{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2012:PILQM6I5MS54LJM5JMTMBISRIB","short_pith_number":"pith:PILQM6I5","canonical_record":{"source":{"id":"1205.3538","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2012-05-16T01:57:20Z","cross_cats_sorted":[],"title_canon_sha256":"230ec2e0b9c3730ff13ec89990811539ef272cd4250679d6a9705dec0ec1d43f","abstract_canon_sha256":"22264f7b282fedcf58e892bfae231fe7e4dc4c53c28942343d25694b746725f2"},"schema_version":"1.0"},"canonical_sha256":"7a1706791d64bbc5a59d4b26c0a251407e88fa51fc7b4596526d0cd090ebe7ad","source":{"kind":"arxiv","id":"1205.3538","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1205.3538","created_at":"2026-05-18T03:55:34Z"},{"alias_kind":"arxiv_version","alias_value":"1205.3538v1","created_at":"2026-05-18T03:55:34Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1205.3538","created_at":"2026-05-18T03:55:34Z"},{"alias_kind":"pith_short_12","alias_value":"PILQM6I5MS54","created_at":"2026-05-18T12:27:18Z"},{"alias_kind":"pith_short_16","alias_value":"PILQM6I5MS54LJM5","created_at":"2026-05-18T12:27:18Z"},{"alias_kind":"pith_short_8","alias_value":"PILQM6I5","created_at":"2026-05-18T12:27:18Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2012:PILQM6I5MS54LJM5JMTMBISRIB","target":"record","payload":{"canonical_record":{"source":{"id":"1205.3538","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2012-05-16T01:57:20Z","cross_cats_sorted":[],"title_canon_sha256":"230ec2e0b9c3730ff13ec89990811539ef272cd4250679d6a9705dec0ec1d43f","abstract_canon_sha256":"22264f7b282fedcf58e892bfae231fe7e4dc4c53c28942343d25694b746725f2"},"schema_version":"1.0"},"canonical_sha256":"7a1706791d64bbc5a59d4b26c0a251407e88fa51fc7b4596526d0cd090ebe7ad","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T03:55:34.857237Z","signature_b64":"6c2zdVAxKc4O5/dPTQfasTAiJLLhTohNk4AMMZGRjxZe3v2UzadChJKYPeg1rScy/03mHFQgz/lwI4XqXigwBQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"7a1706791d64bbc5a59d4b26c0a251407e88fa51fc7b4596526d0cd090ebe7ad","last_reissued_at":"2026-05-18T03:55:34.856437Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T03:55:34.856437Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1205.3538","source_version":1,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T03:55:34Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"EPTiy+nFDT4P3tpNZAD26A/9Vv1+lwgatUwarQMWDT3K+CL4nx/3qQ0iG9SO2izSdznmeft7KN9r/1Tvjv/YCw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-25T10:04:16.955399Z"},"content_sha256":"40c94379e673bd61f3a3cc0799bc108acdc7107004155dfbe6c7d5a0663f077c","schema_version":"1.0","event_id":"sha256:40c94379e673bd61f3a3cc0799bc108acdc7107004155dfbe6c7d5a0663f077c"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2012:PILQM6I5MS54LJM5JMTMBISRIB","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Solving the Puzzle of the Massive Star System Theta 2 Orionis A","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.SR","authors_text":"C. A. Cartagena, D. H. Cohen, G. Fehon, M. A. Leutenegger, M. Gagne, M. R. Savoy, R. H. D. Townsend, V. Petit","submitted_at":"2012-05-16T01:57:20Z","abstract_excerpt":"The young O9.5 V spectroscopic binary Theta 2 Ori A shows moderately hard X-ray emission and relatively narrow X-ray lines, suggesting that it may be a Magnetically Confined Wind Shock (MCWS) source, similar to its more massive analogue Theta 1 Ori C. X-ray flares occurring near periastron led to the suggestion that the flares are produced via magnetic reconnection as magnetospheres on both components of the Theta 2 Ori A binary interact at closest approach.\n  We use a series of high-resolution spectropolarimetric observations of Theta 2 Ori A to place an upper limit on the magnetic field stre"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1205.3538","kind":"arxiv","version":1},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"references":{"count":0,"sample":[],"resolved_work":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","internal_anchors":0},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"},"verdict_id":null},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T03:55:34Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"e6vcRqKIqNL7x7X6gdXWcGpaD0Eh4M/WscvkZAUnEeYmQZYZysFk+ACw+ff9iWplkHmq9bbiiHiQGRXkZIHKAg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-25T10:04:16.955758Z"},"content_sha256":"ee0d152116e8a1dd838f63246fc466f03b4ba2c9140a089f9cc9bfdf8e1869cf","schema_version":"1.0","event_id":"sha256:ee0d152116e8a1dd838f63246fc466f03b4ba2c9140a089f9cc9bfdf8e1869cf"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/PILQM6I5MS54LJM5JMTMBISRIB/bundle.json","state_url":"https://pith.science/pith/PILQM6I5MS54LJM5JMTMBISRIB/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/PILQM6I5MS54LJM5JMTMBISRIB/bundle.json","status":"primary"}],"public_keys":[{"key_id":"pith-v1-2026-05","algorithm":"ed25519","format":"raw","public_key_b64":"stVStoiQhXFxp4s2pdzPNoqVNBMojDU/fJ2db5S3CbM=","public_key_hex":"b2d552b68890857171a78b36a5dccf368a953413288c353f7c9d9d6f94b709b3","fingerprint_sha256_b32_first128bits":"RVFV5Z2OI2J3ZUO7ERDEBCYNKS","fingerprint_sha256_hex":"8d4b5ee74e4693bcd1df2446408b0d54","rotates_at":null,"url":"https://pith.science/pith-signing-key.json","notes":"Pith uses this Ed25519 key to sign canonical record SHA-256 digests. Verify with: ed25519_verify(public_key, message=canonical_sha256_bytes, signature=base64decode(signature_b64))."