{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2001:7BQ226S2GWWHNDZ6EOELJRH5HZ","short_pith_number":"pith:7BQ226S2","canonical_record":{"source":{"id":"astro-ph/0110152","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"astro-ph","submitted_at":"2001-10-05T18:17:35Z","cross_cats_sorted":[],"title_canon_sha256":"863d89399fc9351497d3135ccb08964f5edf757b7d704c49012962e9cce89157","abstract_canon_sha256":"1b55095e3d2446a8d6aa2ced16550bf5cc9ea97f360e9d5527a10ff8f3691eec"},"schema_version":"1.0"},"canonical_sha256":"f861ad7a5a35ac768f3e2388b4c4fd3e431ddcb1794644eb6a8d817c512d59b5","source":{"kind":"arxiv","id":"astro-ph/0110152","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"astro-ph/0110152","created_at":"2026-05-18T01:07:45Z"},{"alias_kind":"arxiv_version","alias_value":"astro-ph/0110152v1","created_at":"2026-05-18T01:07:45Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.astro-ph/0110152","created_at":"2026-05-18T01:07:45Z"},{"alias_kind":"pith_short_12","alias_value":"7BQ226S2GWWH","created_at":"2026-05-18T12:25:50Z"},{"alias_kind":"pith_short_16","alias_value":"7BQ226S2GWWHNDZ6","created_at":"2026-05-18T12:25:50Z"},{"alias_kind":"pith_short_8","alias_value":"7BQ226S2","created_at":"2026-05-18T12:25:50Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2001:7BQ226S2GWWHNDZ6EOELJRH5HZ","target":"record","payload":{"canonical_record":{"source":{"id":"astro-ph/0110152","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"astro-ph","submitted_at":"2001-10-05T18:17:35Z","cross_cats_sorted":[],"title_canon_sha256":"863d89399fc9351497d3135ccb08964f5edf757b7d704c49012962e9cce89157","abstract_canon_sha256":"1b55095e3d2446a8d6aa2ced16550bf5cc9ea97f360e9d5527a10ff8f3691eec"},"schema_version":"1.0"},"canonical_sha256":"f861ad7a5a35ac768f3e2388b4c4fd3e431ddcb1794644eb6a8d817c512d59b5","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:07:45.443183Z","signature_b64":"SV99LZl9YOpqLeUUyOsDVD++gUkOwmaGGZvYSalVw5Mh1DgvPi7Rx0hILllWlzlt7MzqU4IRC9KDCRJCi7Z8Cg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"f861ad7a5a35ac768f3e2388b4c4fd3e431ddcb1794644eb6a8d817c512d59b5","last_reissued_at":"2026-05-18T01:07:45.442481Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:07:45.442481Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"astro-ph/0110152","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":"2026-05-18T01:07:45Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"tHXRB7U31P1Ol/BE72wrmwsTJsyspMDmkgZA7X02EZIgg9PNCfQC4vbPtN7HjvqZA4ML1MJgrGte/2SEjQ/FAQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-28T17:40:50.612742Z"},"content_sha256":"111ce54388b0f3d801b7edea23010e5ca2ea9e9f945c941ace4854fb5160f454","schema_version":"1.0","event_id":"sha256:111ce54388b0f3d801b7edea23010e5ca2ea9e9f945c941ace4854fb5160f454"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2001:7BQ226S2GWWHNDZ6EOELJRH5HZ","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"The large-scale rms bulk velocity estimated from QSOs' Ly$\\alpha$ forests","license":"","headline":"","cross_cats":[],"primary_cat":"astro-ph","authors_text":"Hu Zhan, Li-Zhi Fang","submitted_at":"2001-10-05T18:17:35Z","abstract_excerpt":"We propose a method for estimating the large-scale rms bulk velocity of the cosmic mass field from the transmitted fluxes of Ly$\\alpha$ forests. It is based on two linear relationships on large scales: 1) the relation between the fluctuations of the transmission and the underlying density field, and 2) the relation between the density fluctuations and the peculiar velocity field. We show that, with a multiscale decomposition, the two relations can be effectively employed for predicting the rms bulk velocity. Since QSO's Ly$\\alpha$ forest is due to the absorptions of diffusely distributed and