{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:Z65MED4RLVHZBXYQC5EKYIUR6E","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":"8b27a993b48aaf4f8fde18a3ce3a73edc05aacb7dafae937d6e8f1b1f8145d85","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2018-09-12T14:31:33Z","title_canon_sha256":"dab19ecaf197dbbea11c4ff113231ce63b4f03ac46117d353cef0a1f02c27f4e"},"schema_version":"1.0","source":{"id":"1809.04484","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1809.04484","created_at":"2026-05-18T00:05:21Z"},{"alias_kind":"arxiv_version","alias_value":"1809.04484v2","created_at":"2026-05-18T00:05:21Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1809.04484","created_at":"2026-05-18T00:05:21Z"},{"alias_kind":"pith_short_12","alias_value":"Z65MED4RLVHZ","created_at":"2026-05-18T12:33:04Z"},{"alias_kind":"pith_short_16","alias_value":"Z65MED4RLVHZBXYQ","created_at":"2026-05-18T12:33:04Z"},{"alias_kind":"pith_short_8","alias_value":"Z65MED4R","created_at":"2026-05-18T12:33:04Z"}],"graph_snapshots":[{"event_id":"sha256:2c9a1d98aaf946ef2c6ab918aff8d523e4b81efc5bb2241ac15dc6c1ff1bc341","target":"graph","created_at":"2026-05-18T00:05:21Z","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 have measured the times of onset of recent fadings in four R CrB stars -- V854 Cen, RY Sgr, R CrB, and S Aps. These times continue to be locked to the stars' pulsation periods, though with some scatter. In RY Sgr, the onsets of fading tend to occur at or a few days after pulsation maximum. We have studied the pulsation properties of RY Sgr through its recent long maximum using (O-C) analysis and wavelet analysis. The period \"wanders\" by a few percent. This wandering can be modelled by random cycle-to-cycle period fluctuations, as in some other types of pulsating stars. The pulsation amplitu","authors_text":"John R. Percy, Kevin H. Dembski","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2018-09-12T14:31:33Z","title":"A Study of Pulsation and Fadings in some R Coronae Borealis Stars"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1809.04484","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":"sha256:5f35352587358cb69abfb0214239bf7c53cb88d4d475f86dd5d77f1a033985dc","target":"record","created_at":"2026-05-18T00:05:21Z","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":"8b27a993b48aaf4f8fde18a3ce3a73edc05aacb7dafae937d6e8f1b1f8145d85","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2018-09-12T14:31:33Z","title_canon_sha256":"dab19ecaf197dbbea11c4ff113231ce63b4f03ac46117d353cef0a1f02c27f4e"},"schema_version":"1.0","source":{"id":"1809.04484","kind":"arxiv","version":2}},"canonical_sha256":"cfbac20f915d4f90df101748ac2291f126a8192a614f56d0d3b23b33ba822d4c","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"cfbac20f915d4f90df101748ac2291f126a8192a614f56d0d3b23b33ba822d4c","first_computed_at":"2026-05-18T00:05:21.297269Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:05:21.297269Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"KEboWKQnYRZAs6Uq4I9yHNhatPQffN5xz4rm24Bp8njbCM3ospDs+jWy24Cr8i+L4H9jNSnFuR2ip/uvgc7KDg==","signature_status":"signed_v1","signed_at":"2026-05-18T00:05:21.297828Z","signed_message":"canonical_sha256_bytes"},"source_id":"1809.04484","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:5f35352587358cb69abfb0214239bf7c53cb88d4d475f86dd5d77f1a033985dc","sha256:2c9a1d98aaf946ef2c6ab918aff8d523e4b81efc5bb2241ac15dc6c1ff1bc341"],"state_sha256":"8b11a92a03968af7e8520a127e36e6ae167fac90b73d2a9ccd0ce71228e5704d"}