{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:UVBM2UZM76UBNOC277TUPAH3L5","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":"01f7d834234d74b85091d1b4f1c9200a2a80256e0d8f01fe52071d087b80555e","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2018-03-12T18:00:02Z","title_canon_sha256":"64c34cbe1de86ff0828131813f817286bf65e3c62c90e795a8e9850bcc0d6044"},"schema_version":"1.0","source":{"id":"1803.04421","kind":"arxiv","version":3}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1803.04421","created_at":"2026-05-18T00:11:05Z"},{"alias_kind":"arxiv_version","alias_value":"1803.04421v3","created_at":"2026-05-18T00:11:05Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1803.04421","created_at":"2026-05-18T00:11:05Z"},{"alias_kind":"pith_short_12","alias_value":"UVBM2UZM76UB","created_at":"2026-05-18T12:32:56Z"},{"alias_kind":"pith_short_16","alias_value":"UVBM2UZM76UBNOC2","created_at":"2026-05-18T12:32:56Z"},{"alias_kind":"pith_short_8","alias_value":"UVBM2UZM","created_at":"2026-05-18T12:32:56Z"}],"graph_snapshots":[{"event_id":"sha256:e18bfb4a65d2c2919222e006499fdf291fa4a58ab48c3488603f2b42db031f4a","target":"graph","created_at":"2026-05-18T00:11:05Z","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":"The observed delay-time distribution (DTD) of Type-Ia supernovae (SNe Ia) is a valuable probe of SN Ia progenitors and physics, and of the role of SNe Ia in cosmic metal enrichment. The SN Ia rate in galaxy clusters as a function of cluster redshift is an almost-direct measure of the DTD, but current estimates have been limited out to a mean redshift z=1.1, corresponding to time delays, after cluster star-formation, of over 3.2 Gyr. We analyze data from a Hubble Space Telescope monitoring project of 12 galaxy clusters at z=1.13-1.75, where we discover 29 SNe, and present their multi-band light","authors_text":"Dan Maoz, Matan Friedmann","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2018-03-12T18:00:02Z","title":"The rate of Type-Ia supernovae in galaxy clusters and the delay-time distribution out to redshift 1.75"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1803.04421","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":"sha256:1b668b7b0a4e505b014428dd852a78fd50f31f26451607b9461a0f3e23dd4387","target":"record","created_at":"2026-05-18T00:11:05Z","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":"01f7d834234d74b85091d1b4f1c9200a2a80256e0d8f01fe52071d087b80555e","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2018-03-12T18:00:02Z","title_canon_sha256":"64c34cbe1de86ff0828131813f817286bf65e3c62c90e795a8e9850bcc0d6044"},"schema_version":"1.0","source":{"id":"1803.04421","kind":"arxiv","version":3}},"canonical_sha256":"a542cd532cffa816b85affe74780fb5f788e2509dd8e721886659adca314da2f","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"a542cd532cffa816b85affe74780fb5f788e2509dd8e721886659adca314da2f","first_computed_at":"2026-05-18T00:11:05.823906Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:11:05.823906Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"pYzyul5iTEm+PWXSUaKp36cAq3hiAU8JKi084Ojdbe58i5enKmp/ulYf5vxx0MNppSAco+yyslbOfwv+GDRdDQ==","signature_status":"signed_v1","signed_at":"2026-05-18T00:11:05.824536Z","signed_message":"canonical_sha256_bytes"},"source_id":"1803.04421","source_kind":"arxiv","source_version":3}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:1b668b7b0a4e505b014428dd852a78fd50f31f26451607b9461a0f3e23dd4387","sha256:e18bfb4a65d2c2919222e006499fdf291fa4a58ab48c3488603f2b42db031f4a"],"state_sha256":"a3f702019b58b7366391f0ea05be30ea034ad8b08089bfac5cf639a7b852654b"}