{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:1999:DKLSLS5VGDHUEV77D7TZDGQLDY","short_pith_number":"pith:DKLSLS5V","schema_version":"1.0","canonical_sha256":"1a9725cbb530cf4257ff1fe7919a0b1e0b6651b45df82ab4fd82e61d674bb581","source":{"kind":"arxiv","id":"astro-ph/9908193","version":1},"attestation_state":"computed","paper":{"title":"Cluster Analysis of Extremely High Energy Cosmic Rays in the Northern Sky","license":"","headline":"","cross_cats":[],"primary_cat":"astro-ph","authors_text":"A.A.Watson, J.Lloyd-Evans, M.Nagano, M.Takeda, M.Teshima, Y.Uchihori","submitted_at":"1999-08-18T07:27:01Z","abstract_excerpt":"The arrival directions of extremely high energy cosmic rays (EHECR) above $4\\times10^{19}$ eV, observed by four surface array experiments in the northern hemisphere,are examined for coincidences from similar directions in the sky. The total number of cosmic rays is 92.A significant number of double coincidences (doublet) and triple coincidences (triplet) are observed on the supergalactic plane within the experimental angular resolution. The chance probability of such multiplets from a uniform distribution is less than 1 % if we consider a restricted region within $\\pm 10^{\\circ}$ of the superg"},"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":"astro-ph/9908193","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"astro-ph","submitted_at":"1999-08-18T07:27:01Z","cross_cats_sorted":[],"title_canon_sha256":"d7689b6a7d616b288ac6bde884e3845a5233ab58a0aa903a3a86a426cca7d7c5","abstract_canon_sha256":"ae3bf9ff6e10ec16a95859b990fd8dc99f9ecb5f5c0b4c0bd7eb7de884c303b8"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:07:36.167608Z","signature_b64":"9grvjCn/dvw2CFW7pEnElOdG727F5tsmOomAM26N2BgRlPjJzAmAIDLb1cC/vgIq0UPAZRqCCe3SkqUZz89HCA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"1a9725cbb530cf4257ff1fe7919a0b1e0b6651b45df82ab4fd82e61d674bb581","last_reissued_at":"2026-05-18T01:07:36.166991Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:07:36.166991Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Cluster Analysis of Extremely High Energy Cosmic Rays in the Northern Sky","license":"","headline":"","cross_cats":[],"primary_cat":"astro-ph","authors_text":"A.A.Watson, J.Lloyd-Evans, M.Nagano, M.Takeda, M.Teshima, Y.Uchihori","submitted_at":"1999-08-18T07:27:01Z","abstract_excerpt":"The arrival directions of extremely high energy cosmic rays (EHECR) above $4\\times10^{19}$ eV, observed by four surface array experiments in the northern hemisphere,are examined for coincidences from similar directions in the sky. The total number of cosmic rays is 92.A significant number of double coincidences (doublet) and triple coincidences (triplet) are observed on the supergalactic plane within the experimental angular resolution. The chance probability of such multiplets from a uniform distribution is less than 1 % if we consider a restricted region within $\\pm 10^{\\circ}$ of the superg"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/9908193","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":"astro-ph/9908193","created_at":"2026-05-18T01:07:36.167079+00:00"},{"alias_kind":"arxiv_version","alias_value":"astro-ph/9908193v1","created_at":"2026-05-18T01:07:36.167079+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.astro-ph/9908193","created_at":"2026-05-18T01:07:36.167079+00:00"},{"alias_kind":"pith_short_12","alias_value":"DKLSLS5VGDHU","created_at":"2026-05-18T12:25:49.038998+00:00"},{"alias_kind":"pith_short_16","alias_value":"DKLSLS5VGDHUEV77","created_at":"2026-05-18T12:25:49.038998+00:00"},{"alias_kind":"pith_short_8","alias_value":"DKLSLS5V","created_at":"2026-05-18T12:25:49.038998+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/DKLSLS5VGDHUEV77D7TZDGQLDY","json":"https://pith.science/pith/DKLSLS5VGDHUEV77D7TZDGQLDY.json","graph_json":"https://pith.science/api/pith-number/DKLSLS5VGDHUEV77D7TZDGQLDY/graph.json","events_json":"https://pith.science/api/pith-number/DKLSLS5VGDHUEV77D7TZDGQLDY/events.json","paper":"https://pith.science/paper/DKLSLS5V"},"agent_actions":{"view_html":"https://pith.science/pith/DKLSLS5VGDHUEV77D7TZDGQLDY","download_json":"https://pith.science/pith/DKLSLS5VGDHUEV77D7TZDGQLDY.json","view_paper":"https://pith.science/paper/DKLSLS5V","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=astro-ph/9908193&json=true","fetch_graph":"https://pith.science/api/pith-number/DKLSLS5VGDHUEV77D7TZDGQLDY/graph.json","fetch_events":"https://pith.science/api/pith-number/DKLSLS5VGDHUEV77D7TZDGQLDY/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/DKLSLS5VGDHUEV77D7TZDGQLDY/action/timestamp_anchor","attest_storage":"https://pith.science/pith/DKLSLS5VGDHUEV77D7TZDGQLDY/action/storage_attestation","attest_author":"https://pith.science/pith/DKLSLS5VGDHUEV77D7TZDGQLDY/action/author_attestation","sign_citation":"https://pith.science/pith/DKLSLS5VGDHUEV77D7TZDGQLDY/action/citation_signature","submit_replication":"https://pith.science/pith/DKLSLS5VGDHUEV77D7TZDGQLDY/action/replication_record"}},"created_at":"2026-05-18T01:07:36.167079+00:00","updated_at":"2026-05-18T01:07:36.167079+00:00"}