{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2023:6BLSTZYEE2DPE4FCDZ625SKWTX","short_pith_number":"pith:6BLSTZYE","canonical_record":{"source":{"id":"2311.17895","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2023-11-29T18:48:51Z","cross_cats_sorted":["astro-ph.GA"],"title_canon_sha256":"4c1534a7b9101ee4f0a12930eec58d03056a7f2bfd940abd050e311530ad824e","abstract_canon_sha256":"8c6d6041832dddb40daf16d543f0eac2bc90bab6fa4c13b14bced1bdb60f87cb"},"schema_version":"1.0"},"canonical_sha256":"f05729e7042686f270a21e7daec9569dce826fefa4bccb71d4b181c80946f3a9","source":{"kind":"arxiv","id":"2311.17895","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2311.17895","created_at":"2026-07-05T07:41:00Z"},{"alias_kind":"arxiv_version","alias_value":"2311.17895v2","created_at":"2026-07-05T07:41:00Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2311.17895","created_at":"2026-07-05T07:41:00Z"},{"alias_kind":"pith_short_12","alias_value":"6BLSTZYEE2DP","created_at":"2026-07-05T07:41:00Z"},{"alias_kind":"pith_short_16","alias_value":"6BLSTZYEE2DPE4FC","created_at":"2026-07-05T07:41:00Z"},{"alias_kind":"pith_short_8","alias_value":"6BLSTZYE","created_at":"2026-07-05T07:41:00Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2023:6BLSTZYEE2DPE4FCDZ625SKWTX","target":"record","payload":{"canonical_record":{"source":{"id":"2311.17895","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2023-11-29T18:48:51Z","cross_cats_sorted":["astro-ph.GA"],"title_canon_sha256":"4c1534a7b9101ee4f0a12930eec58d03056a7f2bfd940abd050e311530ad824e","abstract_canon_sha256":"8c6d6041832dddb40daf16d543f0eac2bc90bab6fa4c13b14bced1bdb60f87cb"},"schema_version":"1.0"},"canonical_sha256":"f05729e7042686f270a21e7daec9569dce826fefa4bccb71d4b181c80946f3a9","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T07:41:00.500174Z","signature_b64":"7DkbS4fg9YKbulVEBfEvGRr1Z620rSP0s980NdBYl/tmMM4cFK1vy6r409NwKhqbtxIW3RMuDeCkSAbpjZK2Bg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"f05729e7042686f270a21e7daec9569dce826fefa4bccb71d4b181c80946f3a9","last_reissued_at":"2026-07-05T07:41:00.499716Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T07:41:00.499716Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2311.17895","source_version":2,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-05T07:41:00Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"xgyg4k1v2+ZzMJVNvYLyCBx53YYjiolZ11o7AHW4ikNO2IjcFHjqgL0z7ky8rCnSKGmzKH9lM+fiIgmkcUTSBw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-04T23:48:53.623327Z"},"content_sha256":"d8283d84851fd2e96256a0b9ba83590c0ebb1e2a626747bcec37a4b94193ca7e","schema_version":"1.0","event_id":"sha256:d8283d84851fd2e96256a0b9ba83590c0ebb1e2a626747bcec37a4b94193ca7e"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2023:6BLSTZYEE2DPE4FCDZ625SKWTX","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Measurements of the Thermal and Ionization State of the Intergalactic Medium during the Cosmic Afternoon","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.GA"],"primary_cat":"astro-ph.CO","authors_text":"Jose O\\~norbe, Joseph F. Hennawi, Michael Walther, Teng Hu, Todd M. Tripp, Vikram Khaire, Zarija Lukic","submitted_at":"2023-11-29T18:48:51Z","abstract_excerpt":"We perform the first measurement of the thermal and ionization state of the intergalactic medium (IGM) across 0.9 < z < 1.5 using 301 \\lya absorption lines fitted from 12 HST STIS quasar spectra, with a total pathlength of \\Delta z=2.1. We employ the machine-learning-based inference method that uses joint b-N distributions obtained from \\lyaf decomposition. Our results show that the HI photoionization rates, \\Gamma, are in good agreement with the recent UV background synthesis models, with \\log (\\Gamma/s^{-1})={-11.79}^{0.18}_{-0.15}, -11.98}^{0.09}_{-0.09}, and {-12.32}^{0.10}_{-0.12} at z=1."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2311.17895","kind":"arxiv","version":2},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2311.17895/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"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":"2026-07-05T07:41:00Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"AXDXxWgDI40k7SMkadmwF8urPePilyHnBBf2ecyjZqCSGIg/s95UvQYK6w/dbpk5lVZjM3ocvZDl45gtYDtgAQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-04T23:48:53.623939Z"},"content_sha256":"18ac1e0849ef837d82a0dc5102efea53d3d9c770c25bae3ffea4c769f619a6c3","schema_version":"1.0","event_id":"sha256:18ac1e0849ef837d82a0dc5102efea53d3d9c770c25bae3ffea4c769f619a6c3"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/6BLSTZYEE2DPE4FCDZ625SKWTX/bundle.json","state_url