{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2009:TCJYK7I6YCVL3735DE5UTS2TIT","short_pith_number":"pith:TCJYK7I6","canonical_record":{"source":{"id":"0910.4464","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2009-10-23T09:14:32Z","cross_cats_sorted":[],"title_canon_sha256":"e398f59243c09eb7cce6a2f712d7db4968f830e077286793cc84bcebdd8bec95","abstract_canon_sha256":"bb37becd0822157ee1c89d8404d4e4ea3a66070d77c34b69e1118d54073badfd"},"schema_version":"1.0"},"canonical_sha256":"9893857d1ec0aabdff7d193b49cb5344ee3046ae5f7c28e02811f3728ef9096b","source":{"kind":"arxiv","id":"0910.4464","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0910.4464","created_at":"2026-07-04T15:57:12Z"},{"alias_kind":"arxiv_version","alias_value":"0910.4464v1","created_at":"2026-07-04T15:57:12Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0910.4464","created_at":"2026-07-04T15:57:12Z"},{"alias_kind":"pith_short_12","alias_value":"TCJYK7I6YCVL","created_at":"2026-07-04T15:57:12Z"},{"alias_kind":"pith_short_16","alias_value":"TCJYK7I6YCVL3735","created_at":"2026-07-04T15:57:12Z"},{"alias_kind":"pith_short_8","alias_value":"TCJYK7I6","created_at":"2026-07-04T15:57:12Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2009:TCJYK7I6YCVL3735DE5UTS2TIT","target":"record","payload":{"canonical_record":{"source":{"id":"0910.4464","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2009-10-23T09:14:32Z","cross_cats_sorted":[],"title_canon_sha256":"e398f59243c09eb7cce6a2f712d7db4968f830e077286793cc84bcebdd8bec95","abstract_canon_sha256":"bb37becd0822157ee1c89d8404d4e4ea3a66070d77c34b69e1118d54073badfd"},"schema_version":"1.0"},"canonical_sha256":"9893857d1ec0aabdff7d193b49cb5344ee3046ae5f7c28e02811f3728ef9096b","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-04T15:57:12.575183Z","signature_b64":"BV8NCUbmYjOusxyT6/EtA0A6JVsVrnlT8P49bbFlImjRRADKN/FjoUXq68TY8lx2755dscZGmJ16V5JWwKd/BA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"9893857d1ec0aabdff7d193b49cb5344ee3046ae5f7c28e02811f3728ef9096b","last_reissued_at":"2026-07-04T15:57:12.574839Z","signature_status":"signed_v1","first_computed_at":"2026-07-04T15:57:12.574839Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"0910.4464","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":"2026-07-04T15:57:12Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Ru0KPkESscpodEn5+5IeWPSHXfs+QJBEXG6gDkj3R96fRnNDW+z6/rg1VLh2tI3atDbEIZnRz+t6UKoudEFxBQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-05T15:59:14.942335Z"},"content_sha256":"51658ed67ae7813e949861b98719ce5ea8b30469e6c16e8abdb8fac42ff5315a","schema_version":"1.0","event_id":"sha256:51658ed67ae7813e949861b98719ce5ea8b30469e6c16e8abdb8fac42ff5315a"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2009:TCJYK7I6YCVL3735DE5UTS2TIT","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"The first cyclotron harmonic of 4U 1538-52","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.HE","authors_text":"A. Camero-Arranz, G. Bernab\\'eu, I. Kreykenbohm, J. J. Rodes-Roca, J. M. Torrej\\'on, . Mart\\'inez N\\'u\\~nez","submitted_at":"2009-10-23T09:14:32Z","abstract_excerpt":"Cyclotron resonant scattering features are an essential tool for studying the magnetic field of neutron stars. The fundamental line provides a measure of the field strength, while the harmonic lines provide information about the structure and configuration of the magnetic field. Until now only a handful of sources are known to display more than one cyclotron line and only two of them have shown a series of harmonics. The aim of this work is to see the first harmonic cyclotron line, confirming the fundamental line at around 22 keV, thus increasing the number of sources with detected harmonic cy"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0910.4464","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/0910.4464/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"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":"2026-07-04T15:57:12Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"uMZjgh/7fU40uvIJvPsyauz6guazrO7QeM0ZrK1CvKa6wu5rM9tj0xelg6KzJLADMYeUxKQ/vY4uixAY3ZnuCQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-05T15:59:14.942731Z"},"content_sha256":"712d452fd3c2ce112ad8e2f854068c8d4e812810032e926fff12c8bfae35c99b","schema_version":"1.0","event_id":"sha256:712d452fd3c2ce112ad8e2f854068c8d4e812810032e926fff12c8bfae35c99b"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/TCJYK7I6YCVL3735DE5UTS2TIT/bundle