{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2015:QKOPNSC6NMUZFGCZUXABSAKV3R","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":"b2c8a59035d37a70e988f0f356eeb65fa378ff507ce7454c98707782358397ac","cross_cats_sorted":["astro-ph.HE"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2015-07-17T20:07:11Z","title_canon_sha256":"b1ed1148d8a1bc05d4002704e525d9407951ef5e493ddc943bdf5bf26d4cdd6a"},"schema_version":"1.0","source":{"id":"1507.05101","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1507.05101","created_at":"2026-07-05T01:57:45Z"},{"alias_kind":"arxiv_version","alias_value":"1507.05101v2","created_at":"2026-07-05T01:57:45Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1507.05101","created_at":"2026-07-05T01:57:45Z"},{"alias_kind":"pith_short_12","alias_value":"QKOPNSC6NMUZ","created_at":"2026-07-05T01:57:45Z"},{"alias_kind":"pith_short_16","alias_value":"QKOPNSC6NMUZFGCZ","created_at":"2026-07-05T01:57:45Z"},{"alias_kind":"pith_short_8","alias_value":"QKOPNSC6","created_at":"2026-07-05T01:57:45Z"}],"graph_snapshots":[{"event_id":"sha256:2a5ddb96c506c05d70ce4f0669899ed917186a4863ae84ab5d14471ecc88b46c","target":"graph","created_at":"2026-07-05T01:57:45Z","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/1507.05101/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We present an overview of four phase-constrained Chandra HETGS X-ray observations of Delta Ori A. Delta Ori A is actually a triple system which includes the nearest massive eclipsing spectroscopic binary, Delta Ori Aa, the only such object which can be observed with little phase-smearing with the Chandra gratings. Since the fainter star, Delta Ori Aa2, has a much lower X-ray luminosity than the brighter primary, Delta Ori A provides a unique system with which to test the spatial distribution of the X-ray emitting gas around Delta Ori Aa1 via occultation by the photosphere of and wind cavity ar","authors_text":"A. F. J. Moffat, A. M. T. Pollock, C. M. P. Russell, D. P. Huenemoerder, H. Pablo, J. Lauer, J. L. Hoffman, J. R. Lomax, J. S. Nichols, K. Gayley, K. Hamaguchi, K. T. Hole, L. Oskinova, M. F. Corcoran, M. Leutenegger, N. D. Richardson, N. R. Evans, R. C. Iping, R. Ignace, S. P. Owocki, T. R. Gull, T. Shenar, W. L. Waldron, W.-R. Hamann, Y. Naze","cross_cats":["astro-ph.HE"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2015-07-17T20:07:11Z","title":"A Coordinated X-ray and Optical Campaign on the Nearest Massive Eclipsing Binary, Delta Ori Aa: I. Overview of the X-ray Spectrum"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1507.05101","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":"sha256:9038d6e6c9298813c1d5ab02009a760a1bed129eb04babd2f5a4066383f7e10f","target":"record","created_at":"2026-07-05T01:57:45Z","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":"b2c8a59035d37a70e988f0f356eeb65fa378ff507ce7454c98707782358397ac","cross_cats_sorted":["astro-ph.HE"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2015-07-17T20:07:11Z","title_canon_sha256":"b1ed1148d8a1bc05d4002704e525d9407951ef5e493ddc943bdf5bf26d4cdd6a"},"schema_version":"1.0","source":{"id":"1507.05101","kind":"arxiv","version":2}},"canonical_sha256":"829cf6c85e6b29929859a5c0190155dc56e963858856b935a8027e861f9b850e","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"829cf6c85e6b29929859a5c0190155dc56e963858856b935a8027e861f9b850e","first_computed_at":"2026-07-05T01:57:45.039025Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T01:57:45.039025Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"ZbvDnZBAnlz23RLsroW5auUIunqaL6LlM2KG7/MmUd/sg8IVensZxlr3TZhetmVhkDdjFqiAFWmgWuDqxccVDQ==","signature_status":"signed_v1","signed_at":"2026-07-05T01:57:45.039425Z","signed_message":"canonical_sha256_bytes"},"source_id":"1507.05101","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:9038d6e6c9298813c1d5ab02009a760a1bed129eb04babd2f5a4066383f7e10f","sha256:2a5ddb96c506c05d70ce4f0669899ed917186a4863ae84ab5d14471ecc88b46c"],"state_sha256":"31753925ae8456f0c0f3dd47e21b6e62d40db33ae56b95b16ee5fd0997d78222"}