{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2015:YYUOJ6VONOL3JZD2QXGXE4LP7K","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":"75b5d0c9dac357eed1c38c9699a9f97135bebf3ceb549016e8896d9962d62b64","cross_cats_sorted":["astro-ph.SR"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2015-09-23T20:05:31Z","title_canon_sha256":"82bc8ee5757ae422d4f7baf0448deff43cfb991ad40179ce32910c0536730444"},"schema_version":"1.0","source":{"id":"1509.07124","kind":"arxiv","version":3}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1509.07124","created_at":"2026-05-18T00:55:47Z"},{"alias_kind":"arxiv_version","alias_value":"1509.07124v3","created_at":"2026-05-18T00:55:47Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1509.07124","created_at":"2026-05-18T00:55:47Z"},{"alias_kind":"pith_short_12","alias_value":"YYUOJ6VONOL3","created_at":"2026-05-18T12:29:52Z"},{"alias_kind":"pith_short_16","alias_value":"YYUOJ6VONOL3JZD2","created_at":"2026-05-18T12:29:52Z"},{"alias_kind":"pith_short_8","alias_value":"YYUOJ6VO","created_at":"2026-05-18T12:29:52Z"}],"graph_snapshots":[{"event_id":"sha256:46b76416ca5a0ffce267e60d0eac5dc9d47f420cab0ff9d7f0a66b16374b873d","target":"graph","created_at":"2026-05-18T00:55:47Z","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 the first systematic investigation of spectral properties of 17 Type Ic Supernovae (SNe Ic), 10 broad-lined SNe Ic (SNe Ic-bl) without observed Gamma-Ray Bursts (GRBs) and 11 SNe Ic-bl with GRBs (SN-GRBs) as a function of time in order to probe their explosion conditions and progenitors. We analyze a total of 407 spectra, which were drawn from published spectra of individual SNe as well as from the densely time-sampled spectra data of Modjaz et al. (2014). In order to quantify the diversity of the SN spectra as a function of SN subtype, we construct average spectra of SNe Ic, SNe Ic","authors_text":"2) ((1) New York University, (2) American Museum of Natural History), Federica B. Bianco (1), Maryam Modjaz (1), Or Graur (1, Yuqian Q. Liu (1)","cross_cats":["astro-ph.SR"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2015-09-23T20:05:31Z","title":"The Spectral SN-GRB Connection: Systematic Spectral Comparisons between Type Ic Supernovae, and broad-lined Type Ic Supernovae with and without Gamma-Ray Bursts"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1509.07124","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":"sha256:44d60d4bf11833cf482f87e81f556fddb81d474eabc66ab65b4a550f40666545","target":"record","created_at":"2026-05-18T00:55:47Z","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":"75b5d0c9dac357eed1c38c9699a9f97135bebf3ceb549016e8896d9962d62b64","cross_cats_sorted":["astro-ph.SR"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2015-09-23T20:05:31Z","title_canon_sha256":"82bc8ee5757ae422d4f7baf0448deff43cfb991ad40179ce32910c0536730444"},"schema_version":"1.0","source":{"id":"1509.07124","kind":"arxiv","version":3}},"canonical_sha256":"c628e4faae6b97b4e47a85cd72716ffa8acdd977bfd64dc317dcb92d003acca4","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"c628e4faae6b97b4e47a85cd72716ffa8acdd977bfd64dc317dcb92d003acca4","first_computed_at":"2026-05-18T00:55:47.140966Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:55:47.140966Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"BjzP1JV7cB0hyuuakbCSpIJTbZkzjR6OKaM/of8YDNhkUumxqLzB75G7/e9Z2gTtJLHGeynzPxgfLY+XNgFOCA==","signature_status":"signed_v1","signed_at":"2026-05-18T00:55:47.141412Z","signed_message":"canonical_sha256_bytes"},"source_id":"1509.07124","source_kind":"arxiv","source_version":3}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:44d60d4bf11833cf482f87e81f556fddb81d474eabc66ab65b4a550f40666545","sha256:46b76416ca5a0ffce267e60d0eac5dc9d47f420cab0ff9d7f0a66b16374b873d"],"state_sha256":"9d759ac31573222500d529c4acff50c78357c22f3c55b6265db9ab3b174b5819"}