920b327cf319615a405d066e9d0899e9f2961117cbdd8e05c4d74575","abstract_canon_sha256":"aa38d1ed597a74aa359da24ee913d7fe19749b6c8afb05ed92b306d6bf35bb77"},"schema_version":"1.0"},"canonical_sha256":"e90598908549405b022448b63a0f017843e8e23622bf8ad6e65eb0b4662a0c5b","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:33:14.704852Z","signature_b64":"Qdw0kA3dsR+tAQ0EmNGAOlJ1906ad8yVqNPsb31hNdjDqP6C9am5foNsp0TnZA54rUEFBY7cF/odJiuZhhiwAw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"e90598908549405b022448b63a0f017843e8e23622bf8ad6e65eb0b4662a0c5b","last_reissued_at":"2026-05-18T01:33:14.704229Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:33:14.704229Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1509.03733","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":"2026-05-18T01:33:14Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"TOanR4fsBDJtoJnEJ9POAS3+4hTLW0AoPdQt+23TLJmL/9VW7T3pwqJvvT+tnInRXeRke/Y0xtDEU3oOpvd+CQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-24T08:32:39.029554Z"},"content_sha256":"e5d4c9eb6cd56c3ac966141b35a8cabfc69c42337bf9d08a91026276b6223478","schema_version":"1.0","event_id":"sha256:e5d4c9eb6cd56c3ac966141b35a8cabfc69c42337bf9d08a91026276b6223478"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2015:5ECZREEFJFAFWAREJC3DUDYBPB","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"SN 2011fu: A type IIb Supernova with a luminous double-peaked light curve","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.HE"],"primary_cat":"astro-ph.SR","authors_text":"A. Jerkstrand, A. Morales-Garoffolo, A. Pastorello, D. A. Howell, E. Cappellaro, E. Garc\\'ia, F. Bufano, J. Isern, L. Tomasella, M. Bersten, M. Ergon, M. Fraser, N. Elias-Rosa, R. Kotak, R. M. Dom\\'inguez, S. Benetti, S. J. Smartt, S. Taubenberger, S. Valenti, X. Gao","submitted_at":"2015-09-12T12:15:44Z","abstract_excerpt":"We present optical and near infrared observations of the type IIb supernova (SN) 2011fu from a few days to $\\sim300$ d after explosion. The SN presents a double-peaked light curve (LC) similar to that of SN 1993J, although more luminous and with a longer cooling phase after the primary peak. The spectral evolution is also similar to SN 1993J's, with hydrogen dominating the spectra to $\\sim40$ d, then helium gaining strength, and nebular emission lines appearing from $\\sim60$ d post-explosion. The velocities derived from the P-Cygni absorptions are overall similar to those of other type IIb SNe"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1509.03733","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":"2026-05-18T01:33:14Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"yzDIpCss23JG6MTxvrSf6CqjQOWK7HF5eWJV9rw+Vzx7nYUq74FLW1TjXLLMo9ado/WLdiO4PyYEtHAKFQ1oCA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-24T08:32:39.030187Z"},"content_sha256":"672b442d9a9a679df6b0813bcd46043096a7ab8c3a890a94a7a6063dea186f51","schema_version":"1.0","event_id":"sha256:672b442d9a9a679df6b0813bcd46043096a7ab8c3a890a94a7a6063dea186f51"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/5ECZREEFJFAFWAREJC3DUDYBPB/bundle.json","state_url":"https://pith.science/pith/5ECZREEFJFAFWAREJC3DUDYBPB/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/5ECZREEFJFAFWAREJC3DUDYBPB/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":"2026-05-24T08:32:39Z","links":{"resolver":"https://pith.science/pith/5ECZREEFJFAFWAREJC3DUDYBPB","bundle":"https://pith.science/pith/5ECZREEFJFAFWAREJC3DUDYBPB/bundle.json","state":"https://pith.science/pith/5ECZREEFJFAFWAREJC3DUDYBPB/state.json","well_known_bundle":"https://pith.science/.well-known/pith/5ECZREEFJFAFWAREJC3DUDYBPB/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2015:5ECZREEFJFAFWAREJC3DUDYBPB","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":"aa38d1ed597a74aa359da24ee913d7fe19749b6c8afb05ed92b306d6bf35bb77","cross_cats_sorted":["astro-ph.HE"