{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2015:BYSROFYKDG75ZLDCNTRUKTRRQR","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":"3cf7d6872c97c85d026dfcfd338c7cf5aad9d60271a1331b898b7451337d52e4","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2015-11-04T20:29:07Z","title_canon_sha256":"e82cc797c5b2df6cbd38e7cdef24fab695d71429d32c9b2de26dd0c5c678d985"},"schema_version":"1.0","source":{"id":"1511.01466","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1511.01466","created_at":"2026-05-18T01:12:49Z"},{"alias_kind":"arxiv_version","alias_value":"1511.01466v1","created_at":"2026-05-18T01:12:49Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1511.01466","created_at":"2026-05-18T01:12:49Z"},{"alias_kind":"pith_short_12","alias_value":"BYSROFYKDG75","created_at":"2026-05-18T12:29:14Z"},{"alias_kind":"pith_short_16","alias_value":"BYSROFYKDG75ZLDC","created_at":"2026-05-18T12:29:14Z"},{"alias_kind":"pith_short_8","alias_value":"BYSROFYK","created_at":"2026-05-18T12:29:14Z"}],"graph_snapshots":[{"event_id":"sha256:df241b0130a2b0bb92d0da83b76165d484fef82c0d3b5ecf61c9714acf946e6d","target":"graph","created_at":"2026-05-18T01:12:49Z","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 estimate the LGRB progenitor rate using our recent work on the effects of environmental metallically on LGRB formation in concert with SNe statistics via an approach patterned loosely off the Drake equation. Beginning with the cosmic star-formation history, we consider the expected number of broad-line Type Ic events (the SNe type associated with LGRBs) that are in low metallicity host environments adjusted by the contribution of high metallicity host environments at a much reduced rate. We then compare this estimate to the observed LGRB rate corrected for instrumental selection effects to ","authors_text":"J. F. Graham, P. Schady","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2015-11-04T20:29:07Z","title":"The Absolute Rate of LGRB Formation"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1511.01466","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":"sha256:970800a84cadea5cce744d04a3bafc25e3aab201c1aa28420259619e5e580f05","target":"record","created_at":"2026-05-18T01:12:49Z","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":"3cf7d6872c97c85d026dfcfd338c7cf5aad9d60271a1331b898b7451337d52e4","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2015-11-04T20:29:07Z","title_canon_sha256":"e82cc797c5b2df6cbd38e7cdef24fab695d71429d32c9b2de26dd0c5c678d985"},"schema_version":"1.0","source":{"id":"1511.01466","kind":"arxiv","version":1}},"canonical_sha256":"0e2517170a19bfdcac626ce3454e3184665272b52ebabf6f557102f085825d43","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"0e2517170a19bfdcac626ce3454e3184665272b52ebabf6f557102f085825d43","first_computed_at":"2026-05-18T01:12:49.530200Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:12:49.530200Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"DL88+vx2gf78FZUA3Pz6QdaIGwykiG/9yybGmobkVOIHpp40uy3eGQ5yzKASQY0e+NFbdJezap1mUqxz251+Bw==","signature_status":"signed_v1","signed_at":"2026-05-18T01:12:49.530585Z","signed_message":"canonical_sha256_bytes"},"source_id":"1511.01466","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:970800a84cadea5cce744d04a3bafc25e3aab201c1aa28420259619e5e580f05","sha256:df241b0130a2b0bb92d0da83b76165d484fef82c0d3b5ecf61c9714acf946e6d"],"state_sha256":"e07fd656c7ef8c7e880a88b9b73445ce216b37a7735c1bc319cec1f67f09e1cb"}