{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:1999:V6BDJT6C7QBH6V3YKHVAN5BK4N","short_pith_number":"pith:V6BDJT6C","canonical_record":{"source":{"id":"astro-ph/9903335","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"astro-ph","submitted_at":"1999-03-23T01:14:34Z","cross_cats_sorted":[],"title_canon_sha256":"c4ceaf5654f15f29cc7feeb4f2c844981f93282b30693922f17301db691cf73a","abstract_canon_sha256":"3076bdd7f7387af7b0fa2b57116aa44adc94127e30cd64b25fd59ffc54edaefd"},"schema_version":"1.0"},"canonical_sha256":"af8234cfc2fc027f577851ea06f42ae3556cd97dba70c68dee03aace16d5e3e8","source":{"kind":"arxiv","id":"astro-ph/9903335","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"astro-ph/9903335","created_at":"2026-07-04T15:18:06Z"},{"alias_kind":"arxiv_version","alias_value":"astro-ph/9903335v1","created_at":"2026-07-04T15:18:06Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.astro-ph/9903335","created_at":"2026-07-04T15:18:06Z"},{"alias_kind":"pith_short_12","alias_value":"V6BDJT6C7QBH","created_at":"2026-07-04T15:18:06Z"},{"alias_kind":"pith_short_16","alias_value":"V6BDJT6C7QBH6V3Y","created_at":"2026-07-04T15:18:06Z"},{"alias_kind":"pith_short_8","alias_value":"V6BDJT6C","created_at":"2026-07-04T15:18:06Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:1999:V6BDJT6C7QBH6V3YKHVAN5BK4N","target":"record","payload":{"canonical_record":{"source":{"id":"astro-ph/9903335","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"astro-ph","submitted_at":"1999-03-23T01:14:34Z","cross_cats_sorted":[],"title_canon_sha256":"c4ceaf5654f15f29cc7feeb4f2c844981f93282b30693922f17301db691cf73a","abstract_canon_sha256":"3076bdd7f7387af7b0fa2b57116aa44adc94127e30cd64b25fd59ffc54edaefd"},"schema_version":"1.0"},"canonical_sha256":"af8234cfc2fc027f577851ea06f42ae3556cd97dba70c68dee03aace16d5e3e8","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-04T15:18:06.174904Z","signature_b64":"w3ai/++7ttIrwHI9c6TkQzH9Fn89nVqV3ZFciHoCYQleknGHYqIC076Mw55NWy7VYO5ts5XOfycj5XHDq+aaAQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"af8234cfc2fc027f577851ea06f42ae3556cd97dba70c68dee03aace16d5e3e8","last_reissued_at":"2026-07-04T15:18:06.174484Z","signature_status":"signed_v1","first_computed_at":"2026-07-04T15:18:06.174484Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"astro-ph/9903335","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":"2026-07-04T15:18:06Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"UDlb8CtKUsIPSLeolfu0BchT3T7hyIK5l+GMTMvhKyJzJpkiLwrCVYj7uCwS93cNTkqS+yD4Tid1Jn/hfKx0Cg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-20T08:33:53.577432Z"},"content_sha256":"38184ef3e7604e5a80df4ace9d17ab5a3a06cc372eefa68f4ddfbe8d266c369d","schema_version":"1.0","event_id":"sha256:38184ef3e7604e5a80df4ace9d17ab5a3a06cc372eefa68f4ddfbe8d266c369d"},{"event_type":"graph_snapshot","subject_pith_number":"pith:1999:V6BDJT6C7QBH6V3YKHVAN5BK4N","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Cosmological Limits on the Neutrino Mass from the Lya Forest","license":"","headline":"","cross_cats":[],"primary_cat":"astro-ph","authors_text":"Princeton), Romeel Dave' (Princeton), Rupert A.C. Croft (Harvard CfA), Wayne Hu (IAS","submitted_at":"1999-03-23T01:14:34Z","abstract_excerpt":"The Lya forest in quasar spectra probes scales where massive neutrinos can strongly suppress the growth of mass fluctuations. Using hydrodynamic simulations with massive neutrinos, we successfully test techniques developed to measure the mass power spectrum from the forest. A recent observational measurement in conjunction with a conservative implementation of other cosmological constraints places upper limits on the neutrino mass: m_nu < 5.5 eV for all values of Omega_m, and m_nu < 2.4 (Omega_m/0.17 -1) eV, if 0.2 < Omega_m <0.5 as currently observationally favored (both 95 % C.L.)."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/9903335","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/astro-ph/9903335/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":"2026-07-04T15:18:06Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"BiyBSNcWT96huVAxcONAy5duwGv8B4eQFKolSejRQFuHcXB/X/RgSK7qFY/gCw93XM1SYKF14ttwUMzCzTxZDg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-20T08:33:53.577968Z"},"content_sha256":"a8d3c6014a3c544bb717bdf7cb2ee95fcda11b62183200da26863b6eb73f640c","schema_version":"1.0","event_id":"sha256:a8d3c6014a3c544bb717bdf7cb2ee95fcda11b62183200da26863b6eb73f640c"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/V6BDJT6C7QBH6V3YKHVAN5BK4N/bundle.json