{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2008:TJ6JBI6WEXMNSMJANOEB7KDPIA","short_pith_number":"pith:TJ6JBI6W","canonical_record":{"source":{"id":"0801.2350","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"astro-ph","submitted_at":"2008-01-15T18:52:52Z","cross_cats_sorted":[],"title_canon_sha256":"79b2f7572fe1138fd0b8606ce5af492892fd07ed92065c567e88e28f54b29ca3","abstract_canon_sha256":"54770d2d8f012eeba03edfcff28e60c5dda31c6e6d217d46b921f87fea280c02"},"schema_version":"1.0"},"canonical_sha256":"9a7c90a3d625d8d931206b881fa86f40021a67b42baad4b59428e27ae9944d4b","source":{"kind":"arxiv","id":"0801.2350","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0801.2350","created_at":"2026-07-04T15:06:51Z"},{"alias_kind":"arxiv_version","alias_value":"0801.2350v1","created_at":"2026-07-04T15:06:51Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0801.2350","created_at":"2026-07-04T15:06:51Z"},{"alias_kind":"pith_short_12","alias_value":"TJ6JBI6WEXMN","created_at":"2026-07-04T15:06:51Z"},{"alias_kind":"pith_short_16","alias_value":"TJ6JBI6WEXMNSMJA","created_at":"2026-07-04T15:06:51Z"},{"alias_kind":"pith_short_8","alias_value":"TJ6JBI6W","created_at":"2026-07-04T15:06:51Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2008:TJ6JBI6WEXMNSMJANOEB7KDPIA","target":"record","payload":{"canonical_record":{"source":{"id":"0801.2350","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"astro-ph","submitted_at":"2008-01-15T18:52:52Z","cross_cats_sorted":[],"title_canon_sha256":"79b2f7572fe1138fd0b8606ce5af492892fd07ed92065c567e88e28f54b29ca3","abstract_canon_sha256":"54770d2d8f012eeba03edfcff28e60c5dda31c6e6d217d46b921f87fea280c02"},"schema_version":"1.0"},"canonical_sha256":"9a7c90a3d625d8d931206b881fa86f40021a67b42baad4b59428e27ae9944d4b","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-04T15:06:51.767974Z","signature_b64":"uv0EhWt1XlQEvzZKHI08IKGRWvfqt7eNlI15qj2M8j5ZNelqHXSB14zD2OFbGthsLh1de4KL8ZG9F1+IT+dCAQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"9a7c90a3d625d8d931206b881fa86f40021a67b42baad4b59428e27ae9944d4b","last_reissued_at":"2026-07-04T15:06:51.767532Z","signature_status":"signed_v1","first_computed_at":"2026-07-04T15:06:51.767532Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"0801.2350","source_version":1,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-04T15:06:51Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"9iiRHL28dHPMVa/ajZDlpSsG8kRXiHc9NS/2hOVFDKoB/dapwrGZqr6xVu4R7L83Be7ooKoGWXob2A0Oh4t0DA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-12T16:18:03.903634Z"},"content_sha256":"3c33fd33a262e11893ba3a314f721c3ae88be4672d44d93e9059072ccb9b54fb","schema_version":"1.0","event_id":"sha256:3c33fd33a262e11893ba3a314f721c3ae88be4672d44d93e9059072ccb9b54fb"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2008:TJ6JBI6WEXMNSMJANOEB7KDPIA","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Estimation of X-ray scattering impact in imaging degradation for the SIMBOL-X telescope","license":"","headline":"","cross_cats":[],"primary_cat":"astro-ph","authors_text":"D. Spiga, G. Pareschi, R. Canestrari, V. Cotroneo","submitted_at":"2008-01-15T18:52:52Z","abstract_excerpt":"The imaging performance of X-ray optics (expressed in terms of HEW, Half-Energy-Width) can be severely affected by X-ray scattering caused by the surface roughness of the mirrors. The impact of X-ray scattering has an increasing relevance for increasing photon energy, and can be the dominant problem in a hard X-ray telescope like SIMBOL-X. In this work we show how, by means of a novel formalism, we can derive a surface roughness tolerance - in terms of its power spectrum - from a specific HEW requirement for the SIMBOL-X optical module."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0801.2350","kind":"arxiv","version":1},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/0801.2350/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"references":{"count":0,"sample":[],"resolved_work":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","internal_anchors":0},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"},"verdict_id":null},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-04T15:06:51Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"dom+oF7/4NMTOV5UB5qTgyqNSYhtWD0SaPMdc9ZoZOoqxHwAuHQ/RCzyj7BM6A7LECHX7hqrJ9TBJGoeFP1/Ag==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-12T16:18:03.904139Z"},"content_sha256":"4d94942e17736b294655b5c0802c5e22c1ecc8fc5135aebf50802ea90730e312","schema_version":"1.0","event_id":"sha256:4d94942e17736b294655b5c0802c5e22c1ecc8fc5135aebf50802ea90730e312"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/TJ6JBI6WEXMNSMJANOEB7KDPIA/bundle.json","state_url":"https://pith.science/pith/TJ6JBI6WEXMNSMJANOEB7KDPIA/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/TJ6JBI6WEXMNSMJANOEB7KDPIA/bundle.json","status":"primary"}],"public_keys":[{"key_id":"pith-v1-2026-05","algorithm":"ed25519","format":"raw","public_key_b64":"stVStoiQhXFxp4s2pdzPNoqVNBMojDU/fJ2db5S3CbM=","public_key_hex":"b2d552b68890857171a78b36a5dccf368a953413288c353f7c9d9d6f94b709b3","fingerprint_sha256_b32_first128bits":"RVFV5Z2OI2J3ZUO7ERDEBCYNKS","fingerprint_sha256_hex":"8d4b5ee74e4693bcd1df2446408b0d54","rotates_at":null,"url":"https://pith.science/pith-signing-key.json","notes":"Pith uses this Ed25519 key to sign canonical record SHA-256 digests. Verify with: ed25519_verify(public_key, message=canonical_sha256_bytes, signature=base64decode(signature_b64))."