{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2020:VOTHJMQB65V5SHWQCN3EXLF7HL","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":"3a2ae0cc4028644e4af3b8ef13c480148ef2a6623f3c458a4a84037fa3ab146c","cross_cats_sorted":["astro-ph.HE"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2020-11-19T08:31:19Z","title_canon_sha256":"e6f32e4a3ab2c818472e26e16b15c54e496ddb77a1b5d805a35eade4f643c743"},"schema_version":"1.0","source":{"id":"2011.09713","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2011.09713","created_at":"2026-07-05T02:07:52Z"},{"alias_kind":"arxiv_version","alias_value":"2011.09713v1","created_at":"2026-07-05T02:07:52Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2011.09713","created_at":"2026-07-05T02:07:52Z"},{"alias_kind":"pith_short_12","alias_value":"VOTHJMQB65V5","created_at":"2026-07-05T02:07:52Z"},{"alias_kind":"pith_short_16","alias_value":"VOTHJMQB65V5SHWQ","created_at":"2026-07-05T02:07:52Z"},{"alias_kind":"pith_short_8","alias_value":"VOTHJMQB","created_at":"2026-07-05T02:07:52Z"}],"graph_snapshots":[{"event_id":"sha256:e3214e8f22ebb84585634b5abea37f6b35394ea05c0a28740888ad23423658c4","target":"graph","created_at":"2026-07-05T02:07:52Z","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/2011.09713/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We present the Generalized Polarization CALibration pipeline (GPCAL), an automated pipeline for instrumental polarization calibration of very long baseline interferometry (VLBI) data. The pipeline is designed to achieve a high calibration accuracy by means of fitting the instrumental polarization model, including the second-order terms, to multiple calibrators data simultaneously. It also allows using more accurate linear polarization models of calibrators for D-term estimation compared to the conventional way that assumes similar linear polarization and total intensity structures. This assump","authors_text":"Do-Young Byun (KASI, Jongho Park (ASIAA, Keiichi Asada (ASIAA), SNU), UST), Youngjoo Yun (KASI)","cross_cats":["astro-ph.HE"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2020-11-19T08:31:19Z","title":"GPCAL: a generalized calibration pipeline for instrumental polarization in VLBI data"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2011.09713","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:d14073c5054bff86f21d3477161249721ee5234f50b8e8a5af0f6ba55790e6c6","target":"record","created_at":"2026-07-05T02:07:52Z","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":"3a2ae0cc4028644e4af3b8ef13c480148ef2a6623f3c458a4a84037fa3ab146c","cross_cats_sorted":["astro-ph.HE"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2020-11-19T08:31:19Z","title_canon_sha256":"e6f32e4a3ab2c818472e26e16b15c54e496ddb77a1b5d805a35eade4f643c743"},"schema_version":"1.0","source":{"id":"2011.09713","kind":"arxiv","version":1}},"canonical_sha256":"aba674b201f76bd91ed013764bacbf3acac1bb5bab565266e6efe017464c4d09","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"aba674b201f76bd91ed013764bacbf3acac1bb5bab565266e6efe017464c4d09","first_computed_at":"2026-07-05T02:07:52.271486Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T02:07:52.271486Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"0U8oXNj06d5sce5TbU0wRLhW8Ga7sHmorx5Za2zYeLfqb5p40DDf3BeyC0TA3S0jNcss12CKwqRajeqS0rdCCQ==","signature_status":"signed_v1","signed_at":"2026-07-05T02:07:52.271922Z","signed_message":"canonical_sha256_bytes"},"source_id":"2011.09713","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:d14073c5054bff86f21d3477161249721ee5234f50b8e8a5af0f6ba55790e6c6","sha256:e3214e8f22ebb84585634b5abea37f6b35394ea05c0a28740888ad23423658c4"],"state_sha256":"cad45d0733ed754a18bc94098e2f6b829ccc0cbf01aef4b504ea84a16e69ddf0"}