{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2024:4CKTOOC65QIQDWY3F6PNJGZCQR","short_pith_number":"pith:4CKTOOC6","canonical_record":{"source":{"id":"2408.15824","kind":"arxiv","version":2},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.GA","submitted_at":"2024-08-28T14:34:48Z","cross_cats_sorted":[],"title_canon_sha256":"431b83af803dbe14a200d8ad72dc928ba9076d3cc05e9d53feab808a944d8c33","abstract_canon_sha256":"f36d1cb7a4bcdc142d7aa8fd5182c7ffb48983ac11bdd572c941a4c56b4b6b29"},"schema_version":"1.0"},"canonical_sha256":"e09537385eec1101db1b2f9ed49b22846fbb29cb4257c63820f084f0194b8122","source":{"kind":"arxiv","id":"2408.15824","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2408.15824","created_at":"2026-07-05T09:22:21Z"},{"alias_kind":"arxiv_version","alias_value":"2408.15824v2","created_at":"2026-07-05T09:22:21Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2408.15824","created_at":"2026-07-05T09:22:21Z"},{"alias_kind":"pith_short_12","alias_value":"4CKTOOC65QIQ","created_at":"2026-07-05T09:22:21Z"},{"alias_kind":"pith_short_16","alias_value":"4CKTOOC65QIQDWY3","created_at":"2026-07-05T09:22:21Z"},{"alias_kind":"pith_short_8","alias_value":"4CKTOOC6","created_at":"2026-07-05T09:22:21Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2024:4CKTOOC65QIQDWY3F6PNJGZCQR","target":"record","payload":{"canonical_record":{"source":{"id":"2408.15824","kind":"arxiv","version":2},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.GA","submitted_at":"2024-08-28T14:34:48Z","cross_cats_sorted":[],"title_canon_sha256":"431b83af803dbe14a200d8ad72dc928ba9076d3cc05e9d53feab808a944d8c33","abstract_canon_sha256":"f36d1cb7a4bcdc142d7aa8fd5182c7ffb48983ac11bdd572c941a4c56b4b6b29"},"schema_version":"1.0"},"canonical_sha256":"e09537385eec1101db1b2f9ed49b22846fbb29cb4257c63820f084f0194b8122","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T09:22:21.504120Z","signature_b64":"dOWUrqGEblJFUrL3ckWEjyc/po0LJ6+3khjbwuDPG7bpIRwEFkzIjNmAPOiiPUrxMSosQuGuKpYUJObtDmBtCA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"e09537385eec1101db1b2f9ed49b22846fbb29cb4257c63820f084f0194b8122","last_reissued_at":"2026-07-05T09:22:21.503585Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T09:22:21.503585Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2408.15824","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":"2026-07-05T09:22:21Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"t7ojTxjtAlrhMp6i9TNftGShOaw9PRIfqxDsra4x8PjjJ1qx8M06Dgp8Ga1lp0HUqcvV6Bm2hqVlmDPiQ2tUDA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-04T06:07:17.174502Z"},"content_sha256":"9c86fdc1510489ddb13ee1848560cc68406ea55c01c06a16b84591a32ea795bb","schema_version":"1.0","event_id":"sha256:9c86fdc1510489ddb13ee1848560cc68406ea55c01c06a16b84591a32ea795bb"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2024:4CKTOOC65QIQDWY3F6PNJGZCQR","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"On the Nature of the C IV-bearing Circumgalactic Medium at z~1","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.GA","authors_text":"Fakhri S. Zahedy, Hsiao-Wen Chen, Mandy C. Chen, Sean D. Johnson, Sebastiano Cantalupo, Sowgat Muzahid, Suyash Kumar, Zhijie Qu","submitted_at":"2024-08-28T14:34:48Z","abstract_excerpt":"This paper presents a detailed study of the physical properties of seven C IV absorbers identified at z_abs = 0.68-1.28 along the line of sight toward QSO PG 1522+101 (z_QSO = 1.330). The study leverages high-quality QSO spectra from HST COS and STIS, and Keck HIRES to resolve component structures and to constrain the gas density and elemental abundances of individual components. Under the assumption of photoionization equilibrium (PIE), five of the 12 C IV components require a mixture of high- and low-density phases to fully explain the observed relative abundances between low-, intermediate-"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2408.15824","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/2408.15824/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":"2026-07-05T09:22:21Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"tx0AUzst/k5G7FPN052E9fk72VdHLYO+5Kyer1bO6EOORw7QUD8kOpG9rqk6nkKDIhSlxf/lNOsPBmpWLqfmAg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-04T06:07:17.175064Z"},"content_sha256":"07a75510b324f4451d03cddcb841154f39a69a081f49c6c1d4077b8848ec8bfb","schema_version":"1.0","event_id":"sha256:07a75510b324f4451d03cddcb841154f39a69a081f49c6c1d4077b8848ec8bfb"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/4CKTOOC65QIQDWY3F6PNJGZCQR/bundle.json","state_url":"https