}],"merge_version":"pith-open-graph-merge-v1","built_at":"2026-08-12T16:18:03Z","links":{"resolver":"https://pith.science/pith/TJ6JBI6WEXMNSMJANOEB7KDPIA","bundle":"https://pith.science/pith/TJ6JBI6WEXMNSMJANOEB7KDPIA/bundle.json","state":"https://pith.science/pith/TJ6JBI6WEXMNSMJANOEB7KDPIA/state.json","well_known_bundle":"https://pith.science/.well-known/pith/TJ6JBI6WEXMNSMJANOEB7KDPIA/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2008:TJ6JBI6WEXMNSMJANOEB7KDPIA","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":"54770d2d8f012eeba03edfcff28e60c5dda31c6e6d217d46b921f87fea280c02","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"2008-01-15T18:52:52Z","title_canon_sha256":"79b2f7572fe1138fd0b8606ce5af492892fd07ed92065c567e88e28f54b29ca3"},"schema_version":"1.0","source":{"id":"0801.2350","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0801.2350","created_at":"2026-07-04T15:06:51Z"},{"alias_kind":"arxiv_version","alias_value":"0801.2350v1","created_at":"2026-07-04T15:06:51Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0801.2350","created_at":"2026-07-04T15:06:51Z"},{"alias_kind":"pith_short_12","alias_value":"TJ6JBI6WEXMN","created_at":"2026-07-04T15:06:51Z"},{"alias_kind":"pith_short_16","alias_value":"TJ6JBI6WEXMNSMJA","created_at":"2026-07-04T15:06:51Z"},{"alias_kind":"pith_short_8","alias_value":"TJ6JBI6W","created_at":"2026-07-04T15:06:51Z"}],"graph_snapshots":[{"event_id":"sha256:4d94942e17736b294655b5c0802c5e22c1ecc8fc5135aebf50802ea90730e312","target":"graph","created_at":"2026-07-04T15:06:51Z","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/0801.2350/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"The imaging performance of X-ray optics (expressed in terms of HEW, Half-Energy-Width) can be severely affected by X-ray scattering caused by the surface roughness of the mirrors. The impact of X-ray scattering has an increasing relevance for increasing photon energy, and can be the dominant problem in a hard X-ray telescope like SIMBOL-X. In this work we show how, by means of a novel formalism, we can derive a surface roughness tolerance - in terms of its power spectrum - from a specific HEW requirement for the SIMBOL-X optical module.","authors_text":"D. Spiga, G. Pareschi, R. Canestrari, V. Cotroneo","cross_cats":[],"headline":"","license":"","primary_cat":"astro-ph","submitted_at":"2008-01-15T18:52:52Z","title":"Estimation of X-ray scattering impact in imaging degradation for the SIMBOL-X telescope"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0801.2350","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":"sha256:3c33fd33a262e11893ba3a314f721c3ae88be4672d44d93e9059072ccb9b54fb","target":"record","created_at":"2026-07-04T15:06:51Z","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":"54770d2d8f012eeba03edfcff28e60c5dda31c6e6d217d46b921f87fea280c02","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"2008-01-15T18:52:52Z","title_canon_sha256":"79b2f7572fe1138fd0b8606ce5af492892fd07ed92065c567e88e28f54b29ca3"},"schema_version":"1.0","source":{"id":"0801.2350","kind":"arxiv","version":1}},"canonical_sha256":"9a7c90a3d625d8d931206b881fa86f40021a67b42baad4b59428e27ae9944d4b","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"9a7c90a3d625d8d931206b881fa86f40021a67b42baad4b59428e27ae9944d4b","first_computed_at":"2026-07-04T15:06:51.767532Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-04T15:06:51.767532Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"uv0EhWt1XlQEvzZKHI08IKGRWvfqt7eNlI15qj2M8j5ZNelqHXSB14zD2OFbGthsLh1de4KL8ZG9F1+IT+dCAQ==","signature_status":"signed_v1","signed_at":"2026-07-04T15:06:51.767974Z","signed_message":"canonical_sha256_bytes"},"source_id":"0801.2350","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:3c33fd33a262e11893ba3a314f721c3ae88be4672d44d93e9059072ccb9b54fb","sha256:4d94942e17736b294655b5c0802c5e22c1ecc8fc5135aebf50802ea90730e312"],"state_sha256":"74ca97612eba8e0db4524a9aae29d9684afb8a835a1de7260817a71defc5b61b"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"IQ+n2kylN2R8zUJES2aUYGmgC8FOnqfXshUBsoUejhSu/0zBxrkZxiJ6+CJx8U4qJaXenr0c2l+VgqN2zealBQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-12T16:18:03.909595Z","bundle_sha256":"4be5fd3cafa2a9d7d81b28ad1177bf567192b0ee3991a6f9f523ae0904456efe"}}