{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2023:OT37CCXLB7VDUCSHDWVSWFRKP2","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":"4d0fa40a48868602cd71da7803d2dc599d702afb9f80b895cd693e13c1c256d1","cross_cats_sorted":["astro-ph.SR"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2023-03-13T15:58:46Z","title_canon_sha256":"41dc425175a2ab533f8968e046f149b427c123d26b77da8cee0b56bcef64294c"},"schema_version":"1.0","source":{"id":"2303.07225","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2303.07225","created_at":"2026-07-05T05:52:28Z"},{"alias_kind":"arxiv_version","alias_value":"2303.07225v1","created_at":"2026-07-05T05:52:28Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2303.07225","created_at":"2026-07-05T05:52:28Z"},{"alias_kind":"pith_short_12","alias_value":"OT37CCXLB7VD","created_at":"2026-07-05T05:52:28Z"},{"alias_kind":"pith_short_16","alias_value":"OT37CCXLB7VDUCSH","created_at":"2026-07-05T05:52:28Z"},{"alias_kind":"pith_short_8","alias_value":"OT37CCXL","created_at":"2026-07-05T05:52:28Z"}],"graph_snapshots":[{"event_id":"sha256:8caae85148c174820defacf20e68ee4051df232d2e6a82e65e6d785697dfcc75","target":"graph","created_at":"2026-07-05T05:52:28Z","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/2303.07225/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We report comprehensive spectral and temporal properties of the Be/X-ray binary pulsar SMC X-2 using X-ray observations during the 2015 and 2022 outbursts. The pulse profile of the pulsar is unique and strongly luminosity dependent. It evolves from a broad-humped into a double-peaked profile above luminosity 3$\\times$10$^{38}$ ergs s$^{-1}$. The pulse fraction of the pulsar is found to be a linear function of luminosity as well as energy. We also studied the spectral evolution of the source during the latest 2022 outburst with NICER. The observed photon index shows a negative and positive corr","authors_text":"A. Sanna, B. Chhotaray, C. Maitra, C. Malacaria, G. K. Jaisawal, G. Vasilopoulos, K. C. Gendreau, M. Ng, S. Guillot, S. Naik","cross_cats":["astro-ph.SR"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2023-03-13T15:58:46Z","title":"On the cyclotron absorption line and evidence of the spectral transition in SMC X-2 during 2022 giant outburst"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2303.07225","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:a11ceba0a1d6e2eb25fff4f3bba5fa4cdb9f09d830fa962ea3c14660f1e352c1","target":"record","created_at":"2026-07-05T05:52:28Z","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":"4d0fa40a48868602cd71da7803d2dc599d702afb9f80b895cd693e13c1c256d1","cross_cats_sorted":["astro-ph.SR"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2023-03-13T15:58:46Z","title_canon_sha256":"41dc425175a2ab533f8968e046f149b427c123d26b77da8cee0b56bcef64294c"},"schema_version":"1.0","source":{"id":"2303.07225","kind":"arxiv","version":1}},"canonical_sha256":"74f7f10aeb0fea3a0a471dab2b162a7eb8ecbeef7750a7bba260c52b7778b0e4","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"74f7f10aeb0fea3a0a471dab2b162a7eb8ecbeef7750a7bba260c52b7778b0e4","first_computed_at":"2026-07-05T05:52:28.029233Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T05:52:28.029233Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"/+3czX2zdA0y7YXqkk0NW+3l6u+CrmaE39mH6Ort8KruqRUKyXKphuymCnsXv/gTrmBLCwGSZycRSbAaPqC7Bw==","signature_status":"signed_v1","signed_at":"2026-07-05T05:52:28.029698Z","signed_message":"canonical_sha256_bytes"},"source_id":"2303.07225","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:a11ceba0a1d6e2eb25fff4f3bba5fa4cdb9f09d830fa962ea3c14660f1e352c1","sha256:8caae85148c174820defacf20e68ee4051df232d2e6a82e65e6d785697dfcc75"],"state_sha256":"8106bb21fadb29e540e1ae3580e3bcf72d6213b67c51bdc3bc785b2624fc909d"}