{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2024:WZOUQTFW7DIHGNLSHCWG26SZGX","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":"71b6907d2fde9eddb250e9477de4614fff9db642df9ad622a74dcc00a521763f","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2024-03-01T19:16:14Z","title_canon_sha256":"c16457ac34ec0d536a7ae9e007865c040d9d1cae1c70fcc4aed68a84af73439c"},"schema_version":"1.0","source":{"id":"2403.00927","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2403.00927","created_at":"2026-07-05T07:51:14Z"},{"alias_kind":"arxiv_version","alias_value":"2403.00927v1","created_at":"2026-07-05T07:51:14Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2403.00927","created_at":"2026-07-05T07:51:14Z"},{"alias_kind":"pith_short_12","alias_value":"WZOUQTFW7DIH","created_at":"2026-07-05T07:51:14Z"},{"alias_kind":"pith_short_16","alias_value":"WZOUQTFW7DIHGNLS","created_at":"2026-07-05T07:51:14Z"},{"alias_kind":"pith_short_8","alias_value":"WZOUQTFW","created_at":"2026-07-05T07:51:14Z"}],"graph_snapshots":[{"event_id":"sha256:b8327d18ce880b41eb5a70a96eb15823e3c986625a0c7f83585ebcffb479b8f3","target":"graph","created_at":"2026-07-05T07:51:14Z","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"},"integrity":{"available":true,"clean":true,"detectors_run":[],"endpoint":"/pith/2403.00927/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We present an optical photometric and spectroscopic analysis of the fast-declining hydrogen-rich Type II supernova (SN) 2019nyk. The light curve properties of SN 2019nyk align well with those of other fast-declining Type II SNe, such as SNe 2013by and 2014G. SN 2019nyk exhibits a peak absolute magnitude of -18.09 $\\pm$ 0.17 mag in the V band, followed by a rapid decline at 2.84 $\\pm$ 0.03 mag (100 d)$^{-1}$ during the recombination phase. The early spectra of SN 2019nyk exhibit high-ionisation emission features as well as narrow H Balmer lines, persisting until 4.1 d since explosion, indicatin","authors_text":"Amit Kumar, Anjasha Gangopadhyay, Curtis McCully, Daichi Hiramatsu, D. Andrew Howell, Giuliano Pignata, Javier Silva-Farf\\'an, K. Azalee Bostroem, Kuntal Misra, Mridweeka Singh, Naveen Dukiya, Raya Dastidar","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2024-03-01T19:16:14Z","title":"SN 2019nyk: A rapidly declining Type II supernova with early interaction signatures"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2403.00927","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:a7996a89a7ae280bf6dbe39d2a8d6311748ee60a90bc8a3fe1977f37234b15b2","target":"record","created_at":"2026-07-05T07:51:14Z","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":"71b6907d2fde9eddb250e9477de4614fff9db642df9ad622a74dcc00a521763f","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2024-03-01T19:16:14Z","title_canon_sha256":"c16457ac34ec0d536a7ae9e007865c040d9d1cae1c70fcc4aed68a84af73439c"},"schema_version":"1.0","source":{"id":"2403.00927","kind":"arxiv","version":1}},"canonical_sha256":"b65d484cb6f8d073357238ac6d7a5935c10e39408fbaaf93a29887d4458f558a","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"b65d484cb6f8d073357238ac6d7a5935c10e39408fbaaf93a29887d4458f558a","first_computed_at":"2026-07-05T07:51:14.256723Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T07:51:14.256723Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"htHoGoFezWbXrt/jZdWkw8t+JYtvj7JOlz4Ve2PB9yB6FH+OFvqnal+Stq4eT0KRF0gCEw18qiufAScGqv0sCw==","signature_status":"signed_v1","signed_at":"2026-07-05T07:51:14.257174Z","signed_message":"canonical_sha256_bytes"},"source_id":"2403.00927","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:a7996a89a7ae280bf6dbe39d2a8d6311748ee60a90bc8a3fe1977f37234b15b2","sha256:b8327d18ce880b41eb5a70a96eb15823e3c986625a0c7f83585ebcffb479b8f3"],"state_sha256":"22a5d9fa0099359391af5e31968a2a866472c59a91cf6e20cd5e40e071a77779"}