{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2015:TLNDC6IAWXWDQN7GSHL4MWNVP7","short_pith_number":"pith:TLNDC6IA","canonical_record":{"source":{"id":"1503.03088","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2015-03-10T20:29:05Z","cross_cats_sorted":["astro-ph.SR"],"title_canon_sha256":"13008ae513ed8cb460903fcdf22fecec1e0a8123596f8fcb5a58f144224ce554","abstract_canon_sha256":"8270eb4c7ec948866f37c04e39532eb221df3225b9de67fdd5c2140d42ab3827"},"schema_version":"1.0"},"canonical_sha256":"9ada317900b5ec3837e691d7c659b57fe8e1e8af14061621a252ae4eb510e056","source":{"kind":"arxiv","id":"1503.03088","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1503.03088","created_at":"2026-05-18T02:25:04Z"},{"alias_kind":"arxiv_version","alias_value":"1503.03088v1","created_at":"2026-05-18T02:25:04Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1503.03088","created_at":"2026-05-18T02:25:04Z"},{"alias_kind":"pith_short_12","alias_value":"TLNDC6IAWXWD","created_at":"2026-05-18T12:29:42Z"},{"alias_kind":"pith_short_16","alias_value":"TLNDC6IAWXWDQN7G","created_at":"2026-05-18T12:29:42Z"},{"alias_kind":"pith_short_8","alias_value":"TLNDC6IA","created_at":"2026-05-18T12:29:42Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2015:TLNDC6IAWXWDQN7GSHL4MWNVP7","target":"record","payload":{"canonical_record":{"source":{"id":"1503.03088","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2015-03-10T20:29:05Z","cross_cats_sorted":["astro-ph.SR"],"title_canon_sha256":"13008ae513ed8cb460903fcdf22fecec1e0a8123596f8fcb5a58f144224ce554","abstract_canon_sha256":"8270eb4c7ec948866f37c04e39532eb221df3225b9de67fdd5c2140d42ab3827"},"schema_version":"1.0"},"canonical_sha256":"9ada317900b5ec3837e691d7c659b57fe8e1e8af14061621a252ae4eb510e056","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:25:04.280108Z","signature_b64":"SREku/lLijs8UdTWj9Nq4Uvn2xPZN3GWYXUPCtEiwEo0/Na1KAITuzVxrmLx8UL/yDm+qErQqLw9gh0qySJyBQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"9ada317900b5ec3837e691d7c659b57fe8e1e8af14061621a252ae4eb510e056","last_reissued_at":"2026-05-18T02:25:04.279755Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:25:04.279755Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1503.03088","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":"2026-05-18T02:25:04Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"rrQDoOmXnjbMFWsPZkixarCk++wIuk7vS/kKcWirpdtL48uupht+fRjawaPK+2bEdRIcI/AcIBJ1r9/m71U8Cg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-10T22:44:33.461071Z"},"content_sha256":"6890c1cee7c312c56d9ce8db7f1d7ab118ccf2f32f889e65bbf86d37471a2a8d","schema_version":"1.0","event_id":"sha256:6890c1cee7c312c56d9ce8db7f1d7ab118ccf2f32f889e65bbf86d37471a2a8d"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2015:TLNDC6IAWXWDQN7GSHL4MWNVP7","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Identification of the feature that causes the I-band secondary maximum of a type Ia supernova","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.SR"],"primary_cat":"astro-ph.HE","authors_text":"D. Jack, E. Baron, P. H. Hauschildt","submitted_at":"2015-03-10T20:29:05Z","abstract_excerpt":"We obtained a time series of spectra covering the secondary maximum in the I-band of the bright Type Ia supernova 2014J in M82 with the TIGRE telescope. Comparing the observations with theoretical models calculated with the time dependent extension of the PHOENIX code, we identify the feature that causes the secondary maximum in the I-band light curve. Fe II 3d6(3D)4s-3d6(5D)4p and similar high excitation transitions produce a blended feature at 7500 {\\AA}, which causes the rise of the light curve towards the secondary maximum. The series of observed spectra of SN 2014J and archival data of SN"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1503.03088","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":"2026-05-18T02:25:04Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"8xNFbKLu4PFgkXE/MafWTwMhxzW4Xvh/tKjxh9vwXkAyupbc2/a4zeWmfe+q11bJnFf8867Tb8mV/ik1iMTDDA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-10T22:44:33.461440Z"},"content_sha256":"a5b66969286f402313a1db85def903812b062dc0dcf04f8fa467ce08c71a67ee","schema_version":"1.0","event_id":"sha256:a5b66969286f402313a1db85def903812b062dc0dcf04f8fa467ce08c71a67ee"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/TLNDC6IAWXWDQN7GSHL4MWNVP7/bundle.json","state_url":"https://pith.science/pith/TLNDC