{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2015:6QTWYGH4HTHVG5IFSBM4TGM6XW","short_pith_number":"pith:6QTWYGH4","schema_version":"1.0","canonical_sha256":"f4276c18fc3ccf5375059059c9999ebda5f574a5635d4eee7e241dbc66bf341d","source":{"kind":"arxiv","id":"1503.02236","version":1},"attestation_state":"computed","paper":{"title":"A high-sensitivity polarimeter using a ferro-electric liquid crystal modulator","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.EP","astro-ph.SR"],"primary_cat":"astro-ph.IM","authors_text":"Daniel V. Cotton, Jeremy Bailey, J.H. Hough, Kimberly Bott, Lucyna Kedziora-Chudczer, P.W. Lucas","submitted_at":"2015-03-08T01:45:50Z","abstract_excerpt":"We describe the HIgh Precision Polarimetric Instrument (HIPPI), a polarimeter built at UNSW Australia and used on the Anglo-Australian Telescope (AAT). HIPPI is an aperture polarimeter using a ferro-electric liquid crystal modulator. HIPPI measures the linear polarization of starlight with a sensitivity in fractional polarization of ~4 x 10$^{-6}$ on low polarization objects and a precision of better than 0.01% on highly polarized stars. The detectors have a high dynamic range allowing observations of the brightest stars in the sky as well as much fainter objects. The telescope polarization of"},"verification_status":{"content_addressed":true,"pith_receipt":true,"author_attested":false,"weak_author_claims":0,"strong_author_claims":0,"externally_anchored":false,"storage_verified":false,"citation_signatures":0,"replication_records":0,"graph_snapshot":true,"references_resolved":false,"formal_links_present":false},"canonical_record":{"source":{"id":"1503.02236","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2015-03-08T01:45:50Z","cross_cats_sorted":["astro-ph.EP","astro-ph.SR"],"title_canon_sha256":"14fb75f442d10ded93b7c844cac68a36ba7c54df9b93fd09b97d16b34f0f8ef7","abstract_canon_sha256":"4b5601fa631f4ec719f1a247fae88a323eb94a4628e87193207e25f8fc3a0374"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:40:52.967467Z","signature_b64":"U5v+bup8SOyhhSpo9RQMRT0S+G8+aZtlK0YLT4Iccy6e4KJhRzhysKPYt7QdlBAB2ngGvxtkSCkKsAQ2sQMhCQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"f4276c18fc3ccf5375059059c9999ebda5f574a5635d4eee7e241dbc66bf341d","last_reissued_at":"2026-05-18T01:40:52.966755Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:40:52.966755Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"A high-sensitivity polarimeter using a ferro-electric liquid crystal modulator","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.EP","astro-ph.SR"],"primary_cat":"astro-ph.IM","authors_text":"Daniel V. Cotton, Jeremy Bailey, J.H. Hough, Kimberly Bott, Lucyna Kedziora-Chudczer, P.W. Lucas","submitted_at":"2015-03-08T01:45:50Z","abstract_excerpt":"We describe the HIgh Precision Polarimetric Instrument (HIPPI), a polarimeter built at UNSW Australia and used on the Anglo-Australian Telescope (AAT). HIPPI is an aperture polarimeter using a ferro-electric liquid crystal modulator. HIPPI measures the linear polarization of starlight with a sensitivity in fractional polarization of ~4 x 10$^{-6}$ on low polarization objects and a precision of better than 0.01% on highly polarized stars. The detectors have a high dynamic range allowing observations of the brightest stars in the sky as well as much fainter objects. The telescope polarization of"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1503.02236","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"},"aliases":[{"alias_kind":"arxiv","alias_value":"1503.02236","created_at":"2026-05-18T01:40:52.966883+00:00"},{"alias_kind":"arxiv_version","alias_value":"1503.02236v1","created_at":"2026-05-18T01:40:52.966883+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1503.02236","created_at":"2026-05-18T01:40:52.966883+00:00"},{"alias_kind":"pith_short_12","alias_value":"6QTWYGH4HTHV","created_at":"2026-05-18T12:29:07.941421+00:00"},{"alias_kind":"pith_short_16","alias_value":"6QTWYGH4HTHVG5IF","created_at":"2026-05-18T12:29:07.941421+00:00"},{"alias_kind":"pith_short_8","alias_value":"6QTWYGH4","created_at":"2026-05-18T12:29:07.941421+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":0,"internal_anchor_count":0,"sample":[]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/6QTWYGH4HTHVG5IFSBM4TGM6XW","json":"https://pith.science/pith/6QTWYGH4HTHVG5IFSBM4TGM6XW.json","graph_json":"https://pith.science/api/pith-number/6QTWYGH4HTHVG5IFSBM4TGM6XW/graph.json","events_json":"https://pith.science/api/pith-number/6QTWYGH4HTHVG5IFSBM4TGM6XW/events.json","paper":"https://pith.science/paper/6QTWYGH4"},"agent_actions":{"view_html":"https://pith.science/pith/6QTWYGH4HTHVG5IFSBM4TGM6XW","download_json":"https://pith.science/pith/6QTWYGH4HTHVG5IFSBM4TGM6XW.json","view_paper":"https://pith.science/paper/6QTWYGH4","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1503.02236&json=true","fetch_graph":"https://pith.science/api/pith-number/6QTWYGH4HTHVG5IFSBM4TGM6XW/graph.json","fetch_events":"https://pith.science/api/pith-number/6QTWYGH4HTHVG5IFSBM4TGM6XW/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/6QTWYGH4HTHVG5IFSBM4TGM6XW/action/timestamp_anchor","attest_storage":"https://pith.science/pith/6QTWYGH4HTHVG5IFSBM4TGM6XW/action/storage_attestation","attest_author":"https://pith.science/pith/6QTWYGH4HTHVG5IFSBM4TGM6XW/action/author_attestation","sign_citation":"https://pith.science/pith/6QTWYGH4HTHVG5IFSBM4TGM6XW/action/citation_signature","submit_replication":"https://pith.science/pith/6QTWYGH4HTHVG5IFSBM4TGM6XW/action/replication_record"}},"created_at":"2026-05-18T01:40:52.966883+00:00","updated_at":"2026-05-18T01:40:52.966883+00:00"}