}],"merge_version":"pith-open-graph-merge-v1","built_at":"2026-05-25T10:04:16Z","links":{"resolver":"https://pith.science/pith/PILQM6I5MS54LJM5JMTMBISRIB","bundle":"https://pith.science/pith/PILQM6I5MS54LJM5JMTMBISRIB/bundle.json","state":"https://pith.science/pith/PILQM6I5MS54LJM5JMTMBISRIB/state.json","well_known_bundle":"https://pith.science/.well-known/pith/PILQM6I5MS54LJM5JMTMBISRIB/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2012:PILQM6I5MS54LJM5JMTMBISRIB","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":"22264f7b282fedcf58e892bfae231fe7e4dc4c53c28942343d25694b746725f2","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2012-05-16T01:57:20Z","title_canon_sha256":"230ec2e0b9c3730ff13ec89990811539ef272cd4250679d6a9705dec0ec1d43f"},"schema_version":"1.0","source":{"id":"1205.3538","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1205.3538","created_at":"2026-05-18T03:55:34Z"},{"alias_kind":"arxiv_version","alias_value":"1205.3538v1","created_at":"2026-05-18T03:55:34Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1205.3538","created_at":"2026-05-18T03:55:34Z"},{"alias_kind":"pith_short_12","alias_value":"PILQM6I5MS54","created_at":"2026-05-18T12:27:18Z"},{"alias_kind":"pith_short_16","alias_value":"PILQM6I5MS54LJM5","created_at":"2026-05-18T12:27:18Z"},{"alias_kind":"pith_short_8","alias_value":"PILQM6I5","created_at":"2026-05-18T12:27:18Z"}],"graph_snapshots":[{"event_id":"sha256:ee0d152116e8a1dd838f63246fc466f03b4ba2c9140a089f9cc9bfdf8e1869cf","target":"graph","created_at":"2026-05-18T03:55:34Z","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 young O9.5 V spectroscopic binary Theta 2 Ori A shows moderately hard X-ray emission and relatively narrow X-ray lines, suggesting that it may be a Magnetically Confined Wind Shock (MCWS) source, similar to its more massive analogue Theta 1 Ori C. X-ray flares occurring near periastron led to the suggestion that the flares are produced via magnetic reconnection as magnetospheres on both components of the Theta 2 Ori A binary interact at closest approach.\n  We use a series of high-resolution spectropolarimetric observations of Theta 2 Ori A to place an upper limit on the magnetic field stre","authors_text":"C. A. Cartagena, D. H. Cohen, G. Fehon, M. A. Leutenegger, M. Gagne, M. R. Savoy, R. H. D. Townsend, V. Petit","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2012-05-16T01:57:20Z","title":"Solving the Puzzle of the Massive Star System Theta 2 Orionis A"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1205.3538","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":"sha256:40c94379e673bd61f3a3cc0799bc108acdc7107004155dfbe6c7d5a0663f077c","target":"record","created_at":"2026-05-18T03:55:34Z","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":"22264f7b282fedcf58e892bfae231fe7e4dc4c53c28942343d25694b746725f2","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2012-05-16T01:57:20Z","title_canon_sha256":"230ec2e0b9c3730ff13ec89990811539ef272cd4250679d6a9705dec0ec1d43f"},"schema_version":"1.0","source":{"id":"1205.3538","kind":"arxiv","version":1}},"canonical_sha256":"7a1706791d64bbc5a59d4b26c0a251407e88fa51fc7b4596526d0cd090ebe7ad","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"7a1706791d64bbc5a59d4b26c0a251407e88fa51fc7b4596526d0cd090ebe7ad","first_computed_at":"2026-05-18T03:55:34.856437Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T03:55:34.856437Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"6c2zdVAxKc4O5/dPTQfasTAiJLLhTohNk4AMMZGRjxZe3v2UzadChJKYPeg1rScy/03mHFQgz/lwI4XqXigwBQ==","signature_status":"signed_v1","signed_at":"2026-05-18T03:55:34.857237Z","signed_message":"canonical_sha256_bytes"},"source_id":"1205.3538","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:40c94379e673bd61f3a3cc0799bc108acdc7107004155dfbe6c7d5a0663f077c","sha256:ee0d152116e8a1dd838f63246fc466f03b4ba2c9140a089f9cc9bfdf8e1869cf"],"state_sha256":"4b4cedc1adef273662a7dc9ce5ba381bb9ce30ca2a3e6e7ea87f5c08ca1b1ba3"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"66z210/xgCVUlUSoxtv21w/KiOd8pxgg3cTjzHLRoD2jFG5WdoGi4w20G6q53vHhjpMZ/l+k6XFfYRXB6BjpAA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-25T10:04:16.959134Z","bundle_sha256":"eaaaa1495bb77999f5ca5b1d4f8d103b592581d05c64a9434f8a7272dcef1d23"}}