{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2012:EPMDIB4PUDOT5352KJ5WO2ZQF2","short_pith_number":"pith:EPMDIB4P","canonical_record":{"source":{"id":"1203.4476","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2012-03-20T15:43:38Z","cross_cats_sorted":["gr-qc","physics.ins-det","physics.optics","physics.space-ph"],"title_canon_sha256":"57f2d0bb610b9172e09748bca4b049215930fe56c8296d22ebdac6985d38d8f0","abstract_canon_sha256":"e30bce7f5a1f29257b41fabd7f0dafbe82fec18145abeceb23d49bef02d8b0d0"},"schema_version":"1.0"},"canonical_sha256":"23d834078fa0dd3eefba527b676b302e9bc80daf193efce0aedea0955a8c2c56","source":{"kind":"arxiv","id":"1203.4476","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1203.4476","created_at":"2026-05-18T03:59:38Z"},{"alias_kind":"arxiv_version","alias_value":"1203.4476v1","created_at":"2026-05-18T03:59:38Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1203.4476","created_at":"2026-05-18T03:59:38Z"},{"alias_kind":"pith_short_12","alias_value":"EPMDIB4PUDOT","created_at":"2026-05-18T12:27:04Z"},{"alias_kind":"pith_short_16","alias_value":"EPMDIB4PUDOT5352","created_at":"2026-05-18T12:27:04Z"},{"alias_kind":"pith_short_8","alias_value":"EPMDIB4P","created_at":"2026-05-18T12:27:04Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2012:EPMDIB4PUDOT5352KJ5WO2ZQF2","target":"record","payload":{"canonical_record":{"source":{"id":"1203.4476","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2012-03-20T15:43:38Z","cross_cats_sorted":["gr-qc","physics.ins-det","physics.optics","physics.space-ph"],"title_canon_sha256":"57f2d0bb610b9172e09748bca4b049215930fe56c8296d22ebdac6985d38d8f0","abstract_canon_sha256":"e30bce7f5a1f29257b41fabd7f0dafbe82fec18145abeceb23d49bef02d8b0d0"},"schema_version":"1.0"},"canonical_sha256":"23d834078fa0dd3eefba527b676b302e9bc80daf193efce0aedea0955a8c2c56","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T03:59:38.989531Z","signature_b64":"cS0Cyg7y9TdL+aS4+efpV94u8fpNN1NoY0wcqUw09z6IaELMEGlRXkjN2Ru6pLdsl6dFh6Ct0RClGlZcI0eGBg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"23d834078fa0dd3eefba527b676b302e9bc80daf193efce0aedea0955a8c2c56","last_reissued_at":"2026-05-18T03:59:38.988816Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T03:59:38.988816Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1203.4476","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":"2026-05-18T03:59:38Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"WU6J6lnoz6lYeQryvWS8+bLF5yINzZWbyfSIseAI14UKM2Nhbvd+NK3B4E7VLuy2MRTdG8g+IlxsIoCeHAQxDw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-06T18:45:32.941264Z"},"content_sha256":"27fa0dce496c858a3c9e3b1dc5ac15cafb355e63da8dd1f50b34027799dab213","schema_version":"1.0","event_id":"sha256:27fa0dce496c858a3c9e3b1dc5ac15cafb355e63da8dd1f50b34027799dab213"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2012:EPMDIB4PUDOT5352KJ5WO2ZQF2","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Subtraction of test mass angular noise in the LISA Technology Package interferometer","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["gr-qc","physics.ins-det","physics.optics","physics.space-ph"],"primary_cat":"astro-ph.IM","authors_text":"Felipe Guzm\\'an Cervantes, Frank Steier, Gerhard Heinzel, Gudrun Wanner, Karsten Danzmann","submitted_at":"2012-03-20T15:43:38Z","abstract_excerpt":"We present recent sensitivity measurements of the LISA Technology Package interferometer with articulated mirrors as test masses, actuated by piezo-electric transducers. The required longitudinal displacement resolution of 9 pm/sqrt[Hz] above 3 mHz has been demonstrated with an angular noise that corresponds to the expected in on-orbit operation. The excess noise contribution of this test mass jitter onto the sensitive displacement readout was completely subtracted by fitting the angular interferometric data streams to the longitudinal displacement measurement. Thus, this cross-coupling