{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2018:GPOGUM6YWXA5NEMRZOBWLBY3DE","short_pith_number":"pith:GPOGUM6Y","schema_version":"1.0","canonical_sha256":"33dc6a33d8b5c1d69191cb8365871b1932432987655890ad5f8683956a4d63f4","source":{"kind":"arxiv","id":"1801.01391","version":1},"attestation_state":"computed","paper":{"title":"Correlation methods for the analysis of X-ray polarimetric signals","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.IM","authors_text":"Enrico Costa, Enrico Massaro, Ettore Del Monte, Fabio Muleri, Paolo Soffitta, Riccardo Campana, Sergio Fabiani","submitted_at":"2018-01-04T15:07:04Z","abstract_excerpt":"X-ray polarimetric measurements are based on studying the distribution of the directions of scattered photons or photoelectrons and on the search of a sinusoidal modulation with a period of {\\pi}. We developed two tools for investigating these angular distributions based on the correlations between counts in phase bins separated by fixed phase distances. In one case we use the correlation between data separated by half of the bin number (one period) which is expected to give a linear pattern. In the other case, the scatter plot obtained by shifting by 1/8 of the bin number (1/4 of period) tran"},"verification_status":{"content_addressed":true,"pith_receipt":true,"author_attested":false,"weak_author_claims":0,"strong_author_claims":0,"externally_anchored":false,"storage_verified":false,"citation_signatures":0,"replication_records":0,"graph_snapshot":true,"references_resolved":false,"formal_links_present":false},"canonical_record":{"source":{"id":"1801.01391","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2018-01-04T15:07:04Z","cross_cats_sorted":[],"title_canon_sha256":"4ba4f76490500197530de7cd9bcb5cf153a308458847a7d267d281bb7bde4a8d","abstract_canon_sha256":"d1bc8b52511a77adccc07b5ff1dd4bfce060867d1a3f13ba54f4f5980682c5c5"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:26:42.262291Z","signature_b64":"HRHBjTQIxTxJWKOjbLzm/mwnDtIuHNM5jXY5x3tZidpjnIRsp8O/6+bxPP5SPjh3fp+wvaxr5Me2Zz1wFbH1Dg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"33dc6a33d8b5c1d69191cb8365871b1932432987655890ad5f8683956a4d63f4","last_reissued_at":"2026-05-18T00:26:42.261680Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:26:42.261680Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Correlation methods for the analysis of X-ray polarimetric signals","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.IM","authors_text":"Enrico Costa, Enrico Massaro, Ettore Del Monte, Fabio Muleri, Paolo Soffitta, Riccardo Campana, Sergio Fabiani","submitted_at":"2018-01-04T15:07:04Z","abstract_excerpt":"X-ray polarimetric measurements are based on studying the distribution of the directions of scattered photons or photoelectrons and on the search of a sinusoidal modulation with a period of {\\pi}. We developed two tools for investigating these angular distributions based on the correlations between counts in phase bins separated by fixed phase distances. In one case we use the correlation between data separated by half of the bin number (one period) which is expected to give a linear pattern. In the other case, the scatter plot obtained by shifting by 1/8 of the bin number (1/4 of period) tran"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1801.01391","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":""},"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"},"aliases":[{"alias_kind":"arxiv","alias_value":"1801.01391","created_at":"2026-05-18T00:26:42.261776+00:00"},{"alias_kind":"arxiv_version","alias_value":"1801.01391v1","created_at":"2026-05-18T00:26:42.261776+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1801.01391","created_at":"2026-05-18T00:26:42.261776+00:00"},{"alias_kind":"pith_short_12","alias_value":"GPOGUM6YWXA5","created_at":"2026-05-18T12:32:25.280505+00:00"},{"alias_kind":"pith_short_16","alias_value":"GPOGUM6YWXA5NEMR","created_at":"2026-05-18T12:32:25.280505+00:00"},{"alias_kind":"pith_short_8","alias_value":"GPOGUM6Y","created_at":"2026-05-18T12:32:25.280505+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":0,"internal_anchor_count":0,"sample":[]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/GPOGUM6YWXA5NEMRZOBWLBY3DE","json":"https://pith.science/pith/GPOGUM6YWXA5NEMRZOBWLBY3DE.json","graph_json":"https://pith.science/api/pith-number/GPOGUM6YWXA5NEMRZOBWLBY3DE/graph.json","events_json":"https://pith.science/api/pith-number/GPOGUM6YWXA5NEMRZOBWLBY3DE/events.json","paper":"https://pith.science/paper/GPOGUM6Y"},"agent_actions":{"view_html":"https://pith.science/pith/GPOGUM6YWXA5NEMRZOBWLBY3DE","download_json":"https://pith.science/pith/GPOGUM6YWXA5NEMRZOBWLBY3DE.json","view_paper":"https://pith.science/paper/GPOGUM6Y","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1801.01391&json=true","fetch_graph":"https://pith.science/api/pith-number/GPOGUM6YWXA5NEMRZOBWLBY3DE/graph.json","fetch_events":"https://pith.science/api/pith-number/GPOGUM6YWXA5NEMRZOBWLBY3DE/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/GPOGUM6YWXA5NEMRZOBWLBY3DE/action/timestamp_anchor","attest_storage":"https://pith.science/pith/GPOGUM6YWXA5NEMRZOBWLBY3DE/action/storage_attestation","attest_author":"https://pith.science/pith/GPOGUM6YWXA5NEMRZOBWLBY3DE/action/author_attestation","sign_citation":"https://pith.science/pith/GPOGUM6YWXA5NEMRZOBWLBY3DE/action/citation_signature","submit_replication":"https://pith.science/pith/GPOGUM6YWXA5NEMRZOBWLBY3DE/action/replication_record"}},"created_at":"2026-05-18T00:26:42.261776+00:00","updated_at":"2026-05-18T00:26:42.261776+00:00"}