{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2017:HA7L3UBFUMEEQPORFSXJN4TVDV","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":"38702d6c069a0966cabf31237f33c1596828147109f04b0c493acee368e76212","cross_cats_sorted":["astro-ph.HE"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2017-12-01T14:54:26Z","title_canon_sha256":"742f9de8ee4b734b2c5f5594182d24f8c5c803602232592a22f0781008b85bc1"},"schema_version":"1.0","source":{"id":"1712.00345","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1712.00345","created_at":"2026-05-18T00:27:17Z"},{"alias_kind":"arxiv_version","alias_value":"1712.00345v1","created_at":"2026-05-18T00:27:17Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1712.00345","created_at":"2026-05-18T00:27:17Z"},{"alias_kind":"pith_short_12","alias_value":"HA7L3UBFUMEE","created_at":"2026-05-18T12:31:18Z"},{"alias_kind":"pith_short_16","alias_value":"HA7L3UBFUMEEQPOR","created_at":"2026-05-18T12:31:18Z"},{"alias_kind":"pith_short_8","alias_value":"HA7L3UBF","created_at":"2026-05-18T12:31:18Z"}],"graph_snapshots":[{"event_id":"sha256:d25a819507be966e76282385390e15725644549a52ecfdfc2c2d15fcacedb843","target":"graph","created_at":"2026-05-18T00:27:17Z","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":"A significant fraction of high-mass X-ray binaries are supergiant fast X-ray transients (SFXTs). The prime model for the physics governing their X-ray behaviour suggests that the winds of donor OB supergiants are magnetized. To investigate if magnetic fields are indeed present in the optical counterparts of such systems, we acquired low-resolution spectropolarimetric observations of the two optically brightest SFXTs, IGR J08408-4503 and IGR J11215-5952 with the ESO FORS2 instrument during two different observing runs. No field detection at a significance level of 3sigma was achieved for IGR J0","authors_text":"A.F. Kholtygin, K. Postnov, L. Sidoli, M. Sch\\\"oller, P. Steinbrunner, S. Hubrig, S.P. Jarvinen","cross_cats":["astro-ph.HE"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2017-12-01T14:54:26Z","title":"A search for the presence of magnetic fields in the two Supergiant Fast X-ray Transients IGR J08408-4503 and IGR J11215-5952"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1712.00345","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":"sha256:5ecf86e3f79ab08d0e728674202183c388df2b999ce83456fa9ccaaa015ae9de","target":"record","created_at":"2026-05-18T00:27:17Z","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":"38702d6c069a0966cabf31237f33c1596828147109f04b0c493acee368e76212","cross_cats_sorted":["astro-ph.HE"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2017-12-01T14:54:26Z","title_canon_sha256":"742f9de8ee4b734b2c5f5594182d24f8c5c803602232592a22f0781008b85bc1"},"schema_version":"1.0","source":{"id":"1712.00345","kind":"arxiv","version":1}},"canonical_sha256":"383ebdd025a308483dd12cae96f2751d4b1afef47382c42bcb483188ce461dc2","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"383ebdd025a308483dd12cae96f2751d4b1afef47382c42bcb483188ce461dc2","first_computed_at":"2026-05-18T00:27:17.519752Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:27:17.519752Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"N7z8GaZ8BkbvFcwYQRuRjln9wcQx24vGfK11Amg2sVeWmFIDi9ZUFq08nurB/9G4jtLT9e07nIBVrxpFxptPDg==","signature_status":"signed_v1","signed_at":"2026-05-18T00:27:17.520212Z","signed_message":"canonical_sha256_bytes"},"source_id":"1712.00345","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:5ecf86e3f79ab08d0e728674202183c388df2b999ce83456fa9ccaaa015ae9de","sha256:d25a819507be966e76282385390e15725644549a52ecfdfc2c2d15fcacedb843"],"state_sha256":"0e2dcf8a03ce656b9673774f9a49770f84e55abb13e70a432385611081113fe9"}