://pith.science/pith/4CKTOOC65QIQDWY3F6PNJGZCQR/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/4CKTOOC65QIQDWY3F6PNJGZCQR/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":"2026-08-04T06:07:17Z","links":{"resolver":"https://pith.science/pith/4CKTOOC65QIQDWY3F6PNJGZCQR","bundle":"https://pith.science/pith/4CKTOOC65QIQDWY3F6PNJGZCQR/bundle.json","state":"https://pith.science/pith/4CKTOOC65QIQDWY3F6PNJGZCQR/state.json","well_known_bundle":"https://pith.science/.well-known/pith/4CKTOOC65QIQDWY3F6PNJGZCQR/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2024:4CKTOOC65QIQDWY3F6PNJGZCQR","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":"f36d1cb7a4bcdc142d7aa8fd5182c7ffb48983ac11bdd572c941a4c56b4b6b29","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.GA","submitted_at":"2024-08-28T14:34:48Z","title_canon_sha256":"431b83af803dbe14a200d8ad72dc928ba9076d3cc05e9d53feab808a944d8c33"},"schema_version":"1.0","source":{"id":"2408.15824","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2408.15824","created_at":"2026-07-05T09:22:21Z"},{"alias_kind":"arxiv_version","alias_value":"2408.15824v2","created_at":"2026-07-05T09:22:21Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2408.15824","created_at":"2026-07-05T09:22:21Z"},{"alias_kind":"pith_short_12","alias_value":"4CKTOOC65QIQ","created_at":"2026-07-05T09:22:21Z"},{"alias_kind":"pith_short_16","alias_value":"4CKTOOC65QIQDWY3","created_at":"2026-07-05T09:22:21Z"},{"alias_kind":"pith_short_8","alias_value":"4CKTOOC6","created_at":"2026-07-05T09:22:21Z"}],"graph_snapshots":[{"event_id":"sha256:07a75510b324f4451d03cddcb841154f39a69a081f49c6c1d4077b8848ec8bfb","target":"graph","created_at":"2026-07-05T09:22:21Z","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/2408.15824/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"This paper presents a detailed study of the physical properties of seven C IV absorbers identified at z_abs = 0.68-1.28 along the line of sight toward QSO PG 1522+101 (z_QSO = 1.330). The study leverages high-quality QSO spectra from HST COS and STIS, and Keck HIRES to resolve component structures and to constrain the gas density and elemental abundances of individual components. Under the assumption of photoionization equilibrium (PIE), five of the 12 C IV components require a mixture of high- and low-density phases to fully explain the observed relative abundances between low-, intermediate-","authors_text":"Fakhri S. Zahedy, Hsiao-Wen Chen, Mandy C. Chen, Sean D. Johnson, Sebastiano Cantalupo, Sowgat Muzahid, Suyash Kumar, Zhijie Qu","cross_cats":[],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.GA","submitted_at":"2024-08-28T14:34:48Z","title":"On the Nature of the C IV-bearing Circumgalactic Medium at z~1"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2408.15824","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":"sha256:9c86fdc1510489ddb13ee1848560cc68406ea55c01c06a16b84591a32ea795bb","target":"record","created_at":"2026-07-05T09:22:21Z","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":"f36d1cb7a4bcdc142d7aa8fd5182c7ffb48983ac11bdd572c941a4c56b4b6b29","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.GA","submitted_at":"2024-08-28T14:34:48Z","title_canon_sha256":"431b83af803dbe14a200d8ad72dc928ba9076d3cc05e9d53feab808a944d8c33"},"schema_version":"1.0","source":{"id":"2408.15824","kind":"arxiv","version":2}},"canonical_sha256":"e09537385eec1101db1b2f9ed49b22846fbb29cb4257c63820f084f0194b8122","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"e09537385eec1101db1b2f9ed49b22846fbb29cb4257c63820f084f0194b8122","first_computed_at":"2026-07-05T09:22:21.503585Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T09:22:21.503585Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"dOWUrqGEblJFUrL3ckWEjyc/po0LJ6+3khjbwuDPG7bpIRwEFkzIjNmAPOiiPUrxMSosQuGuKpYUJObtDmBtCA==","signature_status":"signed_v1","signed_at":"2026-07-05T09:22:21.504120Z","signed_message":"canonical_sha256_bytes"},"source_id":"2408.15824","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:9c86fdc1510489ddb13ee1848560cc68406ea55c01c06a16b84591a32ea795bb","sha256:07a75510b324f4451d03cddcb841154f39a69a081f49c6c1d4077b8848ec8bfb"],"state_sha256":"54c89875a12a7e72e667ade68fc8902f5b09b0d2e8933f1f718b8dc53169f2a9"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"B+A+cdsTNEDBAcXO7Z5KkObr62qPRCJtIWD+7iJkKGkbPyWrqFNRycnhrvqJ0q3uUamBKATvqHxHKwT6Wo0fDA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-04T06:07:17.180607Z","bundle_sha256":"081ab849c0d0876781a70b6beb4ee15e00293c507da6800834b5b78eefd1acfc"}}