{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2016:3CY3M2DBVFEYBQ45FZAWUHCONI","short_pith_number":"pith:3CY3M2DB","canonical_record":{"source":{"id":"1606.02731","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2016-06-08T20:01:15Z","cross_cats_sorted":[],"title_canon_sha256":"8dc442622f0741ae18f8aab396121f34018ec501b3901988f2ee353981f772c7","abstract_canon_sha256":"e3d3c332553ae50be8bbfb4e4076a91c8c58c32def020daff9c0a9ac9b990637"},"schema_version":"1.0"},"canonical_sha256":"d8b1b66861a94980c39d2e416a1c4e6a14b506125fd3820e1802dafc2166fbd7","source":{"kind":"arxiv","id":"1606.02731","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1606.02731","created_at":"2026-05-18T01:12:02Z"},{"alias_kind":"arxiv_version","alias_value":"1606.02731v1","created_at":"2026-05-18T01:12:02Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1606.02731","created_at":"2026-05-18T01:12:02Z"},{"alias_kind":"pith_short_12","alias_value":"3CY3M2DBVFEY","created_at":"2026-05-18T12:29:55Z"},{"alias_kind":"pith_short_16","alias_value":"3CY3M2DBVFEYBQ45","created_at":"2026-05-18T12:29:55Z"},{"alias_kind":"pith_short_8","alias_value":"3CY3M2DB","created_at":"2026-05-18T12:29:55Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2016:3CY3M2DBVFEYBQ45FZAWUHCONI","target":"record","payload":{"canonical_record":{"source":{"id":"1606.02731","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2016-06-08T20:01:15Z","cross_cats_sorted":[],"title_canon_sha256":"8dc442622f0741ae18f8aab396121f34018ec501b3901988f2ee353981f772c7","abstract_canon_sha256":"e3d3c332553ae50be8bbfb4e4076a91c8c58c32def020daff9c0a9ac9b990637"},"schema_version":"1.0"},"canonical_sha256":"d8b1b66861a94980c39d2e416a1c4e6a14b506125fd3820e1802dafc2166fbd7","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:12:02.133151Z","signature_b64":"i6138loiwftOGgTIQ6Ay46tDYUPrkA1sYoshltgJH0SRFNgAIvMixFchqN0CP4vBHu9YVlmOFDIy9BvIBDjHDA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"d8b1b66861a94980c39d2e416a1c4e6a14b506125fd3820e1802dafc2166fbd7","last_reissued_at":"2026-05-18T01:12:02.132721Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:12:02.132721Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1606.02731","source_version":1,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T01:12:02Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"t4XI22YXEJES36kaZRjddXMqJPyi6T8UTASiEQGvSuStmgHFtySKzAa7IkyTcBa2ZXWqo+NOzRqvF+EF5t9QCw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-04T18:14:54.369069Z"},"content_sha256":"4c630dd0b105207aeb3e697ff684e3056d056696d02a23333cae5088783c3cc7","schema_version":"1.0","event_id":"sha256:4c630dd0b105207aeb3e697ff684e3056d056696d02a23333cae5088783c3cc7"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2016:3CY3M2DBVFEYBQ45FZAWUHCONI","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Large enhancement in high-energy photoionization of Fe XVII and missing continuum plasma opacity","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.SR","authors_text":"Anil K. Pradhan (The Ohio State University), Sultana N. Nahar","submitted_at":"2016-06-08T20:01:15Z","abstract_excerpt":"Aimed at solving the outstanding problem of solar opacity, and radiation transport plasma models in general, we report substantial photoabsorption in the high-energy regime due to atomic core photo-excitations not heretofore considered. In extensive R-Matrix calculations of unprecedented complexity for an important iron ion Fe xvii (Fe$^{16+}$), with a wave function expansion of 99 Fe xviii (Fe$^{17+}$) LS core states from $n \\leq 4$ complexes (equivalent to 218 fine structure levels), we find: i) up to orders of magnitude enhancement in background photoionization cross sections, in addition t"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1606.02731","kind":"arxiv","version":1},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"references":{"count":0,"sample":[],"resolved_work":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","internal_anchors":0},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"},"verdict_id":null},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T01:12:02Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"vu8WUXThr8rTdSj4NQxqnbpaE62msqXIBOt6hmAdM9Ydl4wzf0A65T8/ZfT1BGW02Ya5BkdbdgbZEKZGCqlUBw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-04T18:14:54.369450Z"},"content_sha256":"d7cc54918e31fa5163d5ce8a56e4cfea933b20b03b0c8b88276641b9792c22d1","schema_version":"1.0","event_id":"sha256:d7cc54918e31fa5163d5ce8a56e4cfea933b20b03b0c8b88276641b9792c22d1"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/3CY3M2DBVFEYBQ45FZAWUHCONI/bundle.json","state_url":"https://pith.science/pith/3CY3M2DBVFEYBQ45FZAWUHCONI/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/3CY3M2DBVFEYBQ45FZAWUHCONI/bundle.json","status":"primary"}],"public_keys":[{"key_id":"pith-v1-2026-05","algorithm":"ed25519","format":"raw","public_key_b64":"stVStoiQhXFxp4s2pdzPNoqVNBMojDU/fJ2db5S3CbM=","public_key_hex":"b2d552b68890857171a78b36a5dccf368a953413288c353f7c9d9d6f94b709b3","fingerprint_sha256_b32_first128bits":"RVFV5Z2OI2J3ZUO7ERDEBCYNKS","fingerprint_sha256_hex":"8d4b5ee74e4693bcd1df2446408b0d54","rotates_at":null,"url":"https://pith.science/pith-signing-key.json","notes":"Pith uses this Ed25519 key to sign canonical record SHA-256 digests. Verify with: ed25519_verify(public_key, message=canonical_sha256_bytes, signature=base64decode(signature_b64))."