{"paper":{"title":"Elemental cosmic ray spectra reveal two populations of Galactic sources and an immediate transition to an extragalactic component after the knee","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.HE","authors_text":"Anatoly A. Semenov, Timur A. Dzhatdoev","submitted_at":"2026-06-01T18:12:28Z","abstract_excerpt":"The energy spectra for individual elements and/or for groups of elements in cosmic rays (CR) in the energy range between 100 $\\times$ Z GeV and 10$^{3}$ $\\times$ Z PeV (where Z is the charge number of the nucleus) have a number of features, including two steepenings (\"knees\") with the rigidity-dependent energies $E_{k1} \\approx$ 15 $\\times$ Z TeV and $E_{k2} \\approx$ 3 $\\times$ Z PeV and three hardenings (\"ankles\") at $E_{a1} \\approx$ 500 $\\times$ Z GeV; for protons $E_{a2-p} \\approx$ 150 TeV and $E_{ a3-p} \\approx$ 100 PeV. While the values of $E_{a1}$ for different nuclei are rigidity-depend"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2606.02748","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/2606.02748/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"}