{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:NGW5BCPU2AIUXVCHAE4GOYABYL","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":"4f6905897150513c7e889e99ab591dcb5d03f661659521c3c9d96fc5ad446c6f","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2018-02-03T21:15:16Z","title_canon_sha256":"0f2abe45eaa661578a6d3f249bb4b83331632ef49007351d16a8b3456e914df4"},"schema_version":"1.0","source":{"id":"1802.01031","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1802.01031","created_at":"2026-05-18T00:14:08Z"},{"alias_kind":"arxiv_version","alias_value":"1802.01031v1","created_at":"2026-05-18T00:14:08Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1802.01031","created_at":"2026-05-18T00:14:08Z"},{"alias_kind":"pith_short_12","alias_value":"NGW5BCPU2AIU","created_at":"2026-05-18T12:32:40Z"},{"alias_kind":"pith_short_16","alias_value":"NGW5BCPU2AIUXVCH","created_at":"2026-05-18T12:32:40Z"},{"alias_kind":"pith_short_8","alias_value":"NGW5BCPU","created_at":"2026-05-18T12:32:40Z"}],"graph_snapshots":[{"event_id":"sha256:4d039a783f89cdb55ac367a9da7373194e5e14b1c69e322dd67b31806887a3ac","target":"graph","created_at":"2026-05-18T00:14:08Z","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"},"paper":{"abstract_excerpt":"The goal of this work is to study the cool, active binary star $\\sigma^2$ CrB, focussing on its magnetic field. We used Stokes $IV$ data from the twin spectropolarimeters Narval at the TBL and ESPaDOnS at the CFHT. The least-squares deconvolution multi-line technique was used to increase the signal-to-noise ratio of the data. We then applied a new binary Zeeman-Doppler imaging code to reconstruct simultaneously the magnetic topology and brightness distribution of both components. This analysis was carried out for two observational epochs in 2014 and 2017. A previously unconfirmed magnetic fiel","authors_text":"C. Neiner, E. Alecian, G.A. Wade, J. Morin, L. Ros\\'en, O. Kochukhov, the BinaMIcS collaboration","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2018-02-03T21:15:16Z","title":"Magnetic field topology of the cool, active, short-period binary system $\\sigma^2$ Coronae Borealis"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1802.01031","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":"sha256:3d6748bd764f751ffcf29a1199340274c269fde05189274e6e24544caa41d287","target":"record","created_at":"2026-05-18T00:14:08Z","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":"4f6905897150513c7e889e99ab591dcb5d03f661659521c3c9d96fc5ad446c6f","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2018-02-03T21:15:16Z","title_canon_sha256":"0f2abe45eaa661578a6d3f249bb4b83331632ef49007351d16a8b3456e914df4"},"schema_version":"1.0","source":{"id":"1802.01031","kind":"arxiv","version":1}},"canonical_sha256":"69add089f4d0114bd4470138676001c2f8dce721c66bc29702071bebeedd7933","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"69add089f4d0114bd4470138676001c2f8dce721c66bc29702071bebeedd7933","first_computed_at":"2026-05-18T00:14:08.656275Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:14:08.656275Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"IeSuwHiMtsKCcoiLEgI0U1Q15HVIaieMrypMueMgwmC2yCOwBDsIEW5E87noYxCdec6yGxGhrfGUHObAsBYTDA==","signature_status":"signed_v1","signed_at":"2026-05-18T00:14:08.656789Z","signed_message":"canonical_sha256_bytes"},"source_id":"1802.01031","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:3d6748bd764f751ffcf29a1199340274c269fde05189274e6e24544caa41d287","sha256:4d039a783f89cdb55ac367a9da7373194e5e14b1c69e322dd67b31806887a3ac"],"state_sha256":"aa28dea758ff1fbeee4fc4459208cda9322ab32f50801d284f6d9abdf3693662"}