}],"merge_version":"pith-open-graph-merge-v1","built_at":"2026-06-04T18:14:54Z","links":{"resolver":"https://pith.science/pith/3CY3M2DBVFEYBQ45FZAWUHCONI","bundle":"https://pith.science/pith/3CY3M2DBVFEYBQ45FZAWUHCONI/bundle.json","state":"https://pith.science/pith/3CY3M2DBVFEYBQ45FZAWUHCONI/state.json","well_known_bundle":"https://pith.science/.well-known/pith/3CY3M2DBVFEYBQ45FZAWUHCONI/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2016:3CY3M2DBVFEYBQ45FZAWUHCONI","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":"e3d3c332553ae50be8bbfb4e4076a91c8c58c32def020daff9c0a9ac9b990637","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2016-06-08T20:01:15Z","title_canon_sha256":"8dc442622f0741ae18f8aab396121f34018ec501b3901988f2ee353981f772c7"},"schema_version":"1.0","source":{"id":"1606.02731","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1606.02731","created_at":"2026-05-18T01:12:02Z"},{"alias_kind":"arxiv_version","alias_value":"1606.02731v1","created_at":"2026-05-18T01:12:02Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1606.02731","created_at":"2026-05-18T01:12:02Z"},{"alias_kind":"pith_short_12","alias_value":"3CY3M2DBVFEY","created_at":"2026-05-18T12:29:55Z"},{"alias_kind":"pith_short_16","alias_value":"3CY3M2DBVFEYBQ45","created_at":"2026-05-18T12:29:55Z"},{"alias_kind":"pith_short_8","alias_value":"3CY3M2DB","created_at":"2026-05-18T12:29:55Z"}],"graph_snapshots":[{"event_id":"sha256:d7cc54918e31fa5163d5ce8a56e4cfea933b20b03b0c8b88276641b9792c22d1","target":"graph","created_at":"2026-05-18T01:12:02Z","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":"Aimed at solving the outstanding problem of solar opacity, and radiation transport plasma models in general, we report substantial photoabsorption in the high-energy regime due to atomic core photo-excitations not heretofore considered. In extensive R-Matrix calculations of unprecedented complexity for an important iron ion Fe xvii (Fe$^{16+}$), with a wave function expansion of 99 Fe xviii (Fe$^{17+}$) LS core states from $n \\leq 4$ complexes (equivalent to 218 fine structure levels), we find: i) up to orders of magnitude enhancement in background photoionization cross sections, in addition t","authors_text":"Anil K. Pradhan (The Ohio State University), Sultana N. Nahar","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2016-06-08T20:01:15Z","title":"Large enhancement in high-energy photoionization of Fe XVII and missing continuum plasma opacity"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1606.02731","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":"sha256:4c630dd0b105207aeb3e697ff684e3056d056696d02a23333cae5088783c3cc7","target":"record","created_at":"2026-05-18T01:12:02Z","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":"e3d3c332553ae50be8bbfb4e4076a91c8c58c32def020daff9c0a9ac9b990637","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2016-06-08T20:01:15Z","title_canon_sha256":"8dc442622f0741ae18f8aab396121f34018ec501b3901988f2ee353981f772c7"},"schema_version":"1.0","source":{"id":"1606.02731","kind":"arxiv","version":1}},"canonical_sha256":"d8b1b66861a94980c39d2e416a1c4e6a14b506125fd3820e1802dafc2166fbd7","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"d8b1b66861a94980c39d2e416a1c4e6a14b506125fd3820e1802dafc2166fbd7","first_computed_at":"2026-05-18T01:12:02.132721Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:12:02.132721Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"i6138loiwftOGgTIQ6Ay46tDYUPrkA1sYoshltgJH0SRFNgAIvMixFchqN0CP4vBHu9YVlmOFDIy9BvIBDjHDA==","signature_status":"signed_v1","signed_at":"2026-05-18T01:12:02.133151Z","signed_message":"canonical_sha256_bytes"},"source_id":"1606.02731","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:4c630dd0b105207aeb3e697ff684e3056d056696d02a23333cae5088783c3cc7","sha256:d7cc54918e31fa5163d5ce8a56e4cfea933b20b03b0c8b88276641b9792c22d1"],"state_sha256":"553197c877dad3eee5628b1b246269d206a3ab3ca950108d302ffb649f0d5837"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"uPqZLCdxFqdYp+nsToSK10iSVxCItTU6FVd40kjNwpi4CbTzKmaEfLgICmwalH31FgtpM7KJxGoyVJGPJwrBDQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-04T18:14:54.371605Z","bundle_sha256":"ab925d49a3924df32e98572f76cc50f08da9116dd5383d70c02209ccdf8c6b1c"}}