{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2006:QUKBZ4YFMDWMLLG56WB6HJUAUW","short_pith_number":"pith:QUKBZ4YF","canonical_record":{"source":{"id":"physics/0611195","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"physics.flu-dyn","submitted_at":"2006-11-21T08:48:54Z","cross_cats_sorted":[],"title_canon_sha256":"22d86d9b676c9a357ee2e3a065d973d8849a8d0a796484396a521a8a4132cdcf","abstract_canon_sha256":"b2c9fb1d23587b86131dbb0eff0dcd77f5bc1d22fd1591bb0dd79176bb35b622"},"schema_version":"1.0"},"canonical_sha256":"85141cf30560ecc5acddf583e3a680a5b17086affd3ddee0ff8820dab193f4db","source":{"kind":"arxiv","id":"physics/0611195","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"physics/0611195","created_at":"2026-05-18T01:38:05Z"},{"alias_kind":"arxiv_version","alias_value":"physics/0611195v1","created_at":"2026-05-18T01:38:05Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.physics/0611195","created_at":"2026-05-18T01:38:05Z"},{"alias_kind":"pith_short_12","alias_value":"QUKBZ4YFMDWM","created_at":"2026-05-18T12:25:54Z"},{"alias_kind":"pith_short_16","alias_value":"QUKBZ4YFMDWMLLG5","created_at":"2026-05-18T12:25:54Z"},{"alias_kind":"pith_short_8","alias_value":"QUKBZ4YF","created_at":"2026-05-18T12:25:54Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2006:QUKBZ4YFMDWMLLG56WB6HJUAUW","target":"record","payload":{"canonical_record":{"source":{"id":"physics/0611195","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"physics.flu-dyn","submitted_at":"2006-11-21T08:48:54Z","cross_cats_sorted":[],"title_canon_sha256":"22d86d9b676c9a357ee2e3a065d973d8849a8d0a796484396a521a8a4132cdcf","abstract_canon_sha256":"b2c9fb1d23587b86131dbb0eff0dcd77f5bc1d22fd1591bb0dd79176bb35b622"},"schema_version":"1.0"},"canonical_sha256":"85141cf30560ecc5acddf583e3a680a5b17086affd3ddee0ff8820dab193f4db","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:38:05.011045Z","signature_b64":"6pKY9EKhyc7x0riODNqTgast3lFfJ3BtKJZWHLaE1uerbqOGfQmZu1VODGe3NpkJywdewkHyxVS7mgp5gQ5WAQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"85141cf30560ecc5acddf583e3a680a5b17086affd3ddee0ff8820dab193f4db","last_reissued_at":"2026-05-18T01:38:05.010494Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:38:05.010494Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"physics/0611195","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":"2026-05-18T01:38:05Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"fr95IpbJneiwMRX4CUvxixzdrzZFNgtQNomsPxnG6p1OJ6im2Np+Un9BTjDNj52+gAATHvZBjX4Ba+VEjtTaDg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-04T04:22:19.110767Z"},"content_sha256":"b07fb833b8e53d19ce33106f78f49fa5b98a1d101a3f82939582c6f31743bdd9","schema_version":"1.0","event_id":"sha256:b07fb833b8e53d19ce33106f78f49fa5b98a1d101a3f82939582c6f31743bdd9"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2006:QUKBZ4YFMDWMLLG56WB6HJUAUW","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"The phase-locked mean impulse response of a turbulent channel flow","license":"","headline":"","cross_cats":[],"primary_cat":"physics.flu-dyn","authors_text":"Maurizio Quadrio, Paolo Luchini, Simone Zuccher","submitted_at":"2006-11-21T08:48:54Z","abstract_excerpt":"We describe the first DNS-based measurement of the complete mean response of a turbulent channel flow to small external disturbances. Space-time impulsive perturbations are applied at one channel wall, and the linear response describes their mean effect on the flow field as a function of spatial and temporal separations. The turbulent response is shown to differ from the response a laminar flow with the turbulent mean velocity profile as base flow."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"physics/0611195","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":"2026-05-18T01:38:05Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"41BTMOrqcCW9kAxb8GuYjU40GnapiizfOi9RtMS9C5yE55wMvmgOVU0gacMWx1LZEjS79gdaW4AlQWgqBYofBg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-04T04:22:19.111119Z"},"content_sha256":"5e65baa3ca15537fd97edde7627b6db5640fbcc1f59b265dbb91284990fe6dbf","schema_version":"1.0","event_id":"sha256:5e65baa3ca15537fd97edde7627b6db5640fbcc1f59b265dbb91284990fe6dbf"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/QUKBZ4YFMDWMLLG56WB6HJUAUW/bundle.json","state_url":"https://pith