{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2017:TAJ5CF4M2TRNONTRT3ZXQ3KP2V","short_pith_number":"pith:TAJ5CF4M","canonical_record":{"source":{"id":"1709.02257","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2017-09-05T18:33:43Z","cross_cats_sorted":["astro-ph.SR"],"title_canon_sha256":"e293bf6b11b12d527137b9ad572af9ff955be188701c3742f652cdb332c51057","abstract_canon_sha256":"a25f2998ffe0e1fcf37a25a9169ee357a69c02cd0f1d844663706536d8f4a5f7"},"schema_version":"1.0"},"canonical_sha256":"9813d1178cd4e2d736719ef3786d4fd56110e1dbf730eb3aa851b62ef4f9a85d","source":{"kind":"arxiv","id":"1709.02257","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1709.02257","created_at":"2026-05-18T00:33:13Z"},{"alias_kind":"arxiv_version","alias_value":"1709.02257v2","created_at":"2026-05-18T00:33:13Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1709.02257","created_at":"2026-05-18T00:33:13Z"},{"alias_kind":"pith_short_12","alias_value":"TAJ5CF4M2TRN","created_at":"2026-05-18T12:31:43Z"},{"alias_kind":"pith_short_16","alias_value":"TAJ5CF4M2TRNONTR","created_at":"2026-05-18T12:31:43Z"},{"alias_kind":"pith_short_8","alias_value":"TAJ5CF4M","created_at":"2026-05-18T12:31:43Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2017:TAJ5CF4M2TRNONTRT3ZXQ3KP2V","target":"record","payload":{"canonical_record":{"source":{"id":"1709.02257","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2017-09-05T18:33:43Z","cross_cats_sorted":["astro-ph.SR"],"title_canon_sha256":"e293bf6b11b12d527137b9ad572af9ff955be188701c3742f652cdb332c51057","abstract_canon_sha256":"a25f2998ffe0e1fcf37a25a9169ee357a69c02cd0f1d844663706536d8f4a5f7"},"schema_version":"1.0"},"canonical_sha256":"9813d1178cd4e2d736719ef3786d4fd56110e1dbf730eb3aa851b62ef4f9a85d","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:33:13.093297Z","signature_b64":"J8JaKWOmay16gM4wK1bwT1rfFaV6PBYUcSuEbBKdhX6+hviO1RzZcMcoHDPZePwHetXJLH69jCmCj+1rBakFCA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"9813d1178cd4e2d736719ef3786d4fd56110e1dbf730eb3aa851b62ef4f9a85d","last_reissued_at":"2026-05-18T00:33:13.092544Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:33:13.092544Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1709.02257","source_version":2,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T00:33:13Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"/VmYVH6h+EcnV3kEYbqhgy17MOPOT7uWNUJ4HPOXBF89MsIrHBhLYT8rVIByHCC4AIyObHGx23M7NmxGNcbHDg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-25T18:44:08.955616Z"},"content_sha256":"cc091561ed66b0f87dce7d296e410cca0d8443f084603b226bb660929afc8055","schema_version":"1.0","event_id":"sha256:cc091561ed66b0f87dce7d296e410cca0d8443f084603b226bb660929afc8055"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2017:TAJ5CF4M2TRNONTRT3ZXQ3KP2V","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"The Transition of a Type IIL Supernova into a Supernova Remnant: Late-time Observations of SN 2013by","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.SR"],"primary_cat":"astro-ph.HE","authors_text":"C. S. Black, D. Milisavljevic, D. Patnaude, R. A. Fesen, R. Margutti, S. Parker","submitted_at":"2017-09-05T18:33:43Z","abstract_excerpt":"We present early-time Swift and Chandra X-ray data along with late-time optical and near-infrared observations of SN 2013by, a Type IIL supernova (SN) that occurred in the nearby spiral galaxy ESO 138$-$G10 (D $\\sim 14.8$ Mpc). Optical and NIR photometry and spectroscopy follow the late-time evolution of the supernova from days +89 to +457 post-maximum brightness. The optical spectra and X-ray light curves are consistent with the picture of a SN having prolonged interaction with circumstellar material (CSM) that accelerates the transition from supernova to supernova remnant (SNR). Specifically"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1709.02257","kind":"arxiv","version":2},"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":"2026-05-18T00:33:13Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"RyqYvPCBSHeITK9i54X1eqhalFBVMIyAePxK//XcOeHz/+QrUVnLdWBol5DscKCP7LWE+WnbpLgodmOEgdtfDg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-25T18:44:08.956381Z"},"content_sha256":"baed5e60ec44629a70e7952102af513f043306d935951218dfd8e03f2830ecfc","schema_version":"1.0","event_id":"sha256:baed5e60ec44629a70e7952102af513f043306d935951218dfd8e03f2830ecfc"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/TAJ5CF4M2TRNONTRT3ZXQ3KP2V/bundle.json","state_url":"https://pith.science