{"paper":{"title":"IceCube constraints on the Fermi Bubbles","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.HE","authors_text":"Ilya Gurwich, Nimrod Sherf, Uri Keshet","submitted_at":"2017-05-18T15:59:30Z","abstract_excerpt":"We analyze the IceCube four-year neutrino data in search of a signal from the Fermi bubbles. No signal is found from the bubbles or from their dense shell, even when taking into account the softer background. This imposes a conservative $\\xi_i<8\\%$ upper limit on the cosmic-ray ion (CRI) acceleration efficiency, and an $\\eta\\equiv \\xi_e/\\xi_i \\gtrsim0.006$ lower limit on the electron-to-ion ratio of acceleration efficiencies (at the $2\\sigma$ confidence level). For typical $\\xi_i$, a signal should surface once the number of IceCube neutrinos increases by $\\sim$an order of magnitude, unless the"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1705.06665","kind":"arxiv","version":2},"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"}