.science/pith/QUKBZ4YFMDWMLLG56WB6HJUAUW/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/QUKBZ4YFMDWMLLG56WB6HJUAUW/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":"2026-06-04T04:22:19Z","links":{"resolver":"https://pith.science/pith/QUKBZ4YFMDWMLLG56WB6HJUAUW","bundle":"https://pith.science/pith/QUKBZ4YFMDWMLLG56WB6HJUAUW/bundle.json","state":"https://pith.science/pith/QUKBZ4YFMDWMLLG56WB6HJUAUW/state.json","well_known_bundle":"https://pith.science/.well-known/pith/QUKBZ4YFMDWMLLG56WB6HJUAUW/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2006:QUKBZ4YFMDWMLLG56WB6HJUAUW","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":"b2c9fb1d23587b86131dbb0eff0dcd77f5bc1d22fd1591bb0dd79176bb35b622","cross_cats_sorted":[],"license":"","primary_cat":"physics.flu-dyn","submitted_at":"2006-11-21T08:48:54Z","title_canon_sha256":"22d86d9b676c9a357ee2e3a065d973d8849a8d0a796484396a521a8a4132cdcf"},"schema_version":"1.0","source":{"id":"physics/0611195","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"physics/0611195","created_at":"2026-05-18T01:38:05Z"},{"alias_kind":"arxiv_version","alias_value":"physics/0611195v1","created_at":"2026-05-18T01:38:05Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.physics/0611195","created_at":"2026-05-18T01:38:05Z"},{"alias_kind":"pith_short_12","alias_value":"QUKBZ4YFMDWM","created_at":"2026-05-18T12:25:54Z"},{"alias_kind":"pith_short_16","alias_value":"QUKBZ4YFMDWMLLG5","created_at":"2026-05-18T12:25:54Z"},{"alias_kind":"pith_short_8","alias_value":"QUKBZ4YF","created_at":"2026-05-18T12:25:54Z"}],"graph_snapshots":[{"event_id":"sha256:5e65baa3ca15537fd97edde7627b6db5640fbcc1f59b265dbb91284990fe6dbf","target":"graph","created_at":"2026-05-18T01:38:05Z","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 describe the first DNS-based measurement of the complete mean response of a turbulent channel flow to small external disturbances. Space-time impulsive perturbations are applied at one channel wall, and the linear response describes their mean effect on the flow field as a function of spatial and temporal separations. The turbulent response is shown to differ from the response a laminar flow with the turbulent mean velocity profile as base flow.","authors_text":"Maurizio Quadrio, Paolo Luchini, Simone Zuccher","cross_cats":[],"headline":"","license":"","primary_cat":"physics.flu-dyn","submitted_at":"2006-11-21T08:48:54Z","title":"The phase-locked mean impulse response of a turbulent channel flow"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"physics/0611195","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:b07fb833b8e53d19ce33106f78f49fa5b98a1d101a3f82939582c6f31743bdd9","target":"record","created_at":"2026-05-18T01:38:05Z","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":"b2c9fb1d23587b86131dbb0eff0dcd77f5bc1d22fd1591bb0dd79176bb35b622","cross_cats_sorted":[],"license":"","primary_cat":"physics.flu-dyn","submitted_at":"2006-11-21T08:48:54Z","title_canon_sha256":"22d86d9b676c9a357ee2e3a065d973d8849a8d0a796484396a521a8a4132cdcf"},"schema_version":"1.0","source":{"id":"physics/0611195","kind":"arxiv","version":1}},"canonical_sha256":"85141cf30560ecc5acddf583e3a680a5b17086affd3ddee0ff8820dab193f4db","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"85141cf30560ecc5acddf583e3a680a5b17086affd3ddee0ff8820dab193f4db","first_computed_at":"2026-05-18T01:38:05.010494Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:38:05.010494Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"6pKY9EKhyc7x0riODNqTgast3lFfJ3BtKJZWHLaE1uerbqOGfQmZu1VODGe3NpkJywdewkHyxVS7mgp5gQ5WAQ==","signature_status":"signed_v1","signed_at":"2026-05-18T01:38:05.011045Z","signed_message":"canonical_sha256_bytes"},"source_id":"physics/0611195","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:b07fb833b8e53d19ce33106f78f49fa5b98a1d101a3f82939582c6f31743bdd9","sha256:5e65baa3ca15537fd97edde7627b6db5640fbcc1f59b265dbb91284990fe6dbf"],"state_sha256":"a018b3f006961b8e7e34caa3e54ed22fe7b0a8aa23e11f2c467fad8e88768f58"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"7zrzzkIUcH/E4fJPtNCdT8W3C6gB+iL1mVbyTOI2rY6T3kNUSXF16J6UD1m4iNxPsfbmyFFFkqlKP+wT3CXWAA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-04T04:22:19.113254Z","bundle_sha256":"2ca2e77c94cf7f01d0462427aa7e411c1e2dd81242fdf171c543ed0c8417d00c"}}