6IAWXWDQN7GSHL4MWNVP7/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/TLNDC6IAWXWDQN7GSHL4MWNVP7/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":"2026-06-10T22:44:33Z","links":{"resolver":"https://pith.science/pith/TLNDC6IAWXWDQN7GSHL4MWNVP7","bundle":"https://pith.science/pith/TLNDC6IAWXWDQN7GSHL4MWNVP7/bundle.json","state":"https://pith.science/pith/TLNDC6IAWXWDQN7GSHL4MWNVP7/state.json","well_known_bundle":"https://pith.science/.well-known/pith/TLNDC6IAWXWDQN7GSHL4MWNVP7/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2015:TLNDC6IAWXWDQN7GSHL4MWNVP7","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":"8270eb4c7ec948866f37c04e39532eb221df3225b9de67fdd5c2140d42ab3827","cross_cats_sorted":["astro-ph.SR"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2015-03-10T20:29:05Z","title_canon_sha256":"13008ae513ed8cb460903fcdf22fecec1e0a8123596f8fcb5a58f144224ce554"},"schema_version":"1.0","source":{"id":"1503.03088","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1503.03088","created_at":"2026-05-18T02:25:04Z"},{"alias_kind":"arxiv_version","alias_value":"1503.03088v1","created_at":"2026-05-18T02:25:04Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1503.03088","created_at":"2026-05-18T02:25:04Z"},{"alias_kind":"pith_short_12","alias_value":"TLNDC6IAWXWD","created_at":"2026-05-18T12:29:42Z"},{"alias_kind":"pith_short_16","alias_value":"TLNDC6IAWXWDQN7G","created_at":"2026-05-18T12:29:42Z"},{"alias_kind":"pith_short_8","alias_value":"TLNDC6IA","created_at":"2026-05-18T12:29:42Z"}],"graph_snapshots":[{"event_id":"sha256:a5b66969286f402313a1db85def903812b062dc0dcf04f8fa467ce08c71a67ee","target":"graph","created_at":"2026-05-18T02:25:04Z","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 obtained a time series of spectra covering the secondary maximum in the I-band of the bright Type Ia supernova 2014J in M82 with the TIGRE telescope. Comparing the observations with theoretical models calculated with the time dependent extension of the PHOENIX code, we identify the feature that causes the secondary maximum in the I-band light curve. Fe II 3d6(3D)4s-3d6(5D)4p and similar high excitation transitions produce a blended feature at 7500 {\\AA}, which causes the rise of the light curve towards the secondary maximum. The series of observed spectra of SN 2014J and archival data of SN","authors_text":"D. Jack, E. Baron, P. H. Hauschildt","cross_cats":["astro-ph.SR"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2015-03-10T20:29:05Z","title":"Identification of the feature that causes the I-band secondary maximum of a type Ia supernova"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1503.03088","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":"sha256:6890c1cee7c312c56d9ce8db7f1d7ab118ccf2f32f889e65bbf86d37471a2a8d","target":"record","created_at":"2026-05-18T02:25:04Z","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":"8270eb4c7ec948866f37c04e39532eb221df3225b9de67fdd5c2140d42ab3827","cross_cats_sorted":["astro-ph.SR"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2015-03-10T20:29:05Z","title_canon_sha256":"13008ae513ed8cb460903fcdf22fecec1e0a8123596f8fcb5a58f144224ce554"},"schema_version":"1.0","source":{"id":"1503.03088","kind":"arxiv","version":1}},"canonical_sha256":"9ada317900b5ec3837e691d7c659b57fe8e1e8af14061621a252ae4eb510e056","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"9ada317900b5ec3837e691d7c659b57fe8e1e8af14061621a252ae4eb510e056","first_computed_at":"2026-05-18T02:25:04.279755Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:25:04.279755Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"SREku/lLijs8UdTWj9Nq4Uvn2xPZN3GWYXUPCtEiwEo0/Na1KAITuzVxrmLx8UL/yDm+qErQqLw9gh0qySJyBQ==","signature_status":"signed_v1","signed_at":"2026-05-18T02:25:04.280108Z","signed_message":"canonical_sha256_bytes"},"source_id":"1503.03088","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:6890c1cee7c312c56d9ce8db7f1d7ab118ccf2f32f889e65bbf86d37471a2a8d","sha256:a5b66969286f402313a1db85def903812b062dc0dcf04f8fa467ce08c71a67ee"],"state_sha256":"e1802e34264c267467789399fae830622c96d4e8c879d31e71dff4e6c8dc6818"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"XWWie9RZaWsZXcszE3Ol/0X0zPXpdUHjTmvzj23s+p7Tp5ucjzds/dBWIk7q+WqanBfPkrKJR6lASE0SObR2Bg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-10T22:44:33.463298Z","bundle_sha256":"a9f0fde2c3ee3bcbdada2c6743c9b256f5a5bb477a1506955e30ffebf009816f"}}