consti"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1203.4476","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":"2026-05-18T03:59:38Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"A3V3a6a9psXoHJmvquSeucnTFUTxBjgAzEekjKnk8WBXmr4T8oeZ14LXZkwiIte+u1tQ4nDlTlDcDHOuOyHxAg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-06T18:45:32.941742Z"},"content_sha256":"1d6ed439e6017a9f6b4fee26aa8fc1db5767be1c8ddb19dbe7f815932c8e91ee","schema_version":"1.0","event_id":"sha256:1d6ed439e6017a9f6b4fee26aa8fc1db5767be1c8ddb19dbe7f815932c8e91ee"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/EPMDIB4PUDOT5352KJ5WO2ZQF2/bundle.json","state_url":"https://pith.science/pith/EPMDIB4PUDOT5352KJ5WO2ZQF2/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/EPMDIB4PUDOT5352KJ5WO2ZQF2/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":"2026-06-06T18:45:32Z","links":{"resolver":"https://pith.science/pith/EPMDIB4PUDOT5352KJ5WO2ZQF2","bundle":"https://pith.science/pith/EPMDIB4PUDOT5352KJ5WO2ZQF2/bundle.json","state":"https://pith.science/pith/EPMDIB4PUDOT5352KJ5WO2ZQF2/state.json","well_known_bundle":"https://pith.science/.well-known/pith/EPMDIB4PUDOT5352KJ5WO2ZQF2/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2012:EPMDIB4PUDOT5352KJ5WO2ZQF2","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":"e30bce7f5a1f29257b41fabd7f0dafbe82fec18145abeceb23d49bef02d8b0d0","cross_cats_sorted":["gr-qc","physics.ins-det","physics.optics","physics.space-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2012-03-20T15:43:38Z","title_canon_sha256":"57f2d0bb610b9172e09748bca4b049215930fe56c8296d22ebdac6985d38d8f0"},"schema_version":"1.0","source":{"id":"1203.4476","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1203.4476","created_at":"2026-05-18T03:59:38Z"},{"alias_kind":"arxiv_version","alias_value":"1203.4476v1","created_at":"2026-05-18T03:59:38Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1203.4476","created_at":"2026-05-18T03:59:38Z"},{"alias_kind":"pith_short_12","alias_value":"EPMDIB4PUDOT","created_at":"2026-05-18T12:27:04Z"},{"alias_kind":"pith_short_16","alias_value":"EPMDIB4PUDOT5352","created_at":"2026-05-18T12:27:04Z"},{"alias_kind":"pith_short_8","alias_value":"EPMDIB4P","created_at":"2026-05-18T12:27:04Z"}],"graph_snapshots":[{"event_id":"sha256:1d6ed439e6017a9f6b4fee26aa8fc1db5767be1c8ddb19dbe7f815932c8e91ee","target":"graph","created_at":"2026-05-18T03:59:38Z","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 recent sensitivity measurements of the LISA Technology Package interferometer with articulated mirrors as test masses, actuated by piezo-electric transducers. The required longitudinal displacement resolution of 9 pm/sqrt[Hz] above 3 mHz has been demonstrated with an angular noise that corresponds to the expected in on-orbit operation. The excess noise contribution of this test mass jitter onto the sensitive displacement readout was completely subtracted by fitting the angular interferometric data streams to the longitudinal displacement measurement. Thus, this cross-coupling consti","authors_text":"Felipe Guzm\\'an Cervantes, Frank Steier, Gerhard Heinzel, Gudrun Wanner, Karsten Danzmann","cross_cats":["gr-qc","physics.ins-det","physics.optics","physics.space-ph"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2012-03-20T15:43:38Z","title":"Subtraction of test mass angular noise in the LISA Technology Package interferometer"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1203.4476","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":"sha256:27fa0dce496c858a3c9e3b1dc5ac15cafb355e63da8dd1f50b34027799dab213","target":"record","created_at":"2026-05-18T03:59:38Z","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":"e30bce7f5a1f29257b41fabd7f0dafbe82fec18145abeceb23d49bef02d8b0d0","cross_cats_sorted":["gr-qc","physics.ins-det","physics.optics","physics.space-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2012-03-20T15:43:38Z","title_canon_sha256":"57f2d0bb610b9172e09748bca4b049215930fe56c8296d22ebdac6985d38d8f0"},"schema_version":"1.0","source":{"id":"1203.4476","kind":"arxiv","version":1}},"canonical_sha256":"23d834078fa0dd3eefba527b676b302e9bc80daf193efce0aedea0955a8c2c56","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"23d834078fa0dd3eefba527b676b302e9bc80daf193efce0aedea0955a8c2c56","first_computed_at":"2026-05-18T03:59:38.988816Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T03:59:38.988816Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"cS0Cyg7y9TdL+aS4+efpV94u8fpNN1NoY0wcqUw09z6IaELMEGlRXkjN2Ru6pLdsl6dFh6Ct0RClGlZcI0eGBg==","signature_status":"signed_v1","signed_at":"2026-05-18T03:59:38.989531Z","signed_message":"canonical_sha256_bytes"},"source_id":"1203.4476","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:27fa0dce496c858a3c9e3b1dc5ac15cafb355e63da8dd1f50b34027799dab213","sha256:1d6ed439e6017a9f6b4fee26aa8fc1db5767be1c8ddb19dbe7f815932c8e91ee"],"state_sha256":"39d88eb56fce11be45e743580910fc2974db308f9ff78707ae22a5f860ad498e"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"izdxlJZC6IQwTSm4EXyErVc2JFw/TyXwv7yVomkA/ZB/18suNy/gJvvzmlxac9KrAcsCKhA6GeDNQQEAI1HyAw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-06T18:45:32.944727Z","bundle_sha256":"bd13ff36de411932201717a2d25df95f3b61972db44faef0240556c79182e8ef"}}