{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2009:TBUEQE52BE7FGJ2ROX6ECU62ZA","short_pith_number":"pith:TBUEQE52","canonical_record":{"source":{"id":"0907.5375","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.class-ph","submitted_at":"2009-07-30T16:53:49Z","cross_cats_sorted":[],"title_canon_sha256":"6e77bd5337adb0d6b38701669173e50cdbb2c8327d550602193de650b9739407","abstract_canon_sha256":"260789c0beb7a08c24a8740c80c043e751c9a33995afac5e8453bd4f040b2663"},"schema_version":"1.0"},"canonical_sha256":"98684813ba093e53275175fc4153dac81ea908daed04c6afb2f4e6b2bf0bb83f","source":{"kind":"arxiv","id":"0907.5375","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0907.5375","created_at":"2026-05-18T04:15:28Z"},{"alias_kind":"arxiv_version","alias_value":"0907.5375v2","created_at":"2026-05-18T04:15:28Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0907.5375","created_at":"2026-05-18T04:15:28Z"},{"alias_kind":"pith_short_12","alias_value":"TBUEQE52BE7F","created_at":"2026-05-18T12:26:01Z"},{"alias_kind":"pith_short_16","alias_value":"TBUEQE52BE7FGJ2R","created_at":"2026-05-18T12:26:01Z"},{"alias_kind":"pith_short_8","alias_value":"TBUEQE52","created_at":"2026-05-18T12:26:01Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2009:TBUEQE52BE7FGJ2ROX6ECU62ZA","target":"record","payload":{"canonical_record":{"source":{"id":"0907.5375","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.class-ph","submitted_at":"2009-07-30T16:53:49Z","cross_cats_sorted":[],"title_canon_sha256":"6e77bd5337adb0d6b38701669173e50cdbb2c8327d550602193de650b9739407","abstract_canon_sha256":"260789c0beb7a08c24a8740c80c043e751c9a33995afac5e8453bd4f040b2663"},"schema_version":"1.0"},"canonical_sha256":"98684813ba093e53275175fc4153dac81ea908daed04c6afb2f4e6b2bf0bb83f","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T04:15:28.632407Z","signature_b64":"mP0xBIkXHihzguwg1jAuukG4UQn/QMsGBhBfaprQkEUNRQj/qOsSSD4mT90VTpg1U7NcixKOMj8sQ4b/Ls6HBQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"98684813ba093e53275175fc4153dac81ea908daed04c6afb2f4e6b2bf0bb83f","last_reissued_at":"2026-05-18T04:15:28.632019Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T04:15:28.632019Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"0907.5375","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":"2026-05-18T04:15:28Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"H0nJ+VEWVifTRNnbGJcAFSCNlbve7Qeq9cJm9pEhUxu2rnWifSXeJFJ2gZFPSE0qvcSJ+fhjq98cJH8uJeDHDQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-03T14:01:29.747868Z"},"content_sha256":"76aaac1c6ff1332c1c9f854bc179734bf043ff1bf4c79dbc62485893e59bac0f","schema_version":"1.0","event_id":"sha256:76aaac1c6ff1332c1c9f854bc179734bf043ff1bf4c79dbc62485893e59bac0f"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2009:TBUEQE52BE7FGJ2ROX6ECU62ZA","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Gas damping force noise on a macroscopic test body in an infinite gas reservoir","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"physics.class-ph","authors_text":"A. Cavalleri, D. Nicolodi, D. Tombolato, G. Ciani, M. Hueller, P. J. Wass, R. Dolesi, S. Vitale, W. J. Weber","submitted_at":"2009-07-30T16:53:49Z","abstract_excerpt":"We present a simple analysis of the force noise associated with the mechanical damping of the motion of a test body surrounded by a large volume of rarefied gas. The calculation is performed considering the momentum imparted by inelastic collisions against the sides of a cubic test mass, and for other geometries for which the force noise could be an experimental limitation. In addition to arriving at an accurated estimate, by two alternative methods, we discuss the limits of the applicability of this analysis to realistic experimental configurations in which a test body is surrounded by residu"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0907.5375","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":""},"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":"2026-05-18T04:15:28Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"X4gRgZFrDTNKxfkgKzXxvJDKolVal+1Fwuodasw+fPLMGYqgm3xMF7jfL33VpN+7PmKzR/2lG8KXF2i6txD5Dw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-03T14:01:29.748222Z"},"content_sha256":"41eee491b94dafbb743b62c4dc322edd75d66624551b87565f396e651d5caca0","schema_version":"1.0","event_id":"sha256:41eee491b94dafbb743b62c4dc322edd75d66624551b87565f396e651d5caca0"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/TBUEQE52BE7FGJ2ROX6ECU62ZA/bundle.json","