":"https://pith.science/pith/6BLSTZYEE2DPE4FCDZ625SKWTX/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/6BLSTZYEE2DPE4FCDZ625SKWTX/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":"2026-08-04T23:48:53Z","links":{"resolver":"https://pith.science/pith/6BLSTZYEE2DPE4FCDZ625SKWTX","bundle":"https://pith.science/pith/6BLSTZYEE2DPE4FCDZ625SKWTX/bundle.json","state":"https://pith.science/pith/6BLSTZYEE2DPE4FCDZ625SKWTX/state.json","well_known_bundle":"https://pith.science/.well-known/pith/6BLSTZYEE2DPE4FCDZ625SKWTX/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2023:6BLSTZYEE2DPE4FCDZ625SKWTX","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":"8c6d6041832dddb40daf16d543f0eac2bc90bab6fa4c13b14bced1bdb60f87cb","cross_cats_sorted":["astro-ph.GA"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2023-11-29T18:48:51Z","title_canon_sha256":"4c1534a7b9101ee4f0a12930eec58d03056a7f2bfd940abd050e311530ad824e"},"schema_version":"1.0","source":{"id":"2311.17895","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2311.17895","created_at":"2026-07-05T07:41:00Z"},{"alias_kind":"arxiv_version","alias_value":"2311.17895v2","created_at":"2026-07-05T07:41:00Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2311.17895","created_at":"2026-07-05T07:41:00Z"},{"alias_kind":"pith_short_12","alias_value":"6BLSTZYEE2DP","created_at":"2026-07-05T07:41:00Z"},{"alias_kind":"pith_short_16","alias_value":"6BLSTZYEE2DPE4FC","created_at":"2026-07-05T07:41:00Z"},{"alias_kind":"pith_short_8","alias_value":"6BLSTZYE","created_at":"2026-07-05T07:41:00Z"}],"graph_snapshots":[{"event_id":"sha256:18ac1e0849ef837d82a0dc5102efea53d3d9c770c25bae3ffea4c769f619a6c3","target":"graph","created_at":"2026-07-05T07:41:00Z","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/2311.17895/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We perform the first measurement of the thermal and ionization state of the intergalactic medium (IGM) across 0.9 < z < 1.5 using 301 \\lya absorption lines fitted from 12 HST STIS quasar spectra, with a total pathlength of \\Delta z=2.1. We employ the machine-learning-based inference method that uses joint b-N distributions obtained from \\lyaf decomposition. Our results show that the HI photoionization rates, \\Gamma, are in good agreement with the recent UV background synthesis models, with \\log (\\Gamma/s^{-1})={-11.79}^{0.18}_{-0.15}, -11.98}^{0.09}_{-0.09}, and {-12.32}^{0.10}_{-0.12} at z=1.","authors_text":"Jose O\\~norbe, Joseph F. Hennawi, Michael Walther, Teng Hu, Todd M. Tripp, Vikram Khaire, Zarija Lukic","cross_cats":["astro-ph.GA"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2023-11-29T18:48:51Z","title":"Measurements of the Thermal and Ionization State of the Intergalactic Medium during the Cosmic Afternoon"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2311.17895","kind":"arxiv","version":2},"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:d8283d84851fd2e96256a0b9ba83590c0ebb1e2a626747bcec37a4b94193ca7e","target":"record","created_at":"2026-07-05T07:41:00Z","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":"8c6d6041832dddb40daf16d543f0eac2bc90bab6fa4c13b14bced1bdb60f87cb","cross_cats_sorted":["astro-ph.GA"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2023-11-29T18:48:51Z","title_canon_sha256":"4c1534a7b9101ee4f0a12930eec58d03056a7f2bfd940abd050e311530ad824e"},"schema_version":"1.0","source":{"id":"2311.17895","kind":"arxiv","version":2}},"canonical_sha256":"f05729e7042686f270a21e7daec9569dce826fefa4bccb71d4b181c80946f3a9","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"f05729e7042686f270a21e7daec9569dce826fefa4bccb71d4b181c80946f3a9","first_computed_at":"2026-07-05T07:41:00.499716Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T07:41:00.499716Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"7DkbS4fg9YKbulVEBfEvGRr1Z620rSP0s980NdBYl/tmMM4cFK1vy6r409NwKhqbtxIW3RMuDeCkSAbpjZK2Bg==","signature_status":"signed_v1","signed_at":"2026-07-05T07:41:00.500174Z","signed_message":"canonical_sha256_bytes"},"source_id":"2311.17895","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:d8283d84851fd2e96256a0b9ba83590c0ebb1e2a626747bcec37a4b94193ca7e","sha256:18ac1e0849ef837d82a0dc5102efea53d3d9c770c25bae3ffea4c769f619a6c3"],"state_sha256":"ae91ce8999ea6a0e08fa44f95e3b9fe2d2d2bc6df43c2517ae7d18c83b328d91"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"1kPla1+nQQsubI3CeT3ATAYmX6MyCMNXRuqLS4LlynX8wpvOrlfwZsxKkYJt8mT+SOLW8ehsMiI/rFqQUxO4DQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-04T23:48:53.638848Z","bundle_sha256":"520edfad4424ab8db30e13ae7d196f4be6d8328f34a706593e3e0d1229567e3c"}}