{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:TAECWOLPG3RYHKFK6FUY4EP46E","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":"29aab6d35ecd8ec592f127cd337289cac56d7bf8fabd7c51473413323c2d72f2","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2018-08-28T17:45:13Z","title_canon_sha256":"95e56ed6cb5eb3a1ef69e6d96dbe8054155965af0baf2a1bbf32683a0997a1d9"},"schema_version":"1.0","source":{"id":"1808.09431","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1808.09431","created_at":"2026-05-18T00:01:57Z"},{"alias_kind":"arxiv_version","alias_value":"1808.09431v1","created_at":"2026-05-18T00:01:57Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1808.09431","created_at":"2026-05-18T00:01:57Z"},{"alias_kind":"pith_short_12","alias_value":"TAECWOLPG3RY","created_at":"2026-05-18T12:32:53Z"},{"alias_kind":"pith_short_16","alias_value":"TAECWOLPG3RYHKFK","created_at":"2026-05-18T12:32:53Z"},{"alias_kind":"pith_short_8","alias_value":"TAECWOLP","created_at":"2026-05-18T12:32:53Z"}],"graph_snapshots":[{"event_id":"sha256:bf4cc7fedb351166ca9c1e9e21a8698bbfaf2ae90ae21920af3b2794a7251b8b","target":"graph","created_at":"2026-05-18T00:01:57Z","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":"Both the interplanetary space and the Earth magnetosphere are populated by low energy ($\\leq300$ keV) protons that are potentially able to scatter on the reflecting surface of Wolter-I optics of X-ray focusing telescopes and reach the focal plane. This phenomenon, depending on the X-ray instrumentation, can dramatically increase the background level, reducing the sensitivity or, in the most extreme cases, compromising the observation itself. The use of a magnetic diverter, deflecting protons away from the field of view, requires a detailed characterization of their angular and energy distribut","authors_text":"Andrea Bulgarelli, Andreas von Kienlin, Arne Rau, Claudio Macculi, Luigi Piro, Marco Barbera, Massimo Cappi, Mauro Dadina, Norbert Meidinger, Silvano Molendi, Simone Lotti, Teresa Mineo, Valentina Fioretti","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2018-08-28T17:45:13Z","title":"Magnetic shielding of soft protons in future X-ray telescopes: the case of the ATHENA Wide Field Imager"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1808.09431","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:b9b563b70235b90679b104fcc99aa0d4eb9cea234fd9094ee6c2a9a16f41c6b9","target":"record","created_at":"2026-05-18T00:01:57Z","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":"29aab6d35ecd8ec592f127cd337289cac56d7bf8fabd7c51473413323c2d72f2","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2018-08-28T17:45:13Z","title_canon_sha256":"95e56ed6cb5eb3a1ef69e6d96dbe8054155965af0baf2a1bbf32683a0997a1d9"},"schema_version":"1.0","source":{"id":"1808.09431","kind":"arxiv","version":1}},"canonical_sha256":"98082b396f36e383a8aaf1698e11fcf1206fe4620f381c3c02d6d938eebe5548","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"98082b396f36e383a8aaf1698e11fcf1206fe4620f381c3c02d6d938eebe5548","first_computed_at":"2026-05-18T00:01:57.981695Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:01:57.981695Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"iOz0z1uGeLu5F2Csct0OMepZSPdrJiAabrIqc0LpSaOly9pborvJu+D3eI1YuvCUAmk015dIBZb77VyJ0n0UCg==","signature_status":"signed_v1","signed_at":"2026-05-18T00:01:57.982124Z","signed_message":"canonical_sha256_bytes"},"source_id":"1808.09431","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:b9b563b70235b90679b104fcc99aa0d4eb9cea234fd9094ee6c2a9a16f41c6b9","sha256:bf4cc7fedb351166ca9c1e9e21a8698bbfaf2ae90ae21920af3b2794a7251b8b"],"state_sha256":"e1baf21c276ade109aee4701d7fc29118d5e52af73a6efd7eadd54049f916e04"}