{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2017:NW2YMRRNOQUJVFOQVZM7JEEGZM","short_pith_number":"pith:NW2YMRRN","canonical_record":{"source":{"id":"1705.08902","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2017-05-24T18:00:04Z","cross_cats_sorted":[],"title_canon_sha256":"1af94acd501abc1d3e7fb1c241d35b434e34b37c759da0e7bea7051cccbfb9c4","abstract_canon_sha256":"a2546c18cc1055d9cc117a2eb3242eae815b8d43fc24ac4c5c219903b8270d2d"},"schema_version":"1.0"},"canonical_sha256":"6db586462d74289a95d0ae59f49086cb35cad78608339a49c729b1cb5c533328","source":{"kind":"arxiv","id":"1705.08902","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1705.08902","created_at":"2026-05-18T00:43:24Z"},{"alias_kind":"arxiv_version","alias_value":"1705.08902v1","created_at":"2026-05-18T00:43:24Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1705.08902","created_at":"2026-05-18T00:43:24Z"},{"alias_kind":"pith_short_12","alias_value":"NW2YMRRNOQUJ","created_at":"2026-05-18T12:31:34Z"},{"alias_kind":"pith_short_16","alias_value":"NW2YMRRNOQUJVFOQ","created_at":"2026-05-18T12:31:34Z"},{"alias_kind":"pith_short_8","alias_value":"NW2YMRRN","created_at":"2026-05-18T12:31:34Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2017:NW2YMRRNOQUJVFOQVZM7JEEGZM","target":"record","payload":{"canonical_record":{"source":{"id":"1705.08902","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2017-05-24T18:00:04Z","cross_cats_sorted":[],"title_canon_sha256":"1af94acd501abc1d3e7fb1c241d35b434e34b37c759da0e7bea7051cccbfb9c4","abstract_canon_sha256":"a2546c18cc1055d9cc117a2eb3242eae815b8d43fc24ac4c5c219903b8270d2d"},"schema_version":"1.0"},"canonical_sha256":"6db586462d74289a95d0ae59f49086cb35cad78608339a49c729b1cb5c533328","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:43:24.862060Z","signature_b64":"u50IkUO4Qwub0oyEpUdZ4pjl66XT0LkyCsEOf0xGaAI+xafCpARgN+JOfuJevJAm0RMHSBKzxrVkg9xP5rQmDg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"6db586462d74289a95d0ae59f49086cb35cad78608339a49c729b1cb5c533328","last_reissued_at":"2026-05-18T00:43:24.861622Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:43:24.861622Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1705.08902","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":"2026-05-18T00:43:24Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"NT2eNqw9KmnKhL9JqmjeNxPro5lonhapVu38XBm7JMXF7CmoqIEfRMB795ctrzfxqzgjK5ix18DGlfn7nkQOCA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-01T06:03:13.787578Z"},"content_sha256":"a35b1fb5734da34c6c9735d8354e40bea49759e5cb1eb6d0108888d3e4f3b048","schema_version":"1.0","event_id":"sha256:a35b1fb5734da34c6c9735d8354e40bea49759e5cb1eb6d0108888d3e4f3b048"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2017:NW2YMRRNOQUJVFOQVZM7JEEGZM","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"An XMM-Newton and NuSTAR study of IGR J18214-1318: a non-pulsating high-mass X-ray binary with a neutron star","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.HE","authors_text":"Felix F\\\"urst, Francesca M. Fornasini, John A. Tomsick, J\\\"orn Wilms, Katja Pottschmidt, Lorenzo Natalucci, Matteo Bachetti, Roman A. Krivonos","submitted_at":"2017-05-24T18:00:04Z","abstract_excerpt":"IGR J18214-1318, a Galactic source discovered by the International Gamma-Ray Astrophysics Laboratory, is a high-mass X-ray binary (HMXB) with a supergiant O-type stellar donor. We report on the XMM-Newton and NuSTAR observations that were undertaken to determine the nature of the compact object in this system. This source exhibits high levels of aperiodic variability, but no periodic pulsations are detected with a 90% confidence upper limit of 2% fractional rms between 0.00003-88 Hz, a frequency range that includes the typical pulse periods of neutron stars (NSs) in HMXBs (0.1-10$^3$ s). Altho"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1705.08902","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":"2026-05-18T00:43:24Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"+q/NzarX7/78ujr449tcpSnWcNLXg1shM0ud5rItd1M6PtItdN9vQea4lXFFYekm+7lisIDA/anqqicQptu2Ag==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-01T06:03:13.787937Z"},"content_sha256":"7819115893db783dc2101ee27878482684a68f914f0bcd2c83919776efa766ce","schema_version":"1.0","event_id":"sha256:7819115893db783dc2101ee27878482684a68f914f0bcd2c83919776efa766ce"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/NW2YMRRNOQUJVFOQVZM7JEEGZM/bundle.json","state_url":"https://pith.science/pith/NW2YMRRNOQUJVFOQVZM7JEEGZM/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/NW2YMRRNOQUJVFOQVZM7JEEGZM/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":"2026-06-01T06:03:13Z","links":{"resolver":"https://pith.science/pith/NW2YMRRNOQUJVFOQVZM7JEEGZM","bundle":"https://pith.science/pith/NW2YMRRNOQUJVFOQVZM7JEEGZM/bundle.json","state":"https://pith.science/pith/NW2YMRRNOQUJVFOQVZM7JEEGZM/state.json","well_known_bundle":"https://pith.science/.well-known/pith/NW2YMRRNOQUJVFOQVZM7JEEGZM/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2017:NW2YMRRNOQUJVFOQVZM7JEEGZM","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":"a2546c18cc1055d9cc117a2eb3242eae815b8d43fc24ac4c5c219903b8270d2d","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2017-05-24T18:00:04Z","title_canon_sha256":"1af94acd501abc1d3e7fb1c241d35b434e34b37c759da0e7bea7051cccbfb9c4"},"schema_version":"1.0","source":{"id":"1705.08902","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1705.08902","created_at":"2026-05-18T00:43:24Z"},{"alias_kind":"arxiv_version","alias_value":"1705.08902v1","created_at":"2026-05-18T00:43:24Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1705.08902","created_at":"2026-05-18T00:43:24Z"},{"alias_kind":"pith_short_12","alias_value":"NW2YMRRNOQUJ","created_at":"2026-05-18T12:31:34Z"},{"alias_kind":"pith_short_16","alias_value":"NW2YMRRNOQUJVFOQ","created_at":"2026-05-18T12:31:34Z"},{"alias_kind":"pith_short_8","alias_value":"NW2YMRRN","created_at":"2026-05-18T12:31:34Z"}],"graph_snapshots":[{"event_id":"sha256:7819115893db783dc2101ee27878482684a68f914f0bcd2c83919776efa766ce","target":"graph","created_at":"2026-05-18T00:43:24Z","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":"IGR J18214-1318, a Galactic source discovered by the International Gamma-Ray Astrophysics Laboratory, is a high-mass X-ray binary (HMXB) with a supergiant O-type stellar donor. We report on the XMM-Newton and NuSTAR observations that were undertaken to determine the nature of the compact object in this system. This source exhibits high levels of aperiodic variability, but no periodic pulsations are detected with a 90% confidence upper limit of 2% fractional rms between 0.00003-88 Hz, a frequency range that includes the typical pulse periods of neutron stars (NSs) in HMXBs (0.1-10$^3$ s). Altho","authors_text":"Felix F\\\"urst, Francesca M. Fornasini, John A. Tomsick, J\\\"orn Wilms, Katja Pottschmidt, Lorenzo Natalucci, Matteo Bachetti, Roman A. Krivonos","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2017-05-24T18:00:04Z","title":"An XMM-Newton and NuSTAR study of IGR J18214-1318: a non-pulsating high-mass X-ray binary with a neutron star"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1705.08902","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:a35b1fb5734da34c6c9735d8354e40bea49759e5cb1eb6d0108888d3e4f3b048","target":"record","created_at":"2026-05-18T00:43:24Z","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":"a2546c18cc1055d9cc117a2eb3242eae815b8d43fc24ac4c5c219903b8270d2d","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2017-05-24T18:00:04Z","title_canon_sha256":"1af94acd501abc1d3e7fb1c241d35b434e34b37c759da0e7bea7051cccbfb9c4"},"schema_version":"1.0","source":{"id":"1705.08902","kind":"arxiv","version":1}},"canonical_sha256":"6db586462d74289a95d0ae59f49086cb35cad78608339a49c729b1cb5c533328","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"6db586462d74289a95d0ae59f49086cb35cad78608339a49c729b1cb5c533328","first_computed_at":"2026-05-18T00:43:24.861622Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:43:24.861622Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"u50IkUO4Qwub0oyEpUdZ4pjl66XT0LkyCsEOf0xGaAI+xafCpARgN+JOfuJevJAm0RMHSBKzxrVkg9xP5rQmDg==","signature_status":"signed_v1","signed_at":"2026-05-18T00:43:24.862060Z","signed_message":"canonical_sha256_bytes"},"source_id":"1705.08902","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:a35b1fb5734da34c6c9735d8354e40bea49759e5cb1eb6d0108888d3e4f3b048","sha256:7819115893db783dc2101ee27878482684a68f914f0bcd2c83919776efa766ce"],"state_sha256":"e7d3f9b5ca81f66582a0efa1f0791bc0d682f136b298a2c799add4c44d6f39a0"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"agH1Y8HbGl11xZoq0sBdNa7/f+S1D/YNWH/5GCTzTomoOeESetV8bjVbQ+rMvl33nZdodPTu86BN1kB13HrGCg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-01T06:03:13.790348Z","bundle_sha256":"6db9aae37adbd7cb3a6fa051468de981d51b2d4a6da9cbcf816b9fc3471578ec"}}