{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2017:TETSN4PZ3TBGNRG4BFZQ2PNR7V","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":"d02735a6b36f7760b02f067b5ca2eed9c60720a02df8cf410bb51bc16d72ea14","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2017-08-03T18:00:09Z","title_canon_sha256":"ebae110b7f9a3def379684626c21522c572282fc9e826c990da4092006833381"},"schema_version":"1.0","source":{"id":"1708.01261","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1708.01261","created_at":"2026-05-18T00:32:39Z"},{"alias_kind":"arxiv_version","alias_value":"1708.01261v2","created_at":"2026-05-18T00:32:39Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1708.01261","created_at":"2026-05-18T00:32:39Z"},{"alias_kind":"pith_short_12","alias_value":"TETSN4PZ3TBG","created_at":"2026-05-18T12:31:46Z"},{"alias_kind":"pith_short_16","alias_value":"TETSN4PZ3TBGNRG4","created_at":"2026-05-18T12:31:46Z"},{"alias_kind":"pith_short_8","alias_value":"TETSN4PZ","created_at":"2026-05-18T12:31:46Z"}],"graph_snapshots":[{"event_id":"sha256:099956ea549b0e60ceac0b3ba65fc27670dfaf4d45f191af75eaed246f8b5145","target":"graph","created_at":"2026-05-18T00:32:39Z","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":"Context: HD 54879 (O9.7 V) is one of a dozen O-stars for which an organized atmospheric magnetic field has been detected. To gain insights into the interplay between atmospheres, winds, and magnetic fields of massive stars, we acquired UV and X-ray data of HD 54879 using the Hubble Space Telescope and the XMM-Newton satellite. In addition, 35 optical amateur spectra were secured to study the variability of HD 54879. A multiwavelength (X-ray to optical) spectral analysis is performed using the Potsdam Wolf-Rayet (PoWR) model atmosphere code and the xspec software.\n  Results: The photospheric pa","authors_text":"A. A. C. Sander, H. Todt, I. Ilyin, L. M. Oskinova, P. Luckas, R. Hainich, S. Hubrig, S. P. J\\\"arvinen, T. Shenar, W.-R. Hamann","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2017-08-03T18:00:09Z","title":"A combined HST and XMM-Newton campaign for the magnetic O9.7 V star HD 54879: towards constraining the weak-wind problem of massive stars"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1708.01261","kind":"arxiv","version":2},"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:d5ac82576b8ee00f0970caa9803dbb177e435aedc3c62096665190928a968067","target":"record","created_at":"2026-05-18T00:32:39Z","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":"d02735a6b36f7760b02f067b5ca2eed9c60720a02df8cf410bb51bc16d72ea14","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2017-08-03T18:00:09Z","title_canon_sha256":"ebae110b7f9a3def379684626c21522c572282fc9e826c990da4092006833381"},"schema_version":"1.0","source":{"id":"1708.01261","kind":"arxiv","version":2}},"canonical_sha256":"992726f1f9dcc266c4dc09730d3db1fd7fbc727fdd955474c3cd5d4106fecf4d","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"992726f1f9dcc266c4dc09730d3db1fd7fbc727fdd955474c3cd5d4106fecf4d","first_computed_at":"2026-05-18T00:32:39.548602Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:32:39.548602Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"1VvhLCOG9bsZj4sxK4WxNkROE6KCm7MOMzx909SFJhc+RiHZyh0SoDnTOdLNjmQKp4WR0JKmVhtPHUozVB0HAg==","signature_status":"signed_v1","signed_at":"2026-05-18T00:32:39.549285Z","signed_message":"canonical_sha256_bytes"},"source_id":"1708.01261","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:d5ac82576b8ee00f0970caa9803dbb177e435aedc3c62096665190928a968067","sha256:099956ea549b0e60ceac0b3ba65fc27670dfaf4d45f191af75eaed246f8b5145"],"state_sha256":"114688f81726e566cb2f7e8f2d5710cb613aaf4573c13e91558abcface1765ee"}