{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2018:2LIVSL3VLC5UA3N4HK45DEPYI7","short_pith_number":"pith:2LIVSL3V","schema_version":"1.0","canonical_sha256":"d2d1592f7558bb406dbc3ab9d191f847d7351a43d9b29f6e2882b9e63dee595b","source":{"kind":"arxiv","id":"1807.10332","version":1},"attestation_state":"computed","paper":{"title":"Constraining Theories of SiO Maser Polarization: Analysis of a $pi$/2 EVPA Change","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.SR","authors_text":"Athol Kemball, Malcolm Gray, Taylor Tobin","submitted_at":"2018-07-26T19:26:03Z","abstract_excerpt":"The full theory of polarized SiO maser emission from the near-circumstellar environment of Asymptotic Giant Branch stars has been the subject of debate, with theories ranging from classical Zeeman origins to predominantly non-Zeeman anisotropic excitation or propagation effects. Features with an internal electric vector position angle (EVPA) rotation of $\\sim \\pi /2$ offer unique constraints on theoretical models. In this work, results are presented for one such feature that persisted across five epochs of SiO $\\nu=1, J=1-0$ VLBA observations of TX Cam. We examine the fit to the predicted depe"},"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":"1807.10332","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2018-07-26T19:26:03Z","cross_cats_sorted":[],"title_canon_sha256":"356ff61ca65a80afa3aa2e022c4df21bf4004fabad3825d735bf5b7d046acfa6","abstract_canon_sha256":"d81763603bb6b23fda49e79e25f0f586baca1e0f5abdab465824b510d36fd3ba"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:09:40.913352Z","signature_b64":"Iw8RZFiRb1EgUIg9U85/3SrYDzGfWvLzdca4JK0h+KoukdQlet+ujOalEF5G4TUeppukJkGqhYCUpUZHrr/0AQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"d2d1592f7558bb406dbc3ab9d191f847d7351a43d9b29f6e2882b9e63dee595b","last_reissued_at":"2026-05-18T00:09:40.912614Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:09:40.912614Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Constraining Theories of SiO Maser Polarization: Analysis of a $pi$/2 EVPA Change","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.SR","authors_text":"Athol Kemball, Malcolm Gray, Taylor Tobin","submitted_at":"2018-07-26T19:26:03Z","abstract_excerpt":"The full theory of polarized SiO maser emission from the near-circumstellar environment of Asymptotic Giant Branch stars has been the subject of debate, with theories ranging from classical Zeeman origins to predominantly non-Zeeman anisotropic excitation or propagation effects. Features with an internal electric vector position angle (EVPA) rotation of $\\sim \\pi /2$ offer unique constraints on theoretical models. In this work, results are presented for one such feature that persisted across five epochs of SiO $\\nu=1, J=1-0$ VLBA observations of TX Cam. We examine the fit to the predicted depe"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1807.10332","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":"1807.10332","created_at":"2026-05-18T00:09:40.912734+00:00"},{"alias_kind":"arxiv_version","alias_value":"1807.10332v1","created_at":"2026-05-18T00:09:40.912734+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1807.10332","created_at":"2026-05-18T00:09:40.912734+00:00"},{"alias_kind":"pith_short_12","alias_value":"2LIVSL3VLC5U","created_at":"2026-05-18T12:32:02.567920+00:00"},{"alias_kind":"pith_short_16","alias_value":"2LIVSL3VLC5UA3N4","created_at":"2026-05-18T12:32:02.567920+00:00"},{"alias_kind":"pith_short_8","alias_value":"2LIVSL3V","created_at":"2026-05-18T12:32:02.567920+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/2LIVSL3VLC5UA3N4HK45DEPYI7","json":"https://pith.science/pith/2LIVSL3VLC5UA3N4HK45DEPYI7.json","graph_json":"https://pith.science/api/pith-number/2LIVSL3VLC5UA3N4HK45DEPYI7/graph.json","events_json":"https://pith.science/api/pith-number/2LIVSL3VLC5UA3N4HK45DEPYI7/events.json","paper":"https://pith.science/paper/2LIVSL3V"},"agent_actions":{"view_html":"https://pith.science/pith/2LIVSL3VLC5UA3N4HK45DEPYI7","download_json":"https://pith.science/pith/2LIVSL3VLC5UA3N4HK45DEPYI7.json","view_paper":"https://pith.science/paper/2LIVSL3V","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1807.10332&json=true","fetch_graph":"https://pith.science/api/pith-number/2LIVSL3VLC5UA3N4HK45DEPYI7/graph.json","fetch_events":"https://pith.science/api/pith-number/2LIVSL3VLC5UA3N4HK45DEPYI7/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/2LIVSL3VLC5UA3N4HK45DEPYI7/action/timestamp_anchor","attest_storage":"https://pith.science/pith/2LIVSL3VLC5UA3N4HK45DEPYI7/action/storage_attestation","attest_author":"https://pith.science/pith/2LIVSL3VLC5UA3N4HK45DEPYI7/action/author_attestation","sign_citation":"https://pith.science/pith/2LIVSL3VLC5UA3N4HK45DEPYI7/action/citation_signature","submit_replication":"https://pith.science/pith/2LIVSL3VLC5UA3N4HK45DEPYI7/action/replication_record"}},"created_at":"2026-05-18T00:09:40.912734+00:00","updated_at":"2026-05-18T00:09:40.912734+00:00"}