{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2010:6XYOA6UNK3QXL5YRPMSEM5KJWU","short_pith_number":"pith:6XYOA6UN","canonical_record":{"source":{"id":"1011.3295","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2010-11-15T05:32:02Z","cross_cats_sorted":[],"title_canon_sha256":"244f4b2cdd9b6456f9dad5439731f12c632fcf2bc57512d7ef1343419948b9aa","abstract_canon_sha256":"f3977b11f61b1ea795da565b43fb84788a1dbcfe9642c88db7796ac1858b19f7"},"schema_version":"1.0"},"canonical_sha256":"f5f0e07a8d56e175f7117b24467549b526605e88acc32439b5e19409f948cccc","source":{"kind":"arxiv","id":"1011.3295","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1011.3295","created_at":"2026-05-18T02:04:47Z"},{"alias_kind":"arxiv_version","alias_value":"1011.3295v1","created_at":"2026-05-18T02:04:47Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1011.3295","created_at":"2026-05-18T02:04:47Z"},{"alias_kind":"pith_short_12","alias_value":"6XYOA6UNK3QX","created_at":"2026-05-18T12:26:04Z"},{"alias_kind":"pith_short_16","alias_value":"6XYOA6UNK3QXL5YR","created_at":"2026-05-18T12:26:04Z"},{"alias_kind":"pith_short_8","alias_value":"6XYOA6UN","created_at":"2026-05-18T12:26:04Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2010:6XYOA6UNK3QXL5YRPMSEM5KJWU","target":"record","payload":{"canonical_record":{"source":{"id":"1011.3295","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2010-11-15T05:32:02Z","cross_cats_sorted":[],"title_canon_sha256":"244f4b2cdd9b6456f9dad5439731f12c632fcf2bc57512d7ef1343419948b9aa","abstract_canon_sha256":"f3977b11f61b1ea795da565b43fb84788a1dbcfe9642c88db7796ac1858b19f7"},"schema_version":"1.0"},"canonical_sha256":"f5f0e07a8d56e175f7117b24467549b526605e88acc32439b5e19409f948cccc","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:04:47.679677Z","signature_b64":"nirhJc/Wi3+tykOHcOIjvzs16WTq86+WtaTHSk6qKAcjNGMoV7WQ4D52IkYaHZhu2xCOD12iaFU4GZBsTY9MBw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"f5f0e07a8d56e175f7117b24467549b526605e88acc32439b5e19409f948cccc","last_reissued_at":"2026-05-18T02:04:47.678753Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:04:47.678753Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1011.3295","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":"2026-05-18T02:04:47Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"LuAu1/HnDZXh/3bf5wmbWSIh7IM95JUwkiXUOpwynd/LQevMQUMLspGB2FpolwWmAniJrSPJZ+PcbeHI0NQ0Bw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-26T18:19:44.833520Z"},"content_sha256":"58076a7f50d6f2edbf6c7182770bd4be470fa90dbcc7c38b2710e7c2b18ea2a1","schema_version":"1.0","event_id":"sha256:58076a7f50d6f2edbf6c7182770bd4be470fa90dbcc7c38b2710e7c2b18ea2a1"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2010:6XYOA6UNK3QXL5YRPMSEM5KJWU","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Identification of a Population of X-ray Emitting Massive Stars in the Galactic Plane","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.HE","authors_text":"(10) U. Warwick, (11) U. Toronto), (2) U. California, (3) CfA, (4) Caltech, (5) U. Wisconsin, (6) NRAO, (7) MIT, (8) U. Hertfordshire, (9) NRL, B. M. Gaensler (1), B. Posselt (3), C. L. Brogan (6), D. Chakrabarty (7), D. L. Kaplan (2), D. T. H. Steeghs (1), G. E. Anderson (1), J. C. Lee (3), J. C. Mauerhan (4), J. E. Drew (8), J. E. Grindlay (3), J. Hong (3), J. J. Drake (3), M. H. van Kerkwijk (11) ((1) U. Sydney, P. O. Slane (3), R. A. Benjamin (5), S. S. Murray (3), T. J. W. Lazio (9)","submitted_at":"2010-11-15T05:32:02Z","abstract_excerpt":"We present X-ray, infrared, optical and radio observations of four previously unidentified Galactic plane X-ray sources, AX J163252-4746, AX J184738-0156, AX J144701-5919 and AX J144547-5931. Detection of each source with the Chandra X-ray Observatory has provided sub-arcsecond localizations, which we use to identify bright infrared counterparts to all four objects. Infrared and optical spectroscopy of these counterparts demonstrate that all four X-ray sources are extremely massive stars, with spectral classifications Ofpe/WN9 (AX J163252-4746), WN7 (AX J184738-0156 = WR121a), WN7-8h (AX