The Dipole Anisotropy of Galactic Cosmic Rays

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The arrival directions of Galactic cosmic rays exhibit anisotropies up to the level of one per-mille over various angular scales. Recent observations of TeV-PeV cosmic rays show that the dipole anisotropy has a strong energy dependence with a phase-flip around 100 TeV. We argue that this behavior can be well understood by the combination of various effects: the anisotropic diffusion of cosmic rays, the presence of nearby sources, the Compton-Getting effect from our relative motion and the reconstruction bias of ground-based observatories.
Original languageEnglish
Article number012004
JournalJournal of Physics
Issue numberConference 1
Number of pages11
Publication statusPublished - 10 Mar 2019

Bibliographical note

10 pages, 4 figures, Proceedings of the 26th Extended European Cosmic Ray Symposium 2018

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