{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2008:XISUACDGH72IOIG7LJMSP6NCAS","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":"168e6fc290ae328ac7630a3cc726c61f4d448940e7392f6e5afcd2e4a7d01c91","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph","submitted_at":"2008-07-12T21:51:38Z","title_canon_sha256":"80dc16f8f96f4484f61275ea79a7481706e983cbd639ccc0d724f21a1455d6c4"},"schema_version":"1.0","source":{"id":"0807.2001","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0807.2001","created_at":"2026-07-04T17:11:47Z"},{"alias_kind":"arxiv_version","alias_value":"0807.2001v1","created_at":"2026-07-04T17:11:47Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0807.2001","created_at":"2026-07-04T17:11:47Z"},{"alias_kind":"pith_short_12","alias_value":"XISUACDGH72I","created_at":"2026-07-04T17:11:47Z"},{"alias_kind":"pith_short_16","alias_value":"XISUACDGH72IOIG7","created_at":"2026-07-04T17:11:47Z"},{"alias_kind":"pith_short_8","alias_value":"XISUACDG","created_at":"2026-07-04T17:11:47Z"}],"graph_snapshots":[{"event_id":"sha256:b4b209807359218761695804aa491ab18a1831e64576480dc78b14ecac81da3e","target":"graph","created_at":"2026-07-04T17:11:47Z","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/0807.2001/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Fringe tracking in interferometers is typically analyzed with the implicit assumption that there is a single phase associated with each telescope in the array. If the telescopes have apertures significantly larger than r0 and only partial adaptive optics correction, then the phase measured by a fringe sensor may differ significantly from the \"piston\" component of the aperture phase. In some cases, speckle noise will cause \"branch points\" in the measured phase as a function of time, causing large and sudden jumps in the phase. We present simulations showing these effects in order to understand ","authors_text":"Christopher A. Haniff, David F. Buscher, Fabien Baron, John S. Young","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph","submitted_at":"2008-07-12T21:51:38Z","title":"Fringe tracking and spatial filtering: phase jumps and dropouts"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0807.2001","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":"sha256:631d5fa1b11542ac4eb39240a211f4c2b4cc3b5ffebb583a66f1dd4d76fd0d03","target":"record","created_at":"2026-07-04T17:11:47Z","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":"168e6fc290ae328ac7630a3cc726c61f4d448940e7392f6e5afcd2e4a7d01c91","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph","submitted_at":"2008-07-12T21:51:38Z","title_canon_sha256":"80dc16f8f96f4484f61275ea79a7481706e983cbd639ccc0d724f21a1455d6c4"},"schema_version":"1.0","source":{"id":"0807.2001","kind":"arxiv","version":1}},"canonical_sha256":"ba254008663ff48720df5a5927f9a204babbe3d6c7e435bb3d02020ec14ce1b7","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"ba254008663ff48720df5a5927f9a204babbe3d6c7e435bb3d02020ec14ce1b7","first_computed_at":"2026-07-04T17:11:47.063258Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-04T17:11:47.063258Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"vNCd9R4ToQXia9V8EJLC+Xk6Lo5ks/zDHtssMjYKszJ8W5czxAbQSXftFVH9YUg8uczbnFLqCE0NfCwmW81QBg==","signature_status":"signed_v1","signed_at":"2026-07-04T17:11:47.063688Z","signed_message":"canonical_sha256_bytes"},"source_id":"0807.2001","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:631d5fa1b11542ac4eb39240a211f4c2b4cc3b5ffebb583a66f1dd4d76fd0d03","sha256:b4b209807359218761695804aa491ab18a1831e64576480dc78b14ecac81da3e"],"state_sha256":"2b71931aee060ffe257bbac98ca5201df8ea8ea3b9001e51391228f9dfb09db6"}