{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2013:FE4SZMIDA64PIRRUZ7TFYGGAVB","short_pith_number":"pith:FE4SZMID","canonical_record":{"source":{"id":"1304.2633","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2013-04-09T15:19:00Z","cross_cats_sorted":["astro-ph.GA"],"title_canon_sha256":"f28cf7fdfa631fb57aa1e32bea887caee4cced80d3bd4e96a7425b2c46c0e804","abstract_canon_sha256":"aa690012deb31b3854c7d77bda0ece2d891d23b03b5de34bd23af362b9212d98"},"schema_version":"1.0"},"canonical_sha256":"29392cb10307b8f44634cfe65c18c0a84e723266badaac8b63343f7efc978b55","source":{"kind":"arxiv","id":"1304.2633","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1304.2633","created_at":"2026-05-18T03:06:32Z"},{"alias_kind":"arxiv_version","alias_value":"1304.2633v2","created_at":"2026-05-18T03:06:32Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1304.2633","created_at":"2026-05-18T03:06:32Z"},{"alias_kind":"pith_short_12","alias_value":"FE4SZMIDA64P","created_at":"2026-05-18T12:27:45Z"},{"alias_kind":"pith_short_16","alias_value":"FE4SZMIDA64PIRRU","created_at":"2026-05-18T12:27:45Z"},{"alias_kind":"pith_short_8","alias_value":"FE4SZMID","created_at":"2026-05-18T12:27:45Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2013:FE4SZMIDA64PIRRUZ7TFYGGAVB","target":"record","payload":{"canonical_record":{"source":{"id":"1304.2633","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2013-04-09T15:19:00Z","cross_cats_sorted":["astro-ph.GA"],"title_canon_sha256":"f28cf7fdfa631fb57aa1e32bea887caee4cced80d3bd4e96a7425b2c46c0e804","abstract_canon_sha256":"aa690012deb31b3854c7d77bda0ece2d891d23b03b5de34bd23af362b9212d98"},"schema_version":"1.0"},"canonical_sha256":"29392cb10307b8f44634cfe65c18c0a84e723266badaac8b63343f7efc978b55","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T03:06:32.651192Z","signature_b64":"28vwUwCibnDwf+GYw8SagcFVXBlRlsMEvqH67AQgcmxXFGurVjJ5RepNLSd4nKqtF5bbjD9eW97rU1QAtd0UBg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"29392cb10307b8f44634cfe65c18c0a84e723266badaac8b63343f7efc978b55","last_reissued_at":"2026-05-18T03:06:32.650615Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T03:06:32.650615Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1304.2633","source_version":2,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T03:06:32Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"6H1UkUdS+f62xnlPfpKaL69S7Ssh4K8j8vNe6vhcrroZZ15y3v+xEgX9QYlSs401EojftNepjTH+UWhK71FbBg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-30T05:06:05.613542Z"},"content_sha256":"e775be2aaaafbcbab24639ddc64c1b1d858c1aa8b7dd7ab271f5927144af548c","schema_version":"1.0","event_id":"sha256:e775be2aaaafbcbab24639ddc64c1b1d858c1aa8b7dd7ab271f5927144af548c"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2013:FE4SZMIDA64PIRRUZ7TFYGGAVB","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"A reflection model for the cyclotron lines in the spectra of X-ray pulsars","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.GA"],"primary_cat":"astro-ph.HE","authors_text":"Alexander A. Lutovinov, Alexander A. Mushtukov, Dmitrij I. Nagirner, Juri Poutanen, Sergey S. Tsygankov, Valery F. Suleimanov, Victor Doroshenko","submitted_at":"2013-04-09T15:19:00Z","abstract_excerpt":"Cyclotron resonance scattering features observed in the spectra of some X-ray pulsars show significant changes of the line energy with the pulsar luminosity. At high luminosities, these variations are often associated with the onset and growth of the accretion column, which is believed to be the origin of the observed emission and of the cyclotron lines. However, this scenario inevitably implies large gradient of the magnetic field strength within the line-forming region, which makes the formation of the observed line-like features problematic. Moreover, the observed variation of the cyclotron"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1304.2633","kind":"arxiv","version":2},"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":"2026-05-18T03:06:32Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"hCYBwznQsEYGRA50k7gLb9S+LH1M6GYI/3SnVO5azw/2U1Z0PAJdDS6CT4P/Cx/acTG8z04BTusLA/Px04X0Bw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-30T05:06:05.613913Z"},"content_sha256":"a8757d1f0403420d2b7e541f3d519ae5e36c89793c1d18c344891a4a030145da","schema_version":"1.0","event_id":"sha256:a8757d1f0403420d2b7e541f3d519ae5e36c89793c1d18c344891a4a030145da"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/FE4SZMIDA64PIRRUZ7TFYGGAVB/bundle.json","state_url":"https://pith