/pith/TAJ5CF4M2TRNONTRT3ZXQ3KP2V/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/TAJ5CF4M2TRNONTRT3ZXQ3KP2V/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":"2026-05-25T18:44:08Z","links":{"resolver":"https://pith.science/pith/TAJ5CF4M2TRNONTRT3ZXQ3KP2V","bundle":"https://pith.science/pith/TAJ5CF4M2TRNONTRT3ZXQ3KP2V/bundle.json","state":"https://pith.science/pith/TAJ5CF4M2TRNONTRT3ZXQ3KP2V/state.json","well_known_bundle":"https://pith.science/.well-known/pith/TAJ5CF4M2TRNONTRT3ZXQ3KP2V/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2017:TAJ5CF4M2TRNONTRT3ZXQ3KP2V","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":"a25f2998ffe0e1fcf37a25a9169ee357a69c02cd0f1d844663706536d8f4a5f7","cross_cats_sorted":["astro-ph.SR"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2017-09-05T18:33:43Z","title_canon_sha256":"e293bf6b11b12d527137b9ad572af9ff955be188701c3742f652cdb332c51057"},"schema_version":"1.0","source":{"id":"1709.02257","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1709.02257","created_at":"2026-05-18T00:33:13Z"},{"alias_kind":"arxiv_version","alias_value":"1709.02257v2","created_at":"2026-05-18T00:33:13Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1709.02257","created_at":"2026-05-18T00:33:13Z"},{"alias_kind":"pith_short_12","alias_value":"TAJ5CF4M2TRN","created_at":"2026-05-18T12:31:43Z"},{"alias_kind":"pith_short_16","alias_value":"TAJ5CF4M2TRNONTR","created_at":"2026-05-18T12:31:43Z"},{"alias_kind":"pith_short_8","alias_value":"TAJ5CF4M","created_at":"2026-05-18T12:31:43Z"}],"graph_snapshots":[{"event_id":"sha256:baed5e60ec44629a70e7952102af513f043306d935951218dfd8e03f2830ecfc","target":"graph","created_at":"2026-05-18T00:33:13Z","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 early-time Swift and Chandra X-ray data along with late-time optical and near-infrared observations of SN 2013by, a Type IIL supernova (SN) that occurred in the nearby spiral galaxy ESO 138$-$G10 (D $\\sim 14.8$ Mpc). Optical and NIR photometry and spectroscopy follow the late-time evolution of the supernova from days +89 to +457 post-maximum brightness. The optical spectra and X-ray light curves are consistent with the picture of a SN having prolonged interaction with circumstellar material (CSM) that accelerates the transition from supernova to supernova remnant (SNR). Specifically","authors_text":"C. S. Black, D. Milisavljevic, D. Patnaude, R. A. Fesen, R. Margutti, S. Parker","cross_cats":["astro-ph.SR"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2017-09-05T18:33:43Z","title":"The Transition of a Type IIL Supernova into a Supernova Remnant: Late-time Observations of SN 2013by"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1709.02257","kind":"arxiv","version":2},"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:cc091561ed66b0f87dce7d296e410cca0d8443f084603b226bb660929afc8055","target":"record","created_at":"2026-05-18T00:33:13Z","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":"a25f2998ffe0e1fcf37a25a9169ee357a69c02cd0f1d844663706536d8f4a5f7","cross_cats_sorted":["astro-ph.SR"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2017-09-05T18:33:43Z","title_canon_sha256":"e293bf6b11b12d527137b9ad572af9ff955be188701c3742f652cdb332c51057"},"schema_version":"1.0","source":{"id":"1709.02257","kind":"arxiv","version":2}},"canonical_sha256":"9813d1178cd4e2d736719ef3786d4fd56110e1dbf730eb3aa851b62ef4f9a85d","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"9813d1178cd4e2d736719ef3786d4fd56110e1dbf730eb3aa851b62ef4f9a85d","first_computed_at":"2026-05-18T00:33:13.092544Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:33:13.092544Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"J8JaKWOmay16gM4wK1bwT1rfFaV6PBYUcSuEbBKdhX6+hviO1RzZcMcoHDPZePwHetXJLH69jCmCj+1rBakFCA==","signature_status":"signed_v1","signed_at":"2026-05-18T00:33:13.093297Z","signed_message":"canonical_sha256_bytes"},"source_id":"1709.02257","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:cc091561ed66b0f87dce7d296e410cca0d8443f084603b226bb660929afc8055","sha256:baed5e60ec44629a70e7952102af513f043306d935951218dfd8e03f2830ecfc"],"state_sha256":"7c0b846afa8c78663bab9b893cabd0b18516a9dd3c2bfb4924e5f84190215ede"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"eUzL97KRESqcTuV+/eAukSfNm5BP2CJeZJhdPPbvkliWn7WiQkNm5M/hxnmTbsztbDfgGh5RwysDRv01yoPOCg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-25T18:44:08.962534Z","bundle_sha256":"f775319774caf39988788b93f77fe2b1b0ce2ef23aed173dc8aa8dcd734a0aa7"}}