The TeV Cosmic-Ray Anisotropy from Local Dark Matter Annihilation

Abstract

Several experiments have reported regions in the TeV sky with an excess of cosmic rays. Here we consider the possibility that the excess cosmic rays are coming from dark matter annihilation in nearby subhalos. We provide motivation for dark matter as the source of the excess and show that dark matter annihilations can naturally produce the cosmic ray anisotropy without the need for exotic dark matter models. We show that viable dark matter explanations of the cosmic ray excess are consistent with current measurements of antiprotons, positrons, and gamma-rays. Additionally, we show that the dark matter interpretation of the observed anisotropy predicts detections in several cosmic ray channels by the next generation of experiments.

5 pages, 4 figures

Cited by in corpus (5)

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• Explaining TeV Cosmic-Ray Anisotropies with Non-Diffusive Cosmic-Ray Propagation
• Cosmic Ray transport in mixed magnetic fields and their role on the observed anisotropies
• Observation of Anisotropy in the Arrival Direction Distribution of TeV Cosmic Rays with HAWC
• A search for small and medium scale anisotropy of cosmic rays above 1 PeV registered at the Tunka-133 array