{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:ZF5DJYHTMY6ZZCEDKOCTPLLTKE","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":"1106b69b6943b2f55b9b5010b5d6705df850eff723202d1f1650ff18d7870915","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2018-11-02T15:43:28Z","title_canon_sha256":"bdee57e21e3955385dabb3e0c991385d943bdfe8debddb7acdf490f86e36226f"},"schema_version":"1.0","source":{"id":"1811.00940","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1811.00940","created_at":"2026-05-18T00:00:46Z"},{"alias_kind":"arxiv_version","alias_value":"1811.00940v1","created_at":"2026-05-18T00:00:46Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1811.00940","created_at":"2026-05-18T00:00:46Z"},{"alias_kind":"pith_short_12","alias_value":"ZF5DJYHTMY6Z","created_at":"2026-05-18T12:33:07Z"},{"alias_kind":"pith_short_16","alias_value":"ZF5DJYHTMY6ZZCED","created_at":"2026-05-18T12:33:07Z"},{"alias_kind":"pith_short_8","alias_value":"ZF5DJYHT","created_at":"2026-05-18T12:33:07Z"}],"graph_snapshots":[{"event_id":"sha256:46dbca17b3957e7f28bc1fc681cb8923801e4d60b50eb7b8989a3855d6c024a3","target":"graph","created_at":"2026-05-18T00:00:46Z","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":"The first discovered accreting millisecond pulsar, SAX J1808.4-3658, went into X-ray outburst in April 2015. We triggered a 100 ks XMM-Newton ToO, taken at the peak of the outburst, and a 55 ks NuSTAR ToO, performed four days apart. We report here the results of a detailed spectral analysis of both the XMM-Newton and NuSTAR spectra. While the XMM-Newton spectrum appears much softer than in previous observations, the NuSTAR spectrum confirms the results obtained with XMM-Newton during the 2008 outburst. We find clear evidence of a broad iron line that we interpret as produced by reflection from","authors_text":"A. F. Gambino, A. Papitto, A. Riggio, A. Sanna, L. Burderi, R. Iaria, T. Di Salvo","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2018-11-02T15:43:28Z","title":"NuSTAR and XMM-Newton broad-band spectrum of SAX J1808.4-3658 during its latest outburst in 2015"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1811.00940","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":"sha256:609492f2b10700c3d6b679b508bf7a13ea3c991287590eb2f07946d16f628962","target":"record","created_at":"2026-05-18T00:00:46Z","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":"1106b69b6943b2f55b9b5010b5d6705df850eff723202d1f1650ff18d7870915","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2018-11-02T15:43:28Z","title_canon_sha256":"bdee57e21e3955385dabb3e0c991385d943bdfe8debddb7acdf490f86e36226f"},"schema_version":"1.0","source":{"id":"1811.00940","kind":"arxiv","version":1}},"canonical_sha256":"c97a34e0f3663d9c8883538537ad7351244bb2648945ab49f990709dd88af9e3","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"c97a34e0f3663d9c8883538537ad7351244bb2648945ab49f990709dd88af9e3","first_computed_at":"2026-05-18T00:00:46.978035Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:00:46.978035Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"+mSh4s/Wc/iC0CbmUpnH3nwG7dA/7JyueTEXY2zygfnm6AmO5QGj8iQfbiRHGLNhNsB/jPuvsQ/ZoBcyLMctBw==","signature_status":"signed_v1","signed_at":"2026-05-18T00:00:46.978438Z","signed_message":"canonical_sha256_bytes"},"source_id":"1811.00940","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:609492f2b10700c3d6b679b508bf7a13ea3c991287590eb2f07946d16f628962","sha256:46dbca17b3957e7f28bc1fc681cb8923801e4d60b50eb7b8989a3855d6c024a3"],"state_sha256":"57bee35cec3a00d3f3044d0d0e09e7d0192e0ec610a44e4b27a74a96421ca3e0"}