{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2022:FJOCGW3RGULT2QGAMJI4OG2NFB","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":"8d17fb97372f257ee76056f42d7f9b7cf70154ca2e4708e5ca23c3433f0a20c4","cross_cats_sorted":["astro-ph.HE"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.IM","submitted_at":"2022-05-02T18:00:08Z","title_canon_sha256":"9cdc562cb5cbc63da8761269f2490cb343430b3e66bd0ae05591fce51dfc0be5"},"schema_version":"1.0","source":{"id":"2205.01126","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2205.01126","created_at":"2026-07-05T04:45:20Z"},{"alias_kind":"arxiv_version","alias_value":"2205.01126v1","created_at":"2026-07-05T04:45:20Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2205.01126","created_at":"2026-07-05T04:45:20Z"},{"alias_kind":"pith_short_12","alias_value":"FJOCGW3RGULT","created_at":"2026-07-05T04:45:20Z"},{"alias_kind":"pith_short_16","alias_value":"FJOCGW3RGULT2QGA","created_at":"2026-07-05T04:45:20Z"},{"alias_kind":"pith_short_8","alias_value":"FJOCGW3R","created_at":"2026-07-05T04:45:20Z"}],"graph_snapshots":[{"event_id":"sha256:3d1dffe3b0d3311c76c3c904cdd11154596667568e004bc197c378888147fcd5","target":"graph","created_at":"2026-07-05T04:45:20Z","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/2205.01126/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"The X-ray Integral Field Unit (X-IFU) is the high resolution X-ray spectrometer of ESA's Athena X-ray observatory. It will deliver X-ray data in the 0.2-12 keV band with an unprecedented spectral resolution of 2.5 eV up to 7 keV. During the observation of very bright X-ray sources, the X-IFU detectors will receive high photon rates. The count rate capability of the X-IFU will be improved by using the defocusing option, which will enable the observations of extremely bright sources with fluxes up to $\\simeq 1$ Crab. In the defocused mode, the point spread function (PSF) of the telescope will be","authors_text":"D. Barret, E. S. Kammoun, J. M. Miller, J. Wilms, M. Guainazzi, P. Peille, R. Willingale, T. Dauser","cross_cats":["astro-ph.HE"],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.IM","submitted_at":"2022-05-02T18:00:08Z","title":"The defocused observations of bright sources with Athena/X-IFU"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2205.01126","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":"sha256:09a18e527e9ca21abafd5c730b31cbcfb13158d43927c81717cb33eef11b807b","target":"record","created_at":"2026-07-05T04:45:20Z","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":"8d17fb97372f257ee76056f42d7f9b7cf70154ca2e4708e5ca23c3433f0a20c4","cross_cats_sorted":["astro-ph.HE"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.IM","submitted_at":"2022-05-02T18:00:08Z","title_canon_sha256":"9cdc562cb5cbc63da8761269f2490cb343430b3e66bd0ae05591fce51dfc0be5"},"schema_version":"1.0","source":{"id":"2205.01126","kind":"arxiv","version":1}},"canonical_sha256":"2a5c235b7135173d40c06251c71b4d284852d9fc5a3590447d0d6dd83538f53e","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"2a5c235b7135173d40c06251c71b4d284852d9fc5a3590447d0d6dd83538f53e","first_computed_at":"2026-07-05T04:45:20.532393Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T04:45:20.532393Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"dSNjcYGSlgc5gLCoVV1xOvfRABsSxKNPIKYHkMzBW2W8WeJX8mtuslZu/C8UbsgFvfZTMrKfWqxHFoTyb6KtDQ==","signature_status":"signed_v1","signed_at":"2026-07-05T04:45:20.532914Z","signed_message":"canonical_sha256_bytes"},"source_id":"2205.01126","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:09a18e527e9ca21abafd5c730b31cbcfb13158d43927c81717cb33eef11b807b","sha256:3d1dffe3b0d3311c76c3c904cdd11154596667568e004bc197c378888147fcd5"],"state_sha256":"96f9973ac21a9d3195ab550a823d13e4d090960d11940c49d77ee019dc69eeef"}