{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2011:4C255ZOKRWN2OBV3SHMWBRL7KT","short_pith_number":"pith:4C255ZOK","canonical_record":{"source":{"id":"1106.4784","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2011-06-23T17:56:03Z","cross_cats_sorted":[],"title_canon_sha256":"d40b3cfe5e9f9f9347220560abbb51808c8412135906be996519f7695c5bbbfe","abstract_canon_sha256":"e5c13052caf523445820b4ef69cac91d8682fd272bbd6fc598016b7e603ecb1b"},"schema_version":"1.0"},"canonical_sha256":"e0b5dee5ca8d9ba706bb91d960c57f54d68993eb89744ff857d85af645138758","source":{"kind":"arxiv","id":"1106.4784","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1106.4784","created_at":"2026-05-18T02:01:31Z"},{"alias_kind":"arxiv_version","alias_value":"1106.4784v1","created_at":"2026-05-18T02:01:31Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1106.4784","created_at":"2026-05-18T02:01:31Z"},{"alias_kind":"pith_short_12","alias_value":"4C255ZOKRWN2","created_at":"2026-05-18T12:26:20Z"},{"alias_kind":"pith_short_16","alias_value":"4C255ZOKRWN2OBV3","created_at":"2026-05-18T12:26:20Z"},{"alias_kind":"pith_short_8","alias_value":"4C255ZOK","created_at":"2026-05-18T12:26:20Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2011:4C255ZOKRWN2OBV3SHMWBRL7KT","target":"record","payload":{"canonical_record":{"source":{"id":"1106.4784","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2011-06-23T17:56:03Z","cross_cats_sorted":[],"title_canon_sha256":"d40b3cfe5e9f9f9347220560abbb51808c8412135906be996519f7695c5bbbfe","abstract_canon_sha256":"e5c13052caf523445820b4ef69cac91d8682fd272bbd6fc598016b7e603ecb1b"},"schema_version":"1.0"},"canonical_sha256":"e0b5dee5ca8d9ba706bb91d960c57f54d68993eb89744ff857d85af645138758","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:01:31.511245Z","signature_b64":"cEuAJrI2p6kfaIOMvXHQEYzvTG2rzzqpCGrCVuI+0x6opB7bjJDDsvY+tadXoutdJE1O4eWWKJQK5FVqkX2DAQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"e0b5dee5ca8d9ba706bb91d960c57f54d68993eb89744ff857d85af645138758","last_reissued_at":"2026-05-18T02:01:31.510459Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:01:31.510459Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1106.4784","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":"2026-05-18T02:01:31Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"p5drTRixXkbyVevtgi+aesFlitJMG5F3k6RBbeFm/p1DC/0ibZhRbaWD/HClxD0x1TRW4bkbc60gy8eFZH9PCg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-26T12:31:32.221675Z"},"content_sha256":"92ea03d2cf292c78a552ae054c0c1b79f68ce2d599ae5f9b278a3e93ae4df3e5","schema_version":"1.0","event_id":"sha256:92ea03d2cf292c78a552ae054c0c1b79f68ce2d599ae5f9b278a3e93ae4df3e5"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2011:4C255ZOKRWN2OBV3SHMWBRL7KT","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Discovery of Water Vapor in the High-Redshift Quasar APM 08279+5255 at Z=3.91","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.CO","authors_text":"D. A. Neufeld, D. C. Lis, M. Gerin, R. Neri, T. G. Phillips","submitted_at":"2011-06-23T17:56:03Z","abstract_excerpt":"We report a detection of the excited 220-211 rotational transition of para-H2O in APM 08279+5255 using the IRAM Plateau de Bure interferometer. At z = 3.91, this is the highest-redshift detection of interstellar water to date. From LVG modeling, we conclude that this transition is predominantly radiatively pumped and on its own does not provide a good estimate of the water abundance. However, additional water transitions are predicted to be detectable in this source, which would lead to an improved excitation model. We also present a sensitive upper limit for the HF J = 1 - 0 absorption toward"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1106.4784","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":"2026-05-18T02:01:31Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"deZNW5wM/r4yxpj80hyAYX5M5CNtv0nMJux99FdZxXAAYJPXGEDxGWaO4UA8Dkoi+Achb7+2uS6fC2t4PQ9YBQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-26T12:31:32.222336Z"},"content_sha256":"803b46fcf2d98e39bff29726b9787a0af8519f9af76fad052ebf52b6f4d8a77f","schema_version":"1.0","event_id":"sha256:803b46fcf2d98e39bff29726b9787a0af8519f9af76fad052ebf52b6f4d8a77f"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/4C255ZOKRWN2OBV3SHMWBRL7KT/bundle.json","state_url":"https://pith.science