{"schema":"pubphys.bundle/1","record":{"author":{"account_ref":null,"orcid":null},"builds_on":[],"content_schema":"pubphys.content.revision/1","content_sha256":"5823e8de2b3547051667249c11e59182ec5cfd0921137e446086c9b2889a9957","created":"2026-10-03T07:17:54Z","files":[],"origin":{"assisted_by":[],"kind":"seed"},"parents":["5475cf5dc5b1a72283d26dc95dc6e00d7ea4e00096a7c6492e409a1816eeb011"],"salt":"74a341d516308c787cb8f43072f7ed0a6cf2b9dd6d685af909c33694bf181822","schema":"pubphys.record/2","site":"pubphys.com","target":null,"type":"revision"},"content":{"answer_type":"yes-no","assisted_by":[],"external_id":"astro.cosmic-ray-origins.auger-ta-discrepancy","kind":"well-posed","literature_status":"contested","n":"1","parents":[],"plain":"The two largest cosmic-ray observatories, one in each hemisphere, disagree on how many particles arrive at the very highest energies.","posed_since":"","precise":"After cross-calibration of energy scales, the Telescope Array flux above $\\sim 3e19\\ \\mathrm{eV}$ and its suppression energy remain higher than those of the Pierre Auger Observatory. Determine whether the residual difference is instrumental (energy-scale nonlinearity, aperture, atmospheric corrections) or a real dependence on sky direction that would imply a nearby source in the northern sky. Answer: yes or no for a direction-dependent flux, with significance after systematics, evaluated in the declination band seen by both.","problem_ref":null,"references":"","settled_by":"Measurements in the common declination band with identical detector types at both sites, such as Auger-type surface stations operated at the Telescope Array site.","status_note":"","title":"Why do Auger and Telescope Array spectra differ above 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