.science/pith/FE4SZMIDA64PIRRUZ7TFYGGAVB/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/FE4SZMIDA64PIRRUZ7TFYGGAVB/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":"2026-06-30T05:06:05Z","links":{"resolver":"https://pith.science/pith/FE4SZMIDA64PIRRUZ7TFYGGAVB","bundle":"https://pith.science/pith/FE4SZMIDA64PIRRUZ7TFYGGAVB/bundle.json","state":"https://pith.science/pith/FE4SZMIDA64PIRRUZ7TFYGGAVB/state.json","well_known_bundle":"https://pith.science/.well-known/pith/FE4SZMIDA64PIRRUZ7TFYGGAVB/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2013:FE4SZMIDA64PIRRUZ7TFYGGAVB","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":"aa690012deb31b3854c7d77bda0ece2d891d23b03b5de34bd23af362b9212d98","cross_cats_sorted":["astro-ph.GA"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2013-04-09T15:19:00Z","title_canon_sha256":"f28cf7fdfa631fb57aa1e32bea887caee4cced80d3bd4e96a7425b2c46c0e804"},"schema_version":"1.0","source":{"id":"1304.2633","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1304.2633","created_at":"2026-05-18T03:06:32Z"},{"alias_kind":"arxiv_version","alias_value":"1304.2633v2","created_at":"2026-05-18T03:06:32Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1304.2633","created_at":"2026-05-18T03:06:32Z"},{"alias_kind":"pith_short_12","alias_value":"FE4SZMIDA64P","created_at":"2026-05-18T12:27:45Z"},{"alias_kind":"pith_short_16","alias_value":"FE4SZMIDA64PIRRU","created_at":"2026-05-18T12:27:45Z"},{"alias_kind":"pith_short_8","alias_value":"FE4SZMID","created_at":"2026-05-18T12:27:45Z"}],"graph_snapshots":[{"event_id":"sha256:a8757d1f0403420d2b7e541f3d519ae5e36c89793c1d18c344891a4a030145da","target":"graph","created_at":"2026-05-18T03:06:32Z","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":"Cyclotron resonance scattering features observed in the spectra of some X-ray pulsars show significant changes of the line energy with the pulsar luminosity. At high luminosities, these variations are often associated with the onset and growth of the accretion column, which is believed to be the origin of the observed emission and of the cyclotron lines. However, this scenario inevitably implies large gradient of the magnetic field strength within the line-forming region, which makes the formation of the observed line-like features problematic. Moreover, the observed variation of the cyclotron","authors_text":"Alexander A. Lutovinov, Alexander A. Mushtukov, Dmitrij I. Nagirner, Juri Poutanen, Sergey S. Tsygankov, Valery F. Suleimanov, Victor Doroshenko","cross_cats":["astro-ph.GA"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2013-04-09T15:19:00Z","title":"A reflection model for the cyclotron lines in the spectra of X-ray pulsars"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1304.2633","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:e775be2aaaafbcbab24639ddc64c1b1d858c1aa8b7dd7ab271f5927144af548c","target":"record","created_at":"2026-05-18T03:06:32Z","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":"aa690012deb31b3854c7d77bda0ece2d891d23b03b5de34bd23af362b9212d98","cross_cats_sorted":["astro-ph.GA"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2013-04-09T15:19:00Z","title_canon_sha256":"f28cf7fdfa631fb57aa1e32bea887caee4cced80d3bd4e96a7425b2c46c0e804"},"schema_version":"1.0","source":{"id":"1304.2633","kind":"arxiv","version":2}},"canonical_sha256":"29392cb10307b8f44634cfe65c18c0a84e723266badaac8b63343f7efc978b55","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"29392cb10307b8f44634cfe65c18c0a84e723266badaac8b63343f7efc978b55","first_computed_at":"2026-05-18T03:06:32.650615Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T03:06:32.650615Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"28vwUwCibnDwf+GYw8SagcFVXBlRlsMEvqH67AQgcmxXFGurVjJ5RepNLSd4nKqtF5bbjD9eW97rU1QAtd0UBg==","signature_status":"signed_v1","signed_at":"2026-05-18T03:06:32.651192Z","signed_message":"canonical_sha256_bytes"},"source_id":"1304.2633","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:e775be2aaaafbcbab24639ddc64c1b1d858c1aa8b7dd7ab271f5927144af548c","sha256:a8757d1f0403420d2b7e541f3d519ae5e36c89793c1d18c344891a4a030145da"],"state_sha256":"d92d1981807e4d7eef9cb75dbd0416e373c19ca816b5d82c2ea5feee2803574a"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"T2CrY3vNPHHgkBtnzcnG/83hVK6VaNqZkxkaoEssdmhW+8gSXy/wMTzFlFFlsjIEPhNrRdZ406GIqAEu8TJIAQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-30T05:06:05.616091Z","bundle_sha256":"baa530278f41b294d1643960b864a77adfd73f9b1b39c276d280050f58f4d22b"}}