{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2020:HG4OA2I4M7JGJT5BQRYUL5HEXK","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":"b481bd5724060540d2dbceb0680ec5d3c81a88d2c8cdcb163516e2c8113f9d42","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2020-12-10T18:18:50Z","title_canon_sha256":"93d45594883b54189d86a8b3b17cca9d670ae97863b1b9fdcdae14de48cca7af"},"schema_version":"1.0","source":{"id":"2012.05861","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2012.05861","created_at":"2026-07-05T02:01:18Z"},{"alias_kind":"arxiv_version","alias_value":"2012.05861v1","created_at":"2026-07-05T02:01:18Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2012.05861","created_at":"2026-07-05T02:01:18Z"},{"alias_kind":"pith_short_12","alias_value":"HG4OA2I4M7JG","created_at":"2026-07-05T02:01:18Z"},{"alias_kind":"pith_short_16","alias_value":"HG4OA2I4M7JGJT5B","created_at":"2026-07-05T02:01:18Z"},{"alias_kind":"pith_short_8","alias_value":"HG4OA2I4","created_at":"2026-07-05T02:01:18Z"}],"graph_snapshots":[{"event_id":"sha256:4449e908bddc14afe25c5515ed32b423943905a07a5ca7d23092ac1899da498b","target":"graph","created_at":"2026-07-05T02:01:18Z","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/2012.05861/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We present a new, uniform analysis of the HI transmitted flux (F) and HI column density (N(HI)) distribution in the low-density IGM as a function of redshift z for 0<z<3.6 using 55 HST/COS FUV (Delta(z)=7.2 at z<0.5), five HST/STIS+COS NUV (Delta(z)=1.3 at z~1) and 24 VLT/UVES and Keck/HIRES (Delta(z)=11.6 at 1.7<z<3.6) AGN spectra. We performed a consistent, uniform Voigt profile analysis to combine spectra taken with different instruments, to reduce systematics and to remove metal-line contamination. We confirm previously known conclusions on firmer quantitative grounds in particular by impr","authors_text":"Andrew J. Fox, Bart P. Wakker, Ben E. Rosenwasser, Blair D. Savage, Fahad Nasir, James S. Bolton, Jane C. Charlton, Martin G. Haehnelt, Matteo Viel, Robert F. Carswell, Tae-Sun Kim","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2020-12-10T18:18:50Z","title":"The evolution of the low-density HI intergalactic medium from z=3.6 to 0: Data, transmitted flux and HI column density"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2012.05861","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":"sha256:3a98478443ea3cf3a136370851117ee498a6ec42e031f40fac9590c2e5a4a14a","target":"record","created_at":"2026-07-05T02:01:18Z","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":"b481bd5724060540d2dbceb0680ec5d3c81a88d2c8cdcb163516e2c8113f9d42","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2020-12-10T18:18:50Z","title_canon_sha256":"93d45594883b54189d86a8b3b17cca9d670ae97863b1b9fdcdae14de48cca7af"},"schema_version":"1.0","source":{"id":"2012.05861","kind":"arxiv","version":1}},"canonical_sha256":"39b8e0691c67d264cfa1847145f4e4ba87f6c2dc02097bed069e125cf5908ba9","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"39b8e0691c67d264cfa1847145f4e4ba87f6c2dc02097bed069e125cf5908ba9","first_computed_at":"2026-07-05T02:01:18.765547Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T02:01:18.765547Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"jlTJ1wH/TuiNnmsi+dnNOIgCEJCer00dTNvjFrSME8zUVeWB3UKf3ye0MepUDWePrbb7raIQBKh4CHv3Y3e9Bg==","signature_status":"signed_v1","signed_at":"2026-07-05T02:01:18.765929Z","signed_message":"canonical_sha256_bytes"},"source_id":"2012.05861","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:3a98478443ea3cf3a136370851117ee498a6ec42e031f40fac9590c2e5a4a14a","sha256:4449e908bddc14afe25c5515ed32b423943905a07a5ca7d23092ac1899da498b"],"state_sha256":"f4a06ff65a0fe243000b3ac22f514a6f87ce7da4aa88ae54ae67270821c3e9cb"}