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2015-09-12T12:15:44Z","title_canon_sha256":"51d27b23920b327cf319615a405d066e9d0899e9f2961117cbdd8e05c4d74575"},"schema_version":"1.0","source":{"id":"1509.03733","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1509.03733","created_at":"2026-05-18T01:33:14Z"},{"alias_kind":"arxiv_version","alias_value":"1509.03733v1","created_at":"2026-05-18T01:33:14Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1509.03733","created_at":"2026-05-18T01:33:14Z"},{"alias_kind":"pith_short_12","alias_value":"5ECZREEFJFAF","created_at":"2026-05-18T12:29:05Z"},{"alias_kind":"pith_short_16","alias_value":"5ECZREEFJFAFWARE","created_at":"2026-05-18T12:29:05Z"},{"alias_kind":"pith_short_8","alias_value":"5ECZREEF","created_at":"2026-05-18T12:29:05Z"}],"graph_snapshots":[{"event_id":"sha256:672b442d9a9a679df6b0813bcd46043096a7ab8c3a890a94a7a6063dea186f51","target":"graph","created_at":"2026-05-18T01:33:14Z","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 optical and near infrared observations of the type IIb supernova (SN) 2011fu from a few days to $\\sim300$ d after explosion. The SN presents a double-peaked light curve (LC) similar to that of SN 1993J, although more luminous and with a longer cooling phase after the primary peak. The spectral evolution is also similar to SN 1993J's, with hydrogen dominating the spectra to $\\sim40$ d, then helium gaining strength, and nebular emission lines appearing from $\\sim60$ d post-explosion. The velocities derived from the P-Cygni absorptions are overall similar to those of other type IIb SNe","authors_text":"A. Jerkstrand, A. Morales-Garoffolo, A. Pastorello, D. A. Howell, E. Cappellaro, E. Garc\\'ia, F. Bufano, J. Isern, L. Tomasella, M. Bersten, M. Ergon, M. Fraser, N. Elias-Rosa, R. Kotak, R. M. Dom\\'inguez, S. Benetti, S. J. Smartt, S. Taubenberger, S. Valenti, X. Gao","cross_cats":["astro-ph.HE"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2015-09-12T12:15:44Z","title":"SN 2011fu: A type IIb Supernova with a luminous double-peaked light curve"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1509.03733","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:e5d4c9eb6cd56c3ac966141b35a8cabfc69c42337bf9d08a91026276b6223478","target":"record","created_at":"2026-05-18T01:33:14Z","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":"aa38d1ed597a74aa359da24ee913d7fe19749b6c8afb05ed92b306d6bf35bb77","cross_cats_sorted":["astro-ph.HE"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2015-09-12T12:15:44Z","title_canon_sha256":"51d27b23920b327cf319615a405d066e9d0899e9f2961117cbdd8e05c4d74575"},"schema_version":"1.0","source":{"id":"1509.03733","kind":"arxiv","version":1}},"canonical_sha256":"e90598908549405b022448b63a0f017843e8e23622bf8ad6e65eb0b4662a0c5b","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"e90598908549405b022448b63a0f017843e8e23622bf8ad6e65eb0b4662a0c5b","first_computed_at":"2026-05-18T01:33:14.704229Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:33:14.704229Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"Qdw0kA3dsR+tAQ0EmNGAOlJ1906ad8yVqNPsb31hNdjDqP6C9am5foNsp0TnZA54rUEFBY7cF/odJiuZhhiwAw==","signature_status":"signed_v1","signed_at":"2026-05-18T01:33:14.704852Z","signed_message":"canonical_sha256_bytes"},"source_id":"1509.03733","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:e5d4c9eb6cd56c3ac966141b35a8cabfc69c42337bf9d08a91026276b6223478","sha256:672b442d9a9a679df6b0813bcd46043096a7ab8c3a890a94a7a6063dea186f51"],"state_sha256":"9b80c8e89a621e1521bfbcc66eda7d750fa7b74e32dd064e04106115dcd8b789"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"GcWbnFOK9eSFNUz04KNZ5gvQ7Tbv2qs0XB6jj8C4xj105CJY4bZ39GTEq2L0a0zaFDhqYhdvI4dFxTS1DHvbCQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-24T08:32:39.033007Z","bundle_sha256":"6b45422e557e8fe7a358f8e22cc000e436bf701dc3360dfe8cc6b3f227436bf2"}}