{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2012:PG476NAEB2I2KRMLUTLTSK2DON","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":"9c4e60a83e49be5c0693a2c83e74139a42ef5325ffe9aa1ed7ba2c1b1a9c5763","cross_cats_sorted":["astro-ph.EP"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2012-08-24T12:25:55Z","title_canon_sha256":"5d7b8a2f1f03ec007dfdca6314878cc7960c1158e1b274876072aa37026f3d14"},"schema_version":"1.0","source":{"id":"1208.4959","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1208.4959","created_at":"2026-05-18T01:54:58Z"},{"alias_kind":"arxiv_version","alias_value":"1208.4959v1","created_at":"2026-05-18T01:54:58Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1208.4959","created_at":"2026-05-18T01:54:58Z"},{"alias_kind":"pith_short_12","alias_value":"PG476NAEB2I2","created_at":"2026-05-18T12:27:18Z"},{"alias_kind":"pith_short_16","alias_value":"PG476NAEB2I2KRML","created_at":"2026-05-18T12:27:18Z"},{"alias_kind":"pith_short_8","alias_value":"PG476NAE","created_at":"2026-05-18T12:27:18Z"}],"graph_snapshots":[{"event_id":"sha256:2558054deaf6031361b18042c0c02b6366eee6c1da5710b523cc1d0d14d9217e","target":"graph","created_at":"2026-05-18T01:54:58Z","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":"Context. Planets are thought to eventually form from the mostly gaseous (~99% of the mass) disks around young stars. The density structure and chemical composition of protoplanetary disks are affected by the incident radiation field at optical, FUV, and X-ray wavelengths, as well as by the dust properties.\n  Aims. The effect of FUV and X-rays on the disk structure and the gas chemical composition are investigated. This work forms the basis of a second paper, which discusses the impact on diagnostic lines of, e.g., C+, O, H2O, and Ne+ observed with facilities such as Spitzer and Herschel.\n  Met","authors_text":"G. Aresu, I. Kamp, M. Spaans, P. Woitke, R. Meijerink, W.-F. Thi","cross_cats":["astro-ph.EP"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2012-08-24T12:25:55Z","title":"FUV and X-ray irradiated protoplanetary disks: a grid of models I. The disk structure"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1208.4959","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:e073e8f6ddd2329a8c89f70f50f7ec17f4606fa53b58e374dc26fd936be2180d","target":"record","created_at":"2026-05-18T01:54:58Z","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":"9c4e60a83e49be5c0693a2c83e74139a42ef5325ffe9aa1ed7ba2c1b1a9c5763","cross_cats_sorted":["astro-ph.EP"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2012-08-24T12:25:55Z","title_canon_sha256":"5d7b8a2f1f03ec007dfdca6314878cc7960c1158e1b274876072aa37026f3d14"},"schema_version":"1.0","source":{"id":"1208.4959","kind":"arxiv","version":1}},"canonical_sha256":"79b9ff34040e91a5458ba4d7392b437371c715d0228dde2091b875aaac12a2ca","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"79b9ff34040e91a5458ba4d7392b437371c715d0228dde2091b875aaac12a2ca","first_computed_at":"2026-05-18T01:54:58.651175Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:54:58.651175Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"0TIq21yQeCtAR7DtSI4D/P2laMHLmwPIdNAkZPBvwB7vF4HhtYTpxY58h0X78qepSA5LRmFHrNW7BiPFWJ2MDQ==","signature_status":"signed_v1","signed_at":"2026-05-18T01:54:58.651828Z","signed_message":"canonical_sha256_bytes"},"source_id":"1208.4959","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:e073e8f6ddd2329a8c89f70f50f7ec17f4606fa53b58e374dc26fd936be2180d","sha256:2558054deaf6031361b18042c0c02b6366eee6c1da5710b523cc1d0d14d9217e"],"state_sha256":"9a5c75683e7848e3c687010543ca4bd5b566668007c6404402570da353b82b83"}