/pith/4C255ZOKRWN2OBV3SHMWBRL7KT/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/4C255ZOKRWN2OBV3SHMWBRL7KT/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":"2026-05-26T12:31:32Z","links":{"resolver":"https://pith.science/pith/4C255ZOKRWN2OBV3SHMWBRL7KT","bundle":"https://pith.science/pith/4C255ZOKRWN2OBV3SHMWBRL7KT/bundle.json","state":"https://pith.science/pith/4C255ZOKRWN2OBV3SHMWBRL7KT/state.json","well_known_bundle":"https://pith.science/.well-known/pith/4C255ZOKRWN2OBV3SHMWBRL7KT/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2011:4C255ZOKRWN2OBV3SHMWBRL7KT","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":"e5c13052caf523445820b4ef69cac91d8682fd272bbd6fc598016b7e603ecb1b","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2011-06-23T17:56:03Z","title_canon_sha256":"d40b3cfe5e9f9f9347220560abbb51808c8412135906be996519f7695c5bbbfe"},"schema_version":"1.0","source":{"id":"1106.4784","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1106.4784","created_at":"2026-05-18T02:01:31Z"},{"alias_kind":"arxiv_version","alias_value":"1106.4784v1","created_at":"2026-05-18T02:01:31Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1106.4784","created_at":"2026-05-18T02:01:31Z"},{"alias_kind":"pith_short_12","alias_value":"4C255ZOKRWN2","created_at":"2026-05-18T12:26:20Z"},{"alias_kind":"pith_short_16","alias_value":"4C255ZOKRWN2OBV3","created_at":"2026-05-18T12:26:20Z"},{"alias_kind":"pith_short_8","alias_value":"4C255ZOK","created_at":"2026-05-18T12:26:20Z"}],"graph_snapshots":[{"event_id":"sha256:803b46fcf2d98e39bff29726b9787a0af8519f9af76fad052ebf52b6f4d8a77f","target":"graph","created_at":"2026-05-18T02:01:31Z","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":"We report a detection of the excited 220-211 rotational transition of para-H2O in APM 08279+5255 using the IRAM Plateau de Bure interferometer. At z = 3.91, this is the highest-redshift detection of interstellar water to date. From LVG modeling, we conclude that this transition is predominantly radiatively pumped and on its own does not provide a good estimate of the water abundance. However, additional water transitions are predicted to be detectable in this source, which would lead to an improved excitation model. We also present a sensitive upper limit for the HF J = 1 - 0 absorption toward","authors_text":"D. A. Neufeld, D. C. Lis, M. Gerin, R. Neri, T. G. Phillips","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2011-06-23T17:56:03Z","title":"Discovery of Water Vapor in the High-Redshift Quasar APM 08279+5255 at Z=3.91"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1106.4784","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":"sha256:92ea03d2cf292c78a552ae054c0c1b79f68ce2d599ae5f9b278a3e93ae4df3e5","target":"record","created_at":"2026-05-18T02:01:31Z","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":"e5c13052caf523445820b4ef69cac91d8682fd272bbd6fc598016b7e603ecb1b","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2011-06-23T17:56:03Z","title_canon_sha256":"d40b3cfe5e9f9f9347220560abbb51808c8412135906be996519f7695c5bbbfe"},"schema_version":"1.0","source":{"id":"1106.4784","kind":"arxiv","version":1}},"canonical_sha256":"e0b5dee5ca8d9ba706bb91d960c57f54d68993eb89744ff857d85af645138758","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"e0b5dee5ca8d9ba706bb91d960c57f54d68993eb89744ff857d85af645138758","first_computed_at":"2026-05-18T02:01:31.510459Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:01:31.510459Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"cEuAJrI2p6kfaIOMvXHQEYzvTG2rzzqpCGrCVuI+0x6opB7bjJDDsvY+tadXoutdJE1O4eWWKJQK5FVqkX2DAQ==","signature_status":"signed_v1","signed_at":"2026-05-18T02:01:31.511245Z","signed_message":"canonical_sha256_bytes"},"source_id":"1106.4784","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:92ea03d2cf292c78a552ae054c0c1b79f68ce2d599ae5f9b278a3e93ae4df3e5","sha256:803b46fcf2d98e39bff29726b9787a0af8519f9af76fad052ebf52b6f4d8a77f"],"state_sha256":"966807cb510e6e399712dd7be9b9408a67959c2c22e1074b8df494415f480afa"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"lXxORdhMo+/dASJEt5N5FEl7/Qp+AsAQRISo/W9YqNeiY0hoyZePB7Wh3Y5yx259JV+GBnPneebOOoTCcrmSCA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-26T12:31:32.225459Z","bundle_sha256":"2e791db077ca9fed5bd9c6f0b6b25e51160ea84ee70ef62c69e792ca5f448048"}}