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The total number of events with energies >10^20 eV published by both experiments is six. I estimate the statistical significance of the doublet, which is rather weak, and point out that the arrival directions of events in the doublet coincide with the Galactic X-ray source Aql "},"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":"1205.6435","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2012-05-29T17:45:53Z","cross_cats_sorted":[],"title_canon_sha256":"33ddc0c86c91463df89ca5865b27bd4c9cdf5e525cdd2245d721e48e094c8e06","abstract_canon_sha256":"0b8ba29f03fcefc418123a1fbed4d7a351050d9a3e6e03f42fd8102b4f10b6b2"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T03:45:55.208010Z","signature_b64":"bCits13UuYEr1w+W+JZpmme5FeV8gnGRH0Ic5/A3s2yyyXEcXOiojJwbCC6dG7nV074o3Og5uItvfA9lKfuoAg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"b9cafad571bde2532430a3fe1afe0db32f8d451ecba0e9ee3c85cc3f225ceaee","last_reissued_at":"2026-05-18T03:45:55.207008Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T03:45:55.207008Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"A doublet of cosmic-ray events with primary energies >10^20 eV","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.HE","authors_text":"S. 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