state_url":"https://pith.science/pith/TBUEQE52BE7FGJ2ROX6ECU62ZA/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/TBUEQE52BE7FGJ2ROX6ECU62ZA/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":"2026-06-03T14:01:29Z","links":{"resolver":"https://pith.science/pith/TBUEQE52BE7FGJ2ROX6ECU62ZA","bundle":"https://pith.science/pith/TBUEQE52BE7FGJ2ROX6ECU62ZA/bundle.json","state":"https://pith.science/pith/TBUEQE52BE7FGJ2ROX6ECU62ZA/state.json","well_known_bundle":"https://pith.science/.well-known/pith/TBUEQE52BE7FGJ2ROX6ECU62ZA/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2009:TBUEQE52BE7FGJ2ROX6ECU62ZA","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":"260789c0beb7a08c24a8740c80c043e751c9a33995afac5e8453bd4f040b2663","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.class-ph","submitted_at":"2009-07-30T16:53:49Z","title_canon_sha256":"6e77bd5337adb0d6b38701669173e50cdbb2c8327d550602193de650b9739407"},"schema_version":"1.0","source":{"id":"0907.5375","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0907.5375","created_at":"2026-05-18T04:15:28Z"},{"alias_kind":"arxiv_version","alias_value":"0907.5375v2","created_at":"2026-05-18T04:15:28Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0907.5375","created_at":"2026-05-18T04:15:28Z"},{"alias_kind":"pith_short_12","alias_value":"TBUEQE52BE7F","created_at":"2026-05-18T12:26:01Z"},{"alias_kind":"pith_short_16","alias_value":"TBUEQE52BE7FGJ2R","created_at":"2026-05-18T12:26:01Z"},{"alias_kind":"pith_short_8","alias_value":"TBUEQE52","created_at":"2026-05-18T12:26:01Z"}],"graph_snapshots":[{"event_id":"sha256:41eee491b94dafbb743b62c4dc322edd75d66624551b87565f396e651d5caca0","target":"graph","created_at":"2026-05-18T04:15:28Z","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 present a simple analysis of the force noise associated with the mechanical damping of the motion of a test body surrounded by a large volume of rarefied gas. The calculation is performed considering the momentum imparted by inelastic collisions against the sides of a cubic test mass, and for other geometries for which the force noise could be an experimental limitation. In addition to arriving at an accurated estimate, by two alternative methods, we discuss the limits of the applicability of this analysis to realistic experimental configurations in which a test body is surrounded by residu","authors_text":"A. Cavalleri, D. Nicolodi, D. Tombolato, G. Ciani, M. Hueller, P. J. Wass, R. Dolesi, S. Vitale, W. J. Weber","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.class-ph","submitted_at":"2009-07-30T16:53:49Z","title":"Gas damping force noise on a macroscopic test body in an infinite gas reservoir"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0907.5375","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":"sha256:76aaac1c6ff1332c1c9f854bc179734bf043ff1bf4c79dbc62485893e59bac0f","target":"record","created_at":"2026-05-18T04:15:28Z","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":"260789c0beb7a08c24a8740c80c043e751c9a33995afac5e8453bd4f040b2663","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.class-ph","submitted_at":"2009-07-30T16:53:49Z","title_canon_sha256":"6e77bd5337adb0d6b38701669173e50cdbb2c8327d550602193de650b9739407"},"schema_version":"1.0","source":{"id":"0907.5375","kind":"arxiv","version":2}},"canonical_sha256":"98684813ba093e53275175fc4153dac81ea908daed04c6afb2f4e6b2bf0bb83f","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"98684813ba093e53275175fc4153dac81ea908daed04c6afb2f4e6b2bf0bb83f","first_computed_at":"2026-05-18T04:15:28.632019Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T04:15:28.632019Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"mP0xBIkXHihzguwg1jAuukG4UQn/QMsGBhBfaprQkEUNRQj/qOsSSD4mT90VTpg1U7NcixKOMj8sQ4b/Ls6HBQ==","signature_status":"signed_v1","signed_at":"2026-05-18T04:15:28.632407Z","signed_message":"canonical_sha256_bytes"},"source_id":"0907.5375","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:76aaac1c6ff1332c1c9f854bc179734bf043ff1bf4c79dbc62485893e59bac0f","sha256:41eee491b94dafbb743b62c4dc322edd75d66624551b87565f396e651d5caca0"],"state_sha256":"f6df21914366315638b6098eb28929c61693c29495aa1e92293c147ead735933"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"liJaEBFbiiSHnd7mpIiKMmrFMtavyMkOuxZ7b+OzjmDX0he43sPMjMY4KqMyqiATfhm8E/R7ksXx8v5zqXZJDQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-03T14:01:29.750215Z","bundle_sha256":"609511f7f64f744be20c8fae23e5e601819b4c53289035088a36ae1091eceb95"}}