","state_url":"https://pith.science/pith/V6BDJT6C7QBH6V3YKHVAN5BK4N/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/V6BDJT6C7QBH6V3YKHVAN5BK4N/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":"2026-08-20T08:33:53Z","links":{"resolver":"https://pith.science/pith/V6BDJT6C7QBH6V3YKHVAN5BK4N","bundle":"https://pith.science/pith/V6BDJT6C7QBH6V3YKHVAN5BK4N/bundle.json","state":"https://pith.science/pith/V6BDJT6C7QBH6V3YKHVAN5BK4N/state.json","well_known_bundle":"https://pith.science/.well-known/pith/V6BDJT6C7QBH6V3YKHVAN5BK4N/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:1999:V6BDJT6C7QBH6V3YKHVAN5BK4N","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":"3076bdd7f7387af7b0fa2b57116aa44adc94127e30cd64b25fd59ffc54edaefd","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"1999-03-23T01:14:34Z","title_canon_sha256":"c4ceaf5654f15f29cc7feeb4f2c844981f93282b30693922f17301db691cf73a"},"schema_version":"1.0","source":{"id":"astro-ph/9903335","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"astro-ph/9903335","created_at":"2026-07-04T15:18:06Z"},{"alias_kind":"arxiv_version","alias_value":"astro-ph/9903335v1","created_at":"2026-07-04T15:18:06Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.astro-ph/9903335","created_at":"2026-07-04T15:18:06Z"},{"alias_kind":"pith_short_12","alias_value":"V6BDJT6C7QBH","created_at":"2026-07-04T15:18:06Z"},{"alias_kind":"pith_short_16","alias_value":"V6BDJT6C7QBH6V3Y","created_at":"2026-07-04T15:18:06Z"},{"alias_kind":"pith_short_8","alias_value":"V6BDJT6C","created_at":"2026-07-04T15:18:06Z"}],"graph_snapshots":[{"event_id":"sha256:a8d3c6014a3c544bb717bdf7cb2ee95fcda11b62183200da26863b6eb73f640c","target":"graph","created_at":"2026-07-04T15:18:06Z","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/astro-ph/9903335/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"The Lya forest in quasar spectra probes scales where massive neutrinos can strongly suppress the growth of mass fluctuations. Using hydrodynamic simulations with massive neutrinos, we successfully test techniques developed to measure the mass power spectrum from the forest. A recent observational measurement in conjunction with a conservative implementation of other cosmological constraints places upper limits on the neutrino mass: m_nu < 5.5 eV for all values of Omega_m, and m_nu < 2.4 (Omega_m/0.17 -1) eV, if 0.2 < Omega_m <0.5 as currently observationally favored (both 95 % C.L.).","authors_text":"Princeton), Romeel Dave' (Princeton), Rupert A.C. Croft (Harvard CfA), Wayne Hu (IAS","cross_cats":[],"headline":"","license":"","primary_cat":"astro-ph","submitted_at":"1999-03-23T01:14:34Z","title":"Cosmological Limits on the Neutrino Mass from the Lya Forest"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/9903335","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":"sha256:38184ef3e7604e5a80df4ace9d17ab5a3a06cc372eefa68f4ddfbe8d266c369d","target":"record","created_at":"2026-07-04T15:18:06Z","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":"3076bdd7f7387af7b0fa2b57116aa44adc94127e30cd64b25fd59ffc54edaefd","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"1999-03-23T01:14:34Z","title_canon_sha256":"c4ceaf5654f15f29cc7feeb4f2c844981f93282b30693922f17301db691cf73a"},"schema_version":"1.0","source":{"id":"astro-ph/9903335","kind":"arxiv","version":1}},"canonical_sha256":"af8234cfc2fc027f577851ea06f42ae3556cd97dba70c68dee03aace16d5e3e8","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"af8234cfc2fc027f577851ea06f42ae3556cd97dba70c68dee03aace16d5e3e8","first_computed_at":"2026-07-04T15:18:06.174484Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-04T15:18:06.174484Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"w3ai/++7ttIrwHI9c6TkQzH9Fn89nVqV3ZFciHoCYQleknGHYqIC076Mw55NWy7VYO5ts5XOfycj5XHDq+aaAQ==","signature_status":"signed_v1","signed_at":"2026-07-04T15:18:06.174904Z","signed_message":"canonical_sha256_bytes"},"source_id":"astro-ph/9903335","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:38184ef3e7604e5a80df4ace9d17ab5a3a06cc372eefa68f4ddfbe8d266c369d","sha256:a8d3c6014a3c544bb717bdf7cb2ee95fcda11b62183200da26863b6eb73f640c"],"state_sha256":"6a774b3e2aa1303214343d924cd0caf6f364b16b30d5aa30b22ca883fbcb0a58"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"DKmROdLtwlniVT85RP9xkLvaeSqFfPdT4bX4we3jkrM4/yO76uJtrVe5ilmq+iYakjGEtcdNwDUQHGoYJ3DCCg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-20T08:33:53.584164Z","bundle_sha256":"ad44ce1f5b6cd300650c814ca36790c71840c79751c834ae12c541503155c95c"}}