{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2022:6X3QLXCEIUT7YS3WGV5H2XKZHB","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":"afdb3342037a511f49401970f79a9c9d5362a1877c35e75af49b42e9ddb77faa","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.GA","submitted_at":"2022-11-03T11:01:06Z","title_canon_sha256":"ef832f034208a44a9a2a3925b72af5759f136f366c7444fe371e74ce86a48ea1"},"schema_version":"1.0","source":{"id":"2211.01708","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2211.01708","created_at":"2026-07-05T05:12:59Z"},{"alias_kind":"arxiv_version","alias_value":"2211.01708v1","created_at":"2026-07-05T05:12:59Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2211.01708","created_at":"2026-07-05T05:12:59Z"},{"alias_kind":"pith_short_12","alias_value":"6X3QLXCEIUT7","created_at":"2026-07-05T05:12:59Z"},{"alias_kind":"pith_short_16","alias_value":"6X3QLXCEIUT7YS3W","created_at":"2026-07-05T05:12:59Z"},{"alias_kind":"pith_short_8","alias_value":"6X3QLXCE","created_at":"2026-07-05T05:12:59Z"}],"graph_snapshots":[{"event_id":"sha256:248f92e3c2d99c6513d36efcbf523e05c68bde4fb175ef9ae7c650c0af39c182","target":"graph","created_at":"2026-07-05T05:12:59Z","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/2211.01708/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We develop a simple analytic model for what happens when an O star (or compact cluster of OB stars) forms in a shock compressed layer and carves out an approximately circular hole in the layer, at the waist of a bipolar HII Region (HIIR). The model is characterised by three parameters: the half-thickness of the undisturbed layer, Zlay, the mean number-density of hydrogen molecules in the undisturbed layer, nlay, and the (collective) ionising output of the star(s), NdotLyC. The radius of the circular hole is given by WIF ~ 3.8 pc [Zlay/0.1pc]^{-1/6} [nlay/10^4cm^{-3}]^{-1/3} [NdotLyC/10^{49} s^","authors_text":"Anthony Whitworth, Felix Priestley, Samuel Geen","cross_cats":[],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.GA","submitted_at":"2022-11-03T11:01:06Z","title":"Ionising feedback from an O star formed in a shock-compressed layer"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2211.01708","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":"sha256:7447c95c0956f9898c4f8ed21ee470ae2ff1ea597c7a33b5ee9782c1663daf83","target":"record","created_at":"2026-07-05T05:12:59Z","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":"afdb3342037a511f49401970f79a9c9d5362a1877c35e75af49b42e9ddb77faa","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.GA","submitted_at":"2022-11-03T11:01:06Z","title_canon_sha256":"ef832f034208a44a9a2a3925b72af5759f136f366c7444fe371e74ce86a48ea1"},"schema_version":"1.0","source":{"id":"2211.01708","kind":"arxiv","version":1}},"canonical_sha256":"f5f705dc444527fc4b76357a7d5d59387524c037ccc17ebeb83b09bce2a566e2","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"f5f705dc444527fc4b76357a7d5d59387524c037ccc17ebeb83b09bce2a566e2","first_computed_at":"2026-07-05T05:12:59.349310Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T05:12:59.349310Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"DAu/2l2tqjNsTPjD9oYjsAkmYFDavymtY03oewSXLj1tgMmCCsA0Yc2nwWMV7LxEYqSgRBFfMg7dy2CyASOhDA==","signature_status":"signed_v1","signed_at":"2026-07-05T05:12:59.349739Z","signed_message":"canonical_sha256_bytes"},"source_id":"2211.01708","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:7447c95c0956f9898c4f8ed21ee470ae2ff1ea597c7a33b5ee9782c1663daf83","sha256:248f92e3c2d99c6513d36efcbf523e05c68bde4fb175ef9ae7c650c0af39c182"],"state_sha256":"520abeb71d650213f183afbeb1ab0f4e045605c1453e02382a143a0276c78821"}