{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:JVCUVQPPHVJC6GEP7ATYDY277X","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":"13b5697c034ddb88e1e22e9013cdbc642c695f76dbfba3fed49bb9995c15157f","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2018-09-05T22:51:26Z","title_canon_sha256":"82f66bbfa19df9c66ab9f2be417c18b1257936cda6784386c12ec3b1f9b411bb"},"schema_version":"1.0","source":{"id":"1809.01757","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1809.01757","created_at":"2026-05-18T00:00:50Z"},{"alias_kind":"arxiv_version","alias_value":"1809.01757v1","created_at":"2026-05-18T00:00:50Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1809.01757","created_at":"2026-05-18T00:00:50Z"},{"alias_kind":"pith_short_12","alias_value":"JVCUVQPPHVJC","created_at":"2026-05-18T12:32:31Z"},{"alias_kind":"pith_short_16","alias_value":"JVCUVQPPHVJC6GEP","created_at":"2026-05-18T12:32:31Z"},{"alias_kind":"pith_short_8","alias_value":"JVCUVQPP","created_at":"2026-05-18T12:32:31Z"}],"graph_snapshots":[{"event_id":"sha256:e5c2dc1ea19c255c323cddbef98749144ae7cb9bed9d2db3d053f4fbb3f605fb","target":"graph","created_at":"2026-05-18T00:00:50Z","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 NuSTAR observatory, with its high sensitivity in hard X-rays, has enabled detailed broadband modeling of the X-ray spectra of Active Galactic Nuclei (AGN), thereby allowing constraints to be placed on the high-energy cutoff of the X-ray coronal continuum. We investigate the spectral properties of a sample of 46 NuSTAR-observed Seyfert 1 AGN selected from the Swift/BAT 70-month hard X-ray survey. Our measurements of the high-energy cutoff of the continuum from modeling the NuSTAR X-ray spectra are used to map out the temperature - compactness ($\\theta-l$) plane for AGN coronae. We find that","authors_text":"Anne Lohfink, Fiona Harrison, Mislav Balokovi\\'c, Murray Brightman, Nikita Kamraj","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2018-09-05T22:51:26Z","title":"Coronal properties of Swift/BAT-selected Seyfert 1 AGN observed with NuSTAR"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1809.01757","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:ccd64cedb3c6028c5eb3d5a6e67a9894f02c0879f7491364ba90cd1e8e538608","target":"record","created_at":"2026-05-18T00:00:50Z","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":"13b5697c034ddb88e1e22e9013cdbc642c695f76dbfba3fed49bb9995c15157f","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2018-09-05T22:51:26Z","title_canon_sha256":"82f66bbfa19df9c66ab9f2be417c18b1257936cda6784386c12ec3b1f9b411bb"},"schema_version":"1.0","source":{"id":"1809.01757","kind":"arxiv","version":1}},"canonical_sha256":"4d454ac1ef3d522f188ff82781e35ffdcd3edd8bc9dd7f0d9aedd7040d815836","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"4d454ac1ef3d522f188ff82781e35ffdcd3edd8bc9dd7f0d9aedd7040d815836","first_computed_at":"2026-05-18T00:00:50.500217Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:00:50.500217Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"D5fwfc8T2NZAX45IuJnozYFTi8dhsRkFqL6QeXz04jUYNhnghQF9kl7WwANvhQBDJnOZGnzMqlMQV07Z/nfeAg==","signature_status":"signed_v1","signed_at":"2026-05-18T00:00:50.500838Z","signed_message":"canonical_sha256_bytes"},"source_id":"1809.01757","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:ccd64cedb3c6028c5eb3d5a6e67a9894f02c0879f7491364ba90cd1e8e538608","sha256:e5c2dc1ea19c255c323cddbef98749144ae7cb9bed9d2db3d053f4fbb3f605fb"],"state_sha256":"2eeb6a111f4fd37a790fa55dfa3b38d606aee1c72f5e011ac86a63b9e1e22d5d"}