{"paper":{"title":"Frequency Phase Transfer for Future Millimetre Arrays with Arbitrary Frequency Ratios","license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.IM","authors_text":"Athol Kemball, Roger Deane, Senkhosi Simelane","submitted_at":"2026-06-25T15:16:14Z","abstract_excerpt":"Non-dispersive tropospheric turbulence-induced phase delays enforce significant, often dominant, limitations to the imaging fidelity and dynamic range in (sub-)millimetre astronomy. Frequency Phase Transfer (FPT), which removes such delays from high-frequency data using simultaneous lower-frequency observations, has become increasingly viable with the advent of shared-optical-path multi-band receivers and is a key motivator of the Event Horizon Telescope Collaboration's ambitions to add 86-GHz and 345-GHz bands alongside its existing 230-GHz band. However, existing FPT algorithms break down fo"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2606.27143","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2606.27143/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"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"}