p"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/0110152","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":"2026-05-18T01:07:45Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"h8xZ6uAWiEzoUWJ9/QNBvkjYiFO//FonXQ6YbC5joA19QQqcN3vjUipBOTWpHoDakU/BQf+dw+H0Y3AVOxPqAQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-28T17:40:50.613441Z"},"content_sha256":"0f4e60520e74afdba690c3abb1ea1b68d94d7bb2f0071833081727dc5abc990b","schema_version":"1.0","event_id":"sha256:0f4e60520e74afdba690c3abb1ea1b68d94d7bb2f0071833081727dc5abc990b"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/7BQ226S2GWWHNDZ6EOELJRH5HZ/bundle.json","state_url":"https://pith.science/pith/7BQ226S2GWWHNDZ6EOELJRH5HZ/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/7BQ226S2GWWHNDZ6EOELJRH5HZ/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":"2026-05-28T17:40:50Z","links":{"resolver":"https://pith.science/pith/7BQ226S2GWWHNDZ6EOELJRH5HZ","bundle":"https://pith.science/pith/7BQ226S2GWWHNDZ6EOELJRH5HZ/bundle.json","state":"https://pith.science/pith/7BQ226S2GWWHNDZ6EOELJRH5HZ/state.json","well_known_bundle":"https://pith.science/.well-known/pith/7BQ226S2GWWHNDZ6EOELJRH5HZ/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2001:7BQ226S2GWWHNDZ6EOELJRH5HZ","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":"1b55095e3d2446a8d6aa2ced16550bf5cc9ea97f360e9d5527a10ff8f3691eec","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"2001-10-05T18:17:35Z","title_canon_sha256":"863d89399fc9351497d3135ccb08964f5edf757b7d704c49012962e9cce89157"},"schema_version":"1.0","source":{"id":"astro-ph/0110152","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"astro-ph/0110152","created_at":"2026-05-18T01:07:45Z"},{"alias_kind":"arxiv_version","alias_value":"astro-ph/0110152v1","created_at":"2026-05-18T01:07:45Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.astro-ph/0110152","created_at":"2026-05-18T01:07:45Z"},{"alias_kind":"pith_short_12","alias_value":"7BQ226S2GWWH","created_at":"2026-05-18T12:25:50Z"},{"alias_kind":"pith_short_16","alias_value":"7BQ226S2GWWHNDZ6","created_at":"2026-05-18T12:25:50Z"},{"alias_kind":"pith_short_8","alias_value":"7BQ226S2","created_at":"2026-05-18T12:25:50Z"}],"graph_snapshots":[{"event_id":"sha256:0f4e60520e74afdba690c3abb1ea1b68d94d7bb2f0071833081727dc5abc990b","target":"graph","created_at":"2026-05-18T01:07:45Z","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 propose a method for estimating the large-scale rms bulk velocity of the cosmic mass field from the transmitted fluxes of Ly$\\alpha$ forests. It is based on two linear relationships on large scales: 1) the relation between the fluctuations of the transmission and the underlying density field, and 2) the relation between the density fluctuations and the peculiar velocity field. We show that, with a multiscale decomposition, the two relations can be effectively employed for predicting the rms bulk velocity. Since QSO's Ly$\\alpha$ forest is due to the absorptions of diffusely distributed and p","authors_text":"Hu Zhan, Li-Zhi Fang","cross_cats":[],"headline":"","license":"","primary_cat":"astro-ph","submitted_at":"2001-10-05T18:17:35Z","title":"The large-scale rms bulk velocity estimated from QSOs' Ly$\\alpha$ forests"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/0110152","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":"sha256:111ce54388b0f3d801b7edea23010e5ca2ea9e9f945c941ace4854fb5160f454","target":"record","created_at":"2026-05-18T01:07:45Z","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":"1b55095e3d2446a8d6aa2ced16550bf5cc9ea97f360e9d5527a10ff8f3691eec","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"2001-10-05T18:17:35Z","title_canon_sha256":"863d89399fc9351497d3135ccb08964f5edf757b7d704c49012962e9cce89157"},"schema_version":"1.0","source":{"id":"astro-ph/0110152","kind":"arxiv","version":1}},"canonical_sha256":"f861ad7a5a35ac768f3e2388b4c4fd3e431ddcb1794644eb6a8d817c512d59b5","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"f861ad7a5a35ac768f3e2388b4c4fd3e431ddcb1794644eb6a8d817c512d59b5","first_computed_at":"2026-05-18T01:07:45.442481Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:07:45.442481Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"SV99LZl9YOpqLeUUyOsDVD++gUkOwmaGGZvYSalVw5Mh1DgvPi7Rx0hILllWlzlt7MzqU4IRC9KDCRJCi7Z8Cg==","signature_status":"signed_v1","signed_at":"2026-05-18T01:07:45.443183Z","signed_message":"canonical_sha256_bytes"},"source_id":"astro-ph/0110152","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:111ce54388b0f3d801b7edea23010e5ca2ea9e9f945c941ace4854fb5160f454","sha256:0f4e60520e74afdba690c3abb1ea1b68d94d7bb2f0071833081727dc5abc990b"],"state_sha256":"ebeba11ae757c6d613ed2e8375722c9875fffe4f4fe2b721d436d2d827493681"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Ydxi3JTW9nfW/mor/IhT5MKpazkedho6SUuwCH++7m/QQAdaJZuvqgpnkbQto9TouCkCI+Hk+UaL7nZ4jCElBg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-28T17:40:50.617033Z","bundle_sha256":"32eb8f5fd0cfc5f94de23af1f31e80c2679de1213d406535edc4668d8b4a99de"}}