J1447"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1011.3295","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":"2026-05-18T02:04:47Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"FQHIVqvutkSqP773aQt/xKRbX2sJxAxwvRyqHnZdcQ9r3te7IjmpPEesHCX+ZmaION9AlzNMn5GiGw1IP8QRBg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-26T18:19:44.834190Z"},"content_sha256":"7dc616a02b51df7f83ca72899f221d1b744373edfd2e6f218374797c41adfb49","schema_version":"1.0","event_id":"sha256:7dc616a02b51df7f83ca72899f221d1b744373edfd2e6f218374797c41adfb49"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/6XYOA6UNK3QXL5YRPMSEM5KJWU/bundle.json","state_url":"https://pith.science/pith/6XYOA6UNK3QXL5YRPMSEM5KJWU/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/6XYOA6UNK3QXL5YRPMSEM5KJWU/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":"2026-05-26T18:19:44Z","links":{"resolver":"https://pith.science/pith/6XYOA6UNK3QXL5YRPMSEM5KJWU","bundle":"https://pith.science/pith/6XYOA6UNK3QXL5YRPMSEM5KJWU/bundle.json","state":"https://pith.science/pith/6XYOA6UNK3QXL5YRPMSEM5KJWU/state.json","well_known_bundle":"https://pith.science/.well-known/pith/6XYOA6UNK3QXL5YRPMSEM5KJWU/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2010:6XYOA6UNK3QXL5YRPMSEM5KJWU","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":"f3977b11f61b1ea795da565b43fb84788a1dbcfe9642c88db7796ac1858b19f7","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2010-11-15T05:32:02Z","title_canon_sha256":"244f4b2cdd9b6456f9dad5439731f12c632fcf2bc57512d7ef1343419948b9aa"},"schema_version":"1.0","source":{"id":"1011.3295","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1011.3295","created_at":"2026-05-18T02:04:47Z"},{"alias_kind":"arxiv_version","alias_value":"1011.3295v1","created_at":"2026-05-18T02:04:47Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1011.3295","created_at":"2026-05-18T02:04:47Z"},{"alias_kind":"pith_short_12","alias_value":"6XYOA6UNK3QX","created_at":"2026-05-18T12:26:04Z"},{"alias_kind":"pith_short_16","alias_value":"6XYOA6UNK3QXL5YR","created_at":"2026-05-18T12:26:04Z"},{"alias_kind":"pith_short_8","alias_value":"6XYOA6UN","created_at":"2026-05-18T12:26:04Z"}],"graph_snapshots":[{"event_id":"sha256:7dc616a02b51df7f83ca72899f221d1b744373edfd2e6f218374797c41adfb49","target":"graph","created_at":"2026-05-18T02:04:47Z","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":"We present X-ray, infrared, optical and radio observations of four previously unidentified Galactic plane X-ray sources, AX J163252-4746, AX J184738-0156, AX J144701-5919 and AX J144547-5931. Detection of each source with the Chandra X-ray Observatory has provided sub-arcsecond localizations, which we use to identify bright infrared counterparts to all four objects. Infrared and optical spectroscopy of these counterparts demonstrate that all four X-ray sources are extremely massive stars, with spectral classifications Ofpe/WN9 (AX J163252-4746), WN7 (AX J184738-0156 = WR121a), WN7-8h (AX J1447","authors_text":"(10) U. Warwick, (11) U. Toronto), (2) U. California, (3) CfA, (4) Caltech, (5) U. Wisconsin, (6) NRAO, (7) MIT, (8) U. Hertfordshire, (9) NRL, B. M. Gaensler (1), B. Posselt (3), C. L. Brogan (6), D. Chakrabarty (7), D. L. Kaplan (2), D. T. H. Steeghs (1), G. E. Anderson (1), J. C. Lee (3), J. C. Mauerhan (4), J. E. Drew (8), J. E. Grindlay (3), J. Hong (3), J. J. Drake (3), M. H. van Kerkwijk (11) ((1) U. Sydney, P. O. Slane (3), R. A. Benjamin (5), S. S. Murray (3), T. J. W. Lazio (9)","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2010-11-15T05:32:02Z","title":"Identification of a Population of X-ray Emitting Massive Stars in the Galactic Plane"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1011.3295","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":"sha256:58076a7f50d6f2edbf6c7182770bd4be470fa90dbcc7c38b2710e7c2b18ea2a1","target":"record","created_at":"2026-05-18T02:04:47Z","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":"f3977b11f61b1ea795da565b43fb84788a1dbcfe9642c88db7796ac1858b19f7","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2010-11-15T05:32:02Z","title_canon_sha256":"244f4b2cdd9b6456f9dad5439731f12c632fcf2bc57512d7ef1343419948b9aa"},"schema_version":"1.0","source":{"id":"1011.3295","kind":"arxiv","version":1}},"canonical_sha256":"f5f0e07a8d56e175f7117b24467549b526605e88acc32439b5e19409f948cccc","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"f5f0e07a8d56e175f7117b24467549b526605e88acc32439b5e19409f948cccc","first_computed_at":"2026-05-18T02:04:47.678753Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:04:47.678753Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"nirhJc/Wi3+tykOHcOIjvzs16WTq86+WtaTHSk6qKAcjNGMoV7WQ4D52IkYaHZhu2xCOD12iaFU4GZBsTY9MBw==","signature_status":"signed_v1","signed_at":"2026-05-18T02:04:47.679677Z","signed_message":"canonical_sha256_bytes"},"source_id":"1011.3295","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:58076a7f50d6f2edbf6c7182770bd4be470fa90dbcc7c38b2710e7c2b18ea2a1","sha256:7dc616a02b51df7f83ca72899f221d1b744373edfd2e6f218374797c41adfb49"],"state_sha256":"71e79e8fcb8f2d8be0d337b1cd1ddce7e12c526d3785672220d6f3aa622ea41e"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"IrVPwkQ41/6VQFSCAYc9S/hRvMTu7ExUdxLXQcY3akEdH7FLbd/M42dMXlNY6FhrdmQoiRvtIZEzZs1yyM4qAw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-26T18:19:44.837680Z","bundle_sha256":"0d91474bcf10b2c501b5dd84dd58f5877f97732fa8dc2ec37e4854c7c769248c"}}