.json","state_url":"https://pith.science/pith/TCJYK7I6YCVL3735DE5UTS2TIT/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/TCJYK7I6YCVL3735DE5UTS2TIT/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":"2026-08-05T15:59:14Z","links":{"resolver":"https://pith.science/pith/TCJYK7I6YCVL3735DE5UTS2TIT","bundle":"https://pith.science/pith/TCJYK7I6YCVL3735DE5UTS2TIT/bundle.json","state":"https://pith.science/pith/TCJYK7I6YCVL3735DE5UTS2TIT/state.json","well_known_bundle":"https://pith.science/.well-known/pith/TCJYK7I6YCVL3735DE5UTS2TIT/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2009:TCJYK7I6YCVL3735DE5UTS2TIT","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":"bb37becd0822157ee1c89d8404d4e4ea3a66070d77c34b69e1118d54073badfd","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2009-10-23T09:14:32Z","title_canon_sha256":"e398f59243c09eb7cce6a2f712d7db4968f830e077286793cc84bcebdd8bec95"},"schema_version":"1.0","source":{"id":"0910.4464","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0910.4464","created_at":"2026-07-04T15:57:12Z"},{"alias_kind":"arxiv_version","alias_value":"0910.4464v1","created_at":"2026-07-04T15:57:12Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0910.4464","created_at":"2026-07-04T15:57:12Z"},{"alias_kind":"pith_short_12","alias_value":"TCJYK7I6YCVL","created_at":"2026-07-04T15:57:12Z"},{"alias_kind":"pith_short_16","alias_value":"TCJYK7I6YCVL3735","created_at":"2026-07-04T15:57:12Z"},{"alias_kind":"pith_short_8","alias_value":"TCJYK7I6","created_at":"2026-07-04T15:57:12Z"}],"graph_snapshots":[{"event_id":"sha256:712d452fd3c2ce112ad8e2f854068c8d4e812810032e926fff12c8bfae35c99b","target":"graph","created_at":"2026-07-04T15:57:12Z","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/0910.4464/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Cyclotron resonant scattering features are an essential tool for studying the magnetic field of neutron stars. The fundamental line provides a measure of the field strength, while the harmonic lines provide information about the structure and configuration of the magnetic field. Until now only a handful of sources are known to display more than one cyclotron line and only two of them have shown a series of harmonics. The aim of this work is to see the first harmonic cyclotron line, confirming the fundamental line at around 22 keV, thus increasing the number of sources with detected harmonic cy","authors_text":"A. Camero-Arranz, G. Bernab\\'eu, I. Kreykenbohm, J. J. Rodes-Roca, J. M. Torrej\\'on, . Mart\\'inez N\\'u\\~nez","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2009-10-23T09:14:32Z","title":"The first cyclotron harmonic of 4U 1538-52"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0910.4464","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":"sha256:51658ed67ae7813e949861b98719ce5ea8b30469e6c16e8abdb8fac42ff5315a","target":"record","created_at":"2026-07-04T15:57:12Z","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":"bb37becd0822157ee1c89d8404d4e4ea3a66070d77c34b69e1118d54073badfd","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2009-10-23T09:14:32Z","title_canon_sha256":"e398f59243c09eb7cce6a2f712d7db4968f830e077286793cc84bcebdd8bec95"},"schema_version":"1.0","source":{"id":"0910.4464","kind":"arxiv","version":1}},"canonical_sha256":"9893857d1ec0aabdff7d193b49cb5344ee3046ae5f7c28e02811f3728ef9096b","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"9893857d1ec0aabdff7d193b49cb5344ee3046ae5f7c28e02811f3728ef9096b","first_computed_at":"2026-07-04T15:57:12.574839Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-04T15:57:12.574839Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"BV8NCUbmYjOusxyT6/EtA0A6JVsVrnlT8P49bbFlImjRRADKN/FjoUXq68TY8lx2755dscZGmJ16V5JWwKd/BA==","signature_status":"signed_v1","signed_at":"2026-07-04T15:57:12.575183Z","signed_message":"canonical_sha256_bytes"},"source_id":"0910.4464","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:51658ed67ae7813e949861b98719ce5ea8b30469e6c16e8abdb8fac42ff5315a","sha256:712d452fd3c2ce112ad8e2f854068c8d4e812810032e926fff12c8bfae35c99b"],"state_sha256":"84c213abfe171c40e3243afd08a6f11d44dcf46d9984ee2cd430abaa93f9c183"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"4QiIVQx3RUd8SW7vD8oLte16QeAvO6Jm+7MEsyZDfQ8oVcXcaP/yStxpuw53KPin08ouIU+YSGBssd1C3uGNDg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-05T15:59:14.945406Z","bundle_sha256":"414814762bd95896415fd04b7911d2cd96c1987e7d7169ed1ec2fae2c0dc9488"}}