{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2017:IN2O2IHFKNWN2QTRYFCDJI6XGJ","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":"3e5f455ec9539d521efdca143cef998fbb341f0823eeba9de91136ede7a330c5","cross_cats_sorted":["astro-ph.GA"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2017-10-27T14:49:59Z","title_canon_sha256":"639dbc5a7d715284db5e7fe120e753704f7d6e079b1d99c7d9879f66650a650a"},"schema_version":"1.0","source":{"id":"1710.10180","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1710.10180","created_at":"2026-05-18T00:31:54Z"},{"alias_kind":"arxiv_version","alias_value":"1710.10180v1","created_at":"2026-05-18T00:31:54Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1710.10180","created_at":"2026-05-18T00:31:54Z"},{"alias_kind":"pith_short_12","alias_value":"IN2O2IHFKNWN","created_at":"2026-05-18T12:31:21Z"},{"alias_kind":"pith_short_16","alias_value":"IN2O2IHFKNWN2QTR","created_at":"2026-05-18T12:31:21Z"},{"alias_kind":"pith_short_8","alias_value":"IN2O2IHF","created_at":"2026-05-18T12:31:21Z"}],"graph_snapshots":[{"event_id":"sha256:8c0469b6069d959372386520cdfbeb7c2f77f641a67f85bf11dbd37c9cb1d719","target":"graph","created_at":"2026-05-18T00:31:54Z","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":"Quasars are complex sources, characterized by broad band spectra from radio through optical to X-ray band, with numerous emission and absorption features. However, Boroson & Green (1992) used Principal Component Analysis (PCA), and with this analysis they were able to show significant correlations between the measured parameters. The leading component, related to Eigenvector 1 (EV1) was dominated by the anticorrelation between the Fe${\\mathrm{II}}$ optical emission and [OIII] line and EV1 alone contained 30% of the total variance. It opened a way in defining a quasar main sequence, in close an","authors_text":"Bozena Czerny, Conor Wildy, Swayamtrupta Panda","cross_cats":["astro-ph.GA"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2017-10-27T14:49:59Z","title":"The physical driver of the optical Eigenvector 1 in Quasar Main Sequence"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1710.10180","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:e8d5a0fd6a9c37db9fe50550793a220c5dc4c3d5176113452915e4ba92a31494","target":"record","created_at":"2026-05-18T00:31:54Z","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":"3e5f455ec9539d521efdca143cef998fbb341f0823eeba9de91136ede7a330c5","cross_cats_sorted":["astro-ph.GA"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2017-10-27T14:49:59Z","title_canon_sha256":"639dbc5a7d715284db5e7fe120e753704f7d6e079b1d99c7d9879f66650a650a"},"schema_version":"1.0","source":{"id":"1710.10180","kind":"arxiv","version":1}},"canonical_sha256":"4374ed20e5536cdd4271c14434a3d73273e1a2a1c98104d578b338697469e700","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"4374ed20e5536cdd4271c14434a3d73273e1a2a1c98104d578b338697469e700","first_computed_at":"2026-05-18T00:31:54.583158Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:31:54.583158Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"REwmXw0qY4B8o1PhYSS1DPJ2Z/OXFA0frRG5S5snGrLbDhYPTOv2orUIByxntr35lINywuHSJ7a6w/8nVTwrAw==","signature_status":"signed_v1","signed_at":"2026-05-18T00:31:54.583833Z","signed_message":"canonical_sha256_bytes"},"source_id":"1710.10180","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:e8d5a0fd6a9c37db9fe50550793a220c5dc4c3d5176113452915e4ba92a31494","sha256:8c0469b6069d959372386520cdfbeb7c2f77f641a67f85bf11dbd37c9cb1d719"],"state_sha256":"37af95ffc8e50b9c829100c13061040a03025ab